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Reviewed on May 29, 2019 , Ian Cumming, Yannick Khong

LG SM8600
TV REVIEW

Usage Ratings - Version 1.3

Test Benches:

  • 1.3: Spring 2019
  • 1.2: Winter 2018
  • 1.1: Summer 2017
  • 1.0: Winter 2015
  • 0.9: Winter 2014
  • 0.8: Winter 2013
7.7
Mixed Usage
What it is: General purpose. The TV will be used for a variety of content and usages. Movies at night, TV shows during the day, video games from time to time, etc.
Score components:
Value for price beaten by
What it is: Product with the best value in this price range
Other best choice in a cheaper price range
Other best choice in a pricier price range
Automatically updated every hour based on the scores and prices of all other products we've tested.
: Vizio P Series 2018
6.5
Movies
What it is: Movies in the dark. The TV will be used for watching movies in a controlled environment, directly in front, in a home theater way. Mostly only high quality content, like Blu-rays, UHD Blu-rays, streaming and a little bit of HDR.
Score components:
8.0
TV Shows
What it is: TV Shows in a bright living room. The TV will be used in to watch TV shows, in a bright room during the day, from multiple viewing positions at different angles. The content watched has an average quality: cable, streaming, SD channels, etc.
Score components:
8.0
Sports
What it is: Sports in a living room. The TV will be used to watch sports during the day, like football or hockey. Usually watched with a group, so from multiple viewing position.
8.6
Video Games
What it is: Video games. The TV will be used to play video games, directly in front, in a controlled light environment. Usually fast games, like online FPS, where motion blur and input lag is important.
6.5
HDR Movies
What it is: HDR Movies and TV shows. The TV will be used to watch 4k UHD HDR content, with a wide color gamut and a high peak brightness. Either via UHD Blu-rays or HDR streaming.
Score components:
8.0
HDR Gaming
What it is: HDR Gaming. The TV will be used to play HDR video games using consoles that support it or on current generation gaming PCs. Xbox One S, PS4 Pro, GTX 10 series and AMD RX series graphics cards.
8.6
PC Monitor
What it is: PC Monitor. The TV will be used as a PC monitor, from 2-3 feet away, either for productivity purposes or gaming. Sharp text is important, as well as a high resolution.
Score components:
Type : LED
Sub-Type
What it is: Type of display technology used by the TV.
When it matters: Different technologies have different performance and are suited to different uses
Good value: IPS maintains good color accuracy at an angle, but has a poor contrast ratio from in front. VA has great picture quality in front, but loses saturation at an angle. OLED maintains good color accuracy at an angle without any of the other issues seen with IPS and VA, as they keep good brightness and contrast at an angle.
:
IPS
Resolution : 4k

The LG SM8600 is a good UHD IPS TV with decent picture quality, excellent response time, and very low input lag that'll please gamers. It has decent SDR peak brightness and is more suitable for average-lit rooms where blacks don't matter as much; the good reflection handling minimizes distracting reflections. As an IPS panel, the SM8600 has wide viewing angles and is great for wide seating arrangements. Unfortunately, blacks look more like gray in a dark room due to the low contrast ratio and the inefficient local dimming. HDR isn't that great either, as the TV can't get very bright in HDR to display bright highlights as it should.

Pros
  • Excellent low input lag.
  • Image remains accurate when viewed from the side.
Cons
  • Sub-par dark room performance.
  • HDR doesn't add much.

Test Results
Design 9.0
Picture Quality 7.2
Motion 8.1
Inputs 9.6
Sound Quality 5.5
Smart Features 8.2

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Market Context

What it is: This model's position in the TV market; how it compares to other TVs.

The LG SM8600 is a 2019 mid-range UHD TV in LG's NanoCell series. It's the replacement of the LG SK8000 in LG's lineup and its direct competitors are other mid-range LED TVs like the Sony X850F, the Samsung RU8000, or the Vizio M Series 2018.

9.0

Design

Score components: Subjectively assigned
Curved : No

The LG SM8600 has an excellent design. The stand is made of plastic and supports the TV well. However, the TV wobbles significantly if you nudge it. The back of the TV is made of thin metal and has a mild brushed texture, but has no grooves to guide the cables to the stand's hollow neck. The TV is thin and won't stick out much if wall-mounted. Finally, the build quality is decent and we don't expect you to have any issues with it.

Stand

The stand of the TV is plastic and resembles last year's SK8000. Although the stand supports the TV well, its neck has a lot of flex and the TV wobbles significantly if nudged.

Footprint of the 55" TV stand: 33.1" x 9.25".

Back
Wall Mount : VESA 300x300

The back of the TV is plain with a mild brushed texture. It's made of a metal sheet that flexes easily if you gently push it inwards. The stand's neck is hollow (has a removable cover) and you can guide the cables through the slot to help with cable management.

Borders
Borders : 0.45" (1.1 cm)

The borders are thin and made of metal. They look good and give the TV a premium feel.

Thickness
Max Thickness : 2.50" (6.3 cm)

The SM8600 is a relatively thin TV. It's slightly thinner than last year's SK8000 but thicker than the SK9000. The TV won't stick out too much if you wall-mount it.

Temperature
What it is: It is the average and maximum operating temperatures we measured on the TV. If there is an external device, like a One Connect box in some Samsungs, we measure the temperature of that as well.
When it matters: If the temperature of your TV is much higher, check that nothing is blocking the vents.
Maximum Temperature
What it is: The peak temperature found on the TV.
When it matters: If the TV is placed in an enclosed space.
Good value: <35°C
Noticeable difference: 5°C
:
105 °F (41 °C)
Average Temperature
What it is: The average temperature measured on the TV.
When it matters: If the TV is placed in an enclosed space.
Good value: <35°C
Noticeable difference: 5°C
:
92 °F (34 °C)
7.0 Build Quality
What it is: It represents our perception of the quality of the construction of the TV, of the materials used, and how they all blend.
When it matters: Poor build quality might lessen the expected lifetime of the TV, or make it more prone to faults due to mishandling.
Score components: Subjectively assigned

The SM8600 has a decent build quality. It has a metal back which has a little flex, and the stand allows more wobbling than the SK8000. However, the TV feels solid, and the border finish gives it a more premium feel. You shouldn't have any issues with it.

7.2

Picture Quality

The SM8600 has decent overall picture quality. However, blacks in a dark room look more like gray due to the low contrast ratio, and the local dimming can't help improve that. The TV is more suitable for average lit or dim rooms, as it can't get very bright in SDR. On the upside, it can handle reflections well, so you won't be distracted if the room has a few lights. The gray uniformity is good with minimal dirty screen effect to please demanding sports fans. The TV has a wide color gamut, but it can't get very bright in HDR and thus it can't display HDR content as bright as it should. Finally, the viewing angles are decent and the image remains accurate if you watch from the side. This is great if you have a large room with a wide seating arrangement.

6.3 Contrast
What it is: Brightness difference between white and black. This is the main component of picture quality.
When it matters: Always, but especially when watching dark scenes.
Score components:
Native Contrast
What it is: Ratio of the white brightness divided by the blacks measured on our checkerboard test pattern with a white target of 100 cd/m².
When it matters: Dark scenes in a dark room.
Good value: > 3,000
Noticeable difference: 500
:
1176 : 1
Contrast with local dimming
What it is: Ratio of the white brightness divided by the blacks measured on our checkerboard test pattern with local dimming turned on (maximum) with a white target of 100 cd/m².
When it matters: Dark scenes in a dark room.
Good value: > 3,000
Noticeable difference: 500
:
1182 : 1

The SM8600 has a mediocre contrast ratio, as expected for a TV with an IPS panel. The contrast ratio does not improve when local dimming is enabled. This is due to the fact that the TV is edge lit and local dimming cannot help in our checkered pattern. This performance is very similar to last year's SK8000.

If you want a TV with deeper blacks, then check out the TCL 6 Series R617 or the Vizio P Series 2018.

1.5 Local Dimming
What it is: The lights behind the LCD layer adapt to the picture displayed, improving the contrast ratio.
When it matters: Dark scenes viewed in a dark room.
Score components: Subjectively assigned
Local Dimming
What it is: Whether it has a feature that controls the LEDs behind the LCD layer, to match the picture and darkens the dark portion of it.
When it matters: On LED TVs only. Dark scenes viewed in a dark room.
:
Yes
Backlight
What it is: Configuration of the lights of the backlight.
When it matters: Effectiveness of the local dimming.
Good value: Full-array/direct lighting is better for local dimming. As for the uniformity of the screen, it depends on the implementation. Some edge-lit TVs have more uniform blacks than some full-array TVs.
:
Edge

The LG SM8600 has bad local dimming. It is an edge-lit TV and thus has vertical local dimming zones which can cause issues with local dimming performance. The TV, however, has particularly bad local dimming performance when LED Local Dimming is set to 'High.' In certain scenes, the TV reacts to brightness changes in small areas of the screen by brightening/dimming entire vertical columns, which causes significant blooming; this is very distracting.

Setting LED Local Dimming to 'Medium' makes this a lot milder, although many people will still find this vertical blooming distracting. We recommend you set the LED Local Dimming to 'Medium.'

The local dimming performance is very similar to last year's SK8000, but the SM8600 has a less aggressive performance when LED Local Dimming is set to 'Medium.'

The above video displays the TV's performance with our recommended local dimming setting of 'Medium'.

6.7 SDR Peak Brightness
What it is: How bright the screen can get. Measured with local dimming and with SDR content.
When it matters: Bright living rooms; bright objects; SDR content.
SDR Real Scene Peak Brightness
What it is: The maximum luminosity the TV can obtain while playing a movie or while watching a TV show. Our Real Scene was selected to represent a more regular movie condition. All measurements are made with the TV set to be as bright as possible, but with a 6500k white. Measured with local dimming on, max backlight and with an SDR signal. Scene: here.
When it matters: When watching movies and TV shows in SDR.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
253 cd/m²
SDR Peak 2% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 2% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright highlights, present on screen for a short time
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
104 cd/m²
SDR Peak 10% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 10% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright objects, present on screen for a short time
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
182 cd/m²
SDR Peak 25% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 25% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
283 cd/m²
SDR Peak 50% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 50% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
282 cd/m²
SDR Peak 100% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 100% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
281 cd/m²
SDR Sustained 2% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 2% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright highlights, persistent during a scene.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
103 cd/m²
SDR Sustained 10% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 10% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright objects, persistent during a scene.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
181 cd/m²
SDR Sustained 25% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 25% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
283 cd/m²
SDR Sustained 50% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 50% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
281 cd/m²
SDR Sustained 100% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 100% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
Good value: > 300 cd/m²
Noticeable difference: 30 cd/m²
:
281 cd/m²
SDR ABL
What it is: The coefficient of variation of the SDR sustained brightness, after linearizing for noticeable differences in luminosity
When it matters: Content with large bright areas, such as for PC or video game use, and sports such as hockey
Good value: <0.07
Noticeable difference: 0.01
:
0.070

The SDR peak brightness is decent. it is slightly brighter than last year's SK8000 but it is still more suitable for dim or average-lit rooms.

We measured the peak brightness after calibration, using 'ISF Expert (Dark Room)' Picture Mode, with Backlight set to '100,' LED Local Dimming set to 'Medium,' and Color Temperature set to 'Warm2.'

If you do not care about image accuracy, you can obtain higher brightness levels. We were able to reach 487 nits with the 10% window using the default settings of the 'Vivid' Picture Mode and LED Local Dimming set to 'Medium.'

6.2 HDR Peak Brightness
What it is: How bright the screen can get. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright living rooms; bright objects; HDR content.
HDR Real Scene Peak Brightness
What it is: The maximum luminosity the TV can obtain while playing a movie or while watching a TV show. This scene was selected to represent a more realistic movie condition. All measurement are made with the TV set to be as bright as possible, but with a 6500k white. Measured with local dimming, max backlight and over HDR signal. Scene: here.
When it matters: When watching movies or watching TV show in HDR.
Good value: > 550 cd/m²
Noticeable difference: 80 cd/m²
:
308 cd/m²
HDR Peak 2% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 2% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright highlights, present on screen for a short time; especially for HDR content.
Good value: > 550 cd/m²
Noticeable difference: 80 cd/m²
:
432 cd/m²
HDR Peak 10% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 10% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright objects, present on screen for a short time; especially for HDR content.
Good value: > 550 cd/m²
Noticeable difference: 80 cd/m²
:
428 cd/m²
HDR Peak 25% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 25% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright rooms; bright objects in HDR video.
Good value: > 550 cd/m²
Noticeable difference: 80 cd/m²
:
377 cd/m²
HDR Peak 50% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 50% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright rooms.
Good value: > 550 cd/m²
Noticeable difference: 80 cd/m²
:
336 cd/m²
HDR Peak 100% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 100% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright rooms.
Good value: > 550 cd/m²
Noticeable difference: 80 cd/m²
:
336 cd/m²
HDR Sustained 2% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 2% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright highlights, persistent throughout a scene; especially for HDR content.
Good value: > 550 cd/m²
Noticeable difference: 80 cd/m²
:
240 cd/m²
HDR Sustained 10% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 10% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright objects, persistent throughout a scene; especially for HDR content.
Good value: > 550 cd/m²
Noticeable difference: 80 cd/m²
:
270 cd/m²
HDR Sustained 25% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 25% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright rooms; bright objects in HDR video.
Good value: > 550 cd/m²
Noticeable difference: 80 cd/m²
:
334 cd/m²
HDR Sustained 50% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 50% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright rooms.
Good value: > 550 cd/m²
Noticeable difference: 80 cd/m²
:
335 cd/m²
HDR Sustained 100% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 100% of the screen, with the TV set to be as bright as possible. Measured with local dimming and over HDR signal (if supported).
When it matters: Bright rooms.
Good value: > 550 cd/m²
Noticeable difference: 80 cd/m²
:
335 cd/m²
HDR ABL
What it is: The coefficient of variation of the HDR sustained brightness, after linearizing for noticeable differences in luminosity
When it matters: HDR content with large bright areas, such as HDR gaming
Good value: <0.07
Noticeable difference: 0.01
:
0.024

The HDR peak brightness is mediocre. Although the peak brightness is slightly lower than last year's LG SK8000, the two TVs seem to have different behavior in HDR. The SM8600 seems to be boosting smaller highlights even if it can't sustain this brightness, whereas the SK8000 has a very uniform level of brightness across scenes except for very small highlights that are significantly dimmed.

We measured the peak brightness before calibration, using 'Cinema' Picture Mode, with BackLight set to '100,' LED Local Dimming set to 'Medium,' and Color Temperature set to 'Warm2.'

If you do not care about image accuracy, you can obtain higher brightness levels. We were able to reach 455 nits with the 10% window using default settings of the 'Vivid' Picture Mode.

7.3 Gray Uniformity
What it is: Evenness of colors onscreen (not just gray).
When it matters: Solid colors. Sports, panning shots.
Score components:
50% Std. Dev.
What it is: Average squared difference of pixels when displaying a mid 50% gray.
When it matters: Solid colors. Sports, panning shots.
Good value: < 2.5%
Noticeable difference: 1%
:
4.707 %
50% DSE
What it is: Dirty Screen Effect. High-frequency variance of uniformity. Dark spots on the screen.
When it matters: Solid colors. Sports, panning shots.
Good value: < 0.165%
Noticeable difference: 0.025%
:
0.167 %
5% Std. Dev.
What it is: Average squared difference of pixels when displaying a mid 5% gray.
When it matters: Dark scenes.
Good value: < 1.15%
Noticeable difference: 1%
:
0.467 %
5% DSE
What it is: Dirty Screen Effect. High-frequency variance of uniformity. Dark spots on the screen.
When it matters: Dark scenes.
Good value: < 0.116%
:
0.116 %

The LG SM8600 has decent gray uniformity. The edges of the screen are a little darker than the rest. The center is more uniform, and the minimal dirty screen effect is unlikely to bother sports fans. In darker scenes, the uniformity is better and you hardly notice any distracting blooming.

6.8 Viewing Angle
What it is: Color accuracy when viewed from the side.
When it matters: Large living rooms with multiple viewing positions.
Color Washout
What it is: The angle at which some colors drop to 80% of their original chroma.
When it matters: When viewing colorful content from the side.
Good value: > 45°
Noticeable difference: 10°
:
26 °
Color Shift
What it is: The angle at which some colors hue shift by 3° (meaning they change color, such as becoming more blue-ish).
When it matters: When viewing colorful content from the side.
Good value: > 45°
Noticeable difference: 10°
:
45 °
Brightness Loss
What it is: The angle at which the TV's lightness drops to 75% of its original lightness.
When it matters: When viewing any content from the side.
Good value: > 45°
Noticeable difference: 10°
:
30 °
Black Level Raise
What it is: The angle at which the black level doubles its lightness, leading to dark shades looking washed out.
When it matters: When viewing dark content from the side.
Good value: > 45°
Noticeable difference: 10°
:
70 °
Gamma Shift
What it is: The angle at which some grayscale shades shift by 3% of their relative position between the black and white levels.
When it matters: When watching any content at an angle.
Good value: > 45°
Noticeable difference: 10°
:
28 °

The LG SM8600 has decent viewing angles as expected for an IPS panel TV. The image remains accurate for wider angles as you move off-center, and the TV is a good choice if you often watch from the side. However, when the viewing angles increase further, the TV loses accuracy as gamma shifts and brightness is diminished. For even wider viewing angles, check out an OLED TV like the LG B8.

4.9 Black Uniformity
What it is: Evenness of blacks.
When it matters: Dark scenes viewed in a dark room.
Score components:
Native Std. Dev.
What it is: Average of the squared difference of the blacks.
When it matters: Dark scenes viewed in a dark room.
Good value: < 1%
Noticeable difference: 1%, but keep in mind that it varies a lot by unit, even of the same model; yours likely will not end up exactly like ours.
:
2.050 %
Std. Dev. w/ L.D.
What it is: Average of the squared difference of the blacks with Local Dimming enabled
When it matters: Dark scenes viewed in a dark room.
Good value: < 1%
Noticeable difference: 1%, but keep in mind that it varies a lot by unit, even of the same model; yours likely will not end up exactly like ours.
:
4.766 %

The SM8600 has disappointing black uniformity. However, this is expected on IPS panel TVs. When local dimming is disabled, there is visible backlight bleed and blooming. With local dimming enabled and set to 'Medium,' the edges are a little darker but a significant area to the left and to the right of the test cross remains lit. The overall black uniformity performance is better than that of the SK8000.

8.8 Reflections
What it is: How much light is reflected by the TV.
When it matters: Bright rooms.
Score components:
Screen Finish
What it is: Type of coating on the screen.
When it matters: Bright objects in the direct reflection path (for example, opposite the TV).
Good value: Glossy is good for ambient light, but not for direct reflections.
:
Semi-gloss
Total Reflections
What it is: The amount of light which is reflected off the screen, in all directions.
When it matters: When watching TV in a bright room, with lamps, windows or walls which reflect directly off the screen.
Good value: 4.5 %
Noticeable difference: 0.5 %
:
3.0 %
Indirect Reflections
What it is: The amount of light reflected off the screen, ignoring direct (mirror-like) reflections
When it matters: Watching TV in a bright room, without sunlight or lamps directed at the TV
Good value: 1.0 %
Noticeable difference: 0.5 %
:
0.5 %

The reflection handling is excellent. It is almost identical to last year's SK8000 and UK7700. The semi-gloss filter diffuses reflections, reducing their overall intensity so you won't be distracted if your room has a few extra lights.

6.0 Pre Calibration
What it is: TV's color accuracy before a full calibration. The only settings that are changed are those that don't vary from unit to unit, like picture mode, color temperature and gamma.
When it matters: All video on an uncalibrated TV. This represents most people's use cases.
Score components:
White Balance dE
What it is: Average inaccuracy of shades of gray.
When it matters: Overall color temperature of all video.
Good value: < 3
Noticeable difference: 1
:
5.12
Color dE
What it is: Average inaccuracy of colors.
When it matters: All colors.
Good value: < 3
Noticeable difference: 1
:
3.47
Gamma
What it is: Brightness of shades of gray.
When it matters: Shadows.
Good value: Between 2.1 and 2.3 (our target is 2.2)
Noticeable difference: 0.1
:
2.11
Color Temperature
What it is: The color temperature is a measure of the color of light. A colder color temperature (7000K) will look bluer and a warmer color temperature (4000K) will look yellower/redder. 6500K is the standard color temperature use in the TV and film industry as program, film, and photography directors usually work on monitors calibrated on the 6500k color temperature and do their color correction base on what they see on those monitors.
When it matters: To get the most accurate picture when watching TV shows, movies or video games. This is particularly for skin tones.
Good value: 6500K
Noticeable difference: 400K
:
5905 K
Picture Mode
What it is: The picture mode used to do the 'Pre Calibration' measurements.
:
Expert (Dark Room)
Color Temp Setting
What it is: The best value for the TV's color temperature setting. The setting name differs between brands; for some it's "Color Temperature", for others its "White Point".
When it matters: All content on screen
:
Warm 2
Gamma Setting
What it is: The best value for the TV's gamma setting; the setting name differs between TV brands.
When it matters: Shadows, accurate grayscale performance.
:
2.2

The LG SM8600 has mediocre accuracy with our pre-calibration settings. There are significant inaccuracies that most people will notice both in the shades of gray and in the colors. The gamma does not track the target very well and thus most scenes are a bit brighter than they should be. The color temperature is significantly warmer than the target of 6500K, and the image has a red-yellowish tint.

9.5 Post Calibration
What it is: TV's color accuracy after a full calibration with a spectrophotometer.
When it matters: All video on a TV that has been professionally calibrated. This isn't that useful, because most TVs can achieve a pretty good calibration if you spend enough time on them.
Score components:
White Balance dE
What it is: Average inaccuracy of shades of gray.
When it matters: Overall color temperature of all videos.
Good value: < 3
Noticeable difference: 1
:
0.62
Color dE
What it is: Average inaccuracy of colors.
When it matters: All colors.
Good value: < 3
Noticeable difference: 1
:
0.85
Gamma
What it is: Brightness of shades of gray.
When it matters: Shadows.
Good value: Between 2.1 and 2.3 (our target is 2.2)
Noticeable difference: 0.1
:
2.16
Color Temperature
What it is: The color temperature is a measure of the color of light. A colder color temperature (7000K) will look bluer and a warmer color temperature (4000K) will look yellower/redder. 6500K is the standard color temperature use in the TV and film industry as program, film, and photography directors usually work on monitors calibrated on the 6500k color temperature and do their color correction base on what they see on those monitors.
When it matters: To get the most accurate picture when watching TV shows, movies or video games. This is particularly for skin tones.
Good value: 6500K
Noticeable difference: 400K
:
6526 K
White Balance Calibration
What it is: Whether the TV's white balance can be finely calibrated.
When it matters: When calibrating the TV.
:
22 point
Color Calibration
What it is: Whether the TV's color tone mapping can be finely calibrated.
When it matters: When calibrating the TV.
:
Yes
Auto-Calibration Function
What it is: Whether the TV has an auto-calibration function that can be used with a measurement device. Note that this is not used during testing, as we calibrate the TV manually.
When it matters: When calibrating the TV.
:
Yes

After calibration, the SM8600 has almost perfect accuracy. The white balance dE and color dE are both very good which means that most of the inaccuracies were corrected. Any remaining inaccuracies are unnoticeable without the aid of a colorimeter.

The TV features an auto-calibration feature which still requires the use of colorimeter.

You can see our recommended settings here.

8.0 480p Input
What it is: Quality of a 480p input.
When it matters: Standard definition TV, DVDs.
Score components: Subjectively assigned

The LG SM8600 upscales 480p content, like DVDs, well without any obvious upscaling artifacts. When compared to other TVs, the SM8600 is performing in the same ballpark as the Samsung Q70R.

8.0 720p Input
What it is: Quality of a 720p input.
When it matters: HD channels, some streaming videos.
Score components: Subjectively assigned

720p content, like cable TV, is upscaled well, with no strange artifacts. This performance is in the same ballpark as the LG C9.

9.0 1080p Input
What it is: Quality of a 1080p input.
When it matters: Blu-rays, streaming video, video files, video games.
Score components: Subjectively assigned

Blu-rays and 1080p content look almost as good as native 4k content.

10 4k Input
What it is: Quality of a 4k UHD input.
When it matters: Streaming video, UHD Blu-rays, PC use.
Score components: Subjectively assigned

Native 4k content displays perfectly.

7.8 Color Gamut
What it is: How many colors the TV can display.
When it matters: HDR content. Includes some streaming videos and UHD Blu-rays.
Score components:
Wide Color Gamut
What it is: Whether the TV has an option to enable wide color gamuts.
When it matters: HDR content. Includes some streaming videos and UHD Blu-rays.
:
Yes
DCI P3 xy
What it is: Coverage of the DCI P3 colorspace on CIE 1931 xy.
When it matters: DCI P3 content. Includes HDR, UHD Blu-rays.
Good value: > 90%
Noticeable difference: 5%
:
85.69 %
DCI P3 uv
What it is: Coverage of the DCI P3 colorspace on CIE 1976 u' v'.
When it matters: DCI P3 content. Includes HDR, UHD Blu-rays.
Good value: > 90%
Noticeable difference: 5%
:
91.67 %
Rec 2020 xy
What it is: Coverage of the Rec.2020 colorspace on CIE 1931 xy.
When it matters: Rec.2020 content. Includes HDR, UHD Blu-rays.
Good value: > 90%
Noticeable difference: 5%
:
63.26 %
Rec 2020 uv
What it is: Coverage of the Rec.2020 colorspace on CIE 1976 u' v'.
When it matters: Rec.2020 content. Includes HDR, UHD Blu-rays.
Good value: > 90%
Noticeable difference: 5%
:
70.41 %

The SM8600 has a good wide color gamut. It's a slight improvement over last year's SK8000.

The EOTF is slightly over-brightening some very dark scenes, but, in general, it follows the input stimulus well until it starts a sharp roll off towards the TV's peak brightness. The 'Game' mode EOTF is almost identical as you can see here.

If you find HDR too dim, check out our recommendations here. With these settings, the SM8600 is a little brighter in HDR, as shown in this EOTF.

We also measured the tone mapping at 50% stimulus to check if the TV is prioritizing brightness over color accuracy. As we can see from the results for the Rec. 2020 color space, and the results for the DCI-P3 color space, the tone mapping is much better at the 50% stimulus. This means that the TV has better color accuracy at lower brightness levels since the tone mapping is better.

6.8 Color Volume
What it is: How many colors a TV can display at different luminosity levels.
When it matters: HDR content. Includes some streaming videos, UHD Blu-rays and HDR games.
Normalized DCI P3 Coverage ITP
What it is: How much of the DCI-P3 colorspace a TV can display at different luminosity levels
When it matters: HDR content. Includes some streaming videos, UHD Blu-rays and HDR games.
Good value: 80%
Noticeable difference: 5%
:
77.2 %
10,000 cd/m² DCI P3 Coverage ITP
What it is: How much of the DCI-P3 colorspace a TV can display at different luminosity levels when compared to an ideal 10,000 nit TV
When it matters: HDR content. Includes some streaming videos, UHD Blu-rays and HDR games.
:
35.0 %
Normalized Rec 2020 Coverage ITP
What it is: How much of the Rec. 2020 colorspace a TV can display at different luminosity levels
When it matters: HDR content. Includes some streaming videos, UHD Blu-rays and HDR games.
Good value: 80 %
Noticeable difference: 5 %
:
59.3 %
10,000 cd/m² Rec 2020 Coverage ITP
What it is: How much of the Rec 2020 colorspace a TV can display at different luminosity levels when compared to an ideal 10,000 nit TV
When it matters: HDR content. Includes some streaming videos, UHD Blu-rays and HDR games.
:
26.8 %

The SM8600 has decent color volume. However, the TV is unable to produce deep, dark colors mainly due to its mediocre contrast ratio. The color volume performance is very similar to last year's SK9000 and better than the SK8000.

8.9 Gradient
What it is: How finely levels of color can be displayed.
When it matters: Details in shadows, sky and skin tones. Matters more for HDR content.
Color Depth
What it is: Number of bits per pixel to represent a specific color. Note: we consider 8-bit with dithering to be equivalent to 10-bit, as long as the 10-bit gradient looks smooth.
When it matters: HDR content like UHD Blu-ray players. Won't matter for cable TV, regular Blu-ray movies, video game consoles or content displayed from a Windows PC. Those are limited to 8-bit color.
Good value: 10-bit.
Noticeable difference: 1 bit.
:
10 Bit
Red (Std. Dev.)
What it is: The standard deviation of the color differences (dE) between subsequent 10 bit red shades.
When it matters: Details in skin tones, sunsets, and other reddish objects. Matters more for HDR content.
Good value: < 0.12 dE
Noticeable difference: 0.01 dE
:
0.087 dE
Green (Std. Dev.)
What it is: The standard deviation of the color differences (dE) between subsequent 10 bit green shades.
When it matters: Details in ocean shades and other greenish objects. Matters more for HDR content.
Good value: < 0.12 dE
Noticeable difference: 0.01 dE
:
0.096 dE
Blue (Std. Dev.)
What it is: The standard deviation of the color differences (dE) between subsequent 10 bit blue shades.
When it matters: Details in skies, water and other blueish objects. Matters more for HDR content.
Good value: < 0.12 dE
Noticeable difference: 0.01 dE
:
0.075 dE
Gray (Std. Dev.)
What it is: The standard deviation of the color differences (dE) between subsequent 10 bit gray shades.
When it matters: Details in dull colors, such as shadows, glow and urban scenes. Matters more for HDR content.
Good value: < 0.12 dE
Noticeable difference: 0.01 dE
:
0.077 dE

The LG SM8600 has excellent gradient handling. In most real-life content gradients are excellent but there are cases, like the pattern in the photo above, where banding is visible throughout most of the colors and shades. Our test is not run on the picture shown above. It is designed to measure gradient performance in situations that resemble more real-life content, and this is depicted in the results.

If you wish to smooth out gradients, you can enable the Smooth Gradation setting. This setting seems to work well with real-life content but doesn't do anything in our test pattern photo. Enabling Smooth Gradation might cause some loss of fine detail.

This gradient behavior is not new and resembles the behavior we encountered in last year's SK8000.

9.9 Temporary Image Retention
What it is: How much a static image is retained on a TV screen after a certain amount of time.
When it matters:

When watching TV show, playing video games or when using your TV as a PC monitor.

Note that this is different to permanent burn-in, learn more about permanent burn-in here.

IR after 0 min recovery
What it is: Image retention measured right after the static image exposure, without recovery time.
When it matters: When changing channels while watching TV, right after changing the type of content (i.e. stopping playing video game to watch a movie) or changing input.
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0.06 %
IR after 2 min recovery
What it is: Image retention measured after a recovery time of 2 minutes.
When it matters: When changing channels while watching TV, right after changing the type of content (i.e. stopping playing video game to watch a movie) or changing input.
Good value: 0 is perfect
Noticeable difference: 0.015%
:
0.00 %
IR after 4 min recovery
What it is: Image retention measured after a recovery time of 4 minutes.
When it matters: When changing channels while watching TV, right after changing the type of content (i.e. stopping playing video game to watch a movie) or changing input.
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0.00 %
IR after 6 min recovery
What it is: Image retention measured after a recovery time of 6 minutes.
When it matters: When changing channels while watching TV, right after changing the type of content (i.e. stopping playing video game to watch a movie) or changing input.
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0.00 %
IR after 8 min recovery
What it is: Image retention measured after a recovery time of 8 minutes.
When it matters: When changing channels while watching TV, right after changing the type of content (i.e. stopping playing video game to watch a movie) or changing input.
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0.00 %
IR after 10 min recovery
What it is: Image retention measured after a recovery time of 10 minutes.
When it matters: When changing channels while watching TV, right after changing the type of content (i.e. stopping playing video game to watch a movie) or changing input.
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0.00 %

There is some faint image retention immediately after the long exposure of our test image. However, it does not stay on the screen for long and is hardly noticeable in normal content.

10 Permanent Burn-In Risk
What it is: The risk of developing a persistent image retention, also known as burn-in, after being exposed to a static image for a prolonged time
When it matters: When watching TV shows, playing video games or when using your TV as a PC monitor where static content is present
Score components:
Permanent Burn-In Risk
What it is: If the TV faces a risk of developing permanent burn-in after being expose, for a long period of time, to static images.
When it matters: When watching TV shows with static logos or banners (news or sports channels), when playing video games with a HUD (head up display), and when using a TV as a PC monitors.
:
No

While some IPS panels can have some temporary image retention, this doesn't seem to be permanent as the IPS panel in our long-term test appears to be immune.

Pixels
What it is: The smallest element a screen can display is called a pixel. In color TVs, this consists of three (or more) subpixels. This is a picture of the TV's pixel structure.
When it matters: It can help explain some display behaviors and can provide an indication of whether two panels are the same or not.
8.1

Motion

The motion handling of the SM8600 is excellent. It has a very fast response time which is great for watching fast action sports or playing video games. The TV uses PWM to dim its backlight at a flicker frequency of 240Hz which might bother some people. The TV's fast response time can make low frame rate content to appear to stutter, which you can remove with the help of the TV's motion interpolation. The SM8600 can display movies free from judder from most sources, including its native apps.

9.0 Response Time
What it is: Amount of blur in fast motion.
When it matters: Sports, video games.
Score components:
80% Response Time
What it is: How quickly pixels can reach 80% of a full transition from one color to another.
When it matters: Fast movement.
Good value: < 8 ms
Noticeable difference: 4 ms
:
4.2 ms
100% Response Time
What it is: How quickly pixels can fully transition from one color to another.
When it matters: Fast movement.
Good value: < 20 ms
Noticeable difference: 10 ms
:
12.4 ms

The SM8600 has a very fast response time. There is very little overshoot and the overall performance is very similar to last year's SK8000.

6.0 Flicker-Free
What it is: How noticeable flicker is on the screen, when all optional flicker has been disabled.
When it matters: All usages, but particularly when viewing fast motion (such as in sports and video games) or when using the TV as a PC monitor.
Score components:
Flicker-Free
What it is: Whether the screen will be perceived as having no flicker during normal viewing conditions.
When it matters: When flicker is especially bothersome, such as when using the TV as a PC monitor.
Good value: Yes
:
No
PWM Dimming Frequency
What it is: The flicker frequency of the screen, when all optional flicker has been disabled.
When it matters: All usages, but particularly when viewing fast motion (such as in sports and video games) or when using the TV as a PC monitor.
Good value: 0 Hz or very high frequencies (> 300 Hz). Frequencies that are multiples of 60Hz are better.
:
240 Hz

The SM8600 uses Pulse Width Modulation to dim its backlight. The flicker frequency can be as high as 240Hz. Some of the TVs picture modes, that are primarily aimed at movies ('Cinema,' 'ISF Expert (Dark Room),' etc), have 240Hz flicker. However, when TruMotion is enabled, the flicker switches to 120 Hz in these modes.

The other picture modes like 'Game,' 'Standard,' 'Sports,' etc always have 120Hz flicker.

10 Black Frame Insertion (BFI)
What it is: How effective the TV's flickering capabilities are in making motion look clearer, when flicker is desired.
When it matters: When flicker is desired by the user. Flicker is especially useful to make motion look clearer when viewing 60 fps content (sports, video games) and when using motion interpolation.
Optional BFI
What it is: Option to turn the screen black between frames.
When it matters: When flicker is desired by the user. Flicker is especially useful to make motion look clearer when viewing 60 fps content (sports, video games) and when using motion interpolation.
Good value: Yes
:
Yes
Min Flicker for 60 fps
What it is: Lowest possible frequency of flickering pattern when playing 60 fps content.
When it matters: When viewing fast motion such as sports and video games.
Good value: 60 Hz
Noticeable difference: 20 Hz
:
60 Hz
60 Hz for 60 fps
What it is: Whether the screen can flicker at 60 Hz when playing 60 fps content.
When it matters: When playing 60 fps content, such as sports and video games.
Good value: Yes
:
Yes
120 Hz for 120 fps
What it is: Whether the screen can flicker at 120 Hz when playing 120 fps content.
When it matters: When playing 120 fps content, such as when using motion interpolation on a 120 Hz TV.
Good value: Yes
:
Yes
Min Flicker for 60 fps in Game Mode
What it is: Lowest possible frequency of flickering pattern when playing 60 fps content in Game Mode.
When it matters: When playing video games with fast motion.
Good value: 60 Hz
Noticeable difference: 20 Hz
:
60 Hz

The LG SM8600 has an optional Black Frame Insertion feature that can lower the flicker frequency and make motion look crisper.

To activate this option, enable TruMotion to 'User' and this will immediately make the flicker frequency 120Hz no matter the picture mode. If you set Motion Pro to 'On' then the flicker frequency becomes 60Hz.

Unfortunately, this decreases the picture brightness, and 60Hz flicker can be bothersome to some people.

When you are in 'Game' mode the flicker frequency is always 120Hz. To lower the frequency to 60Hz, you must follow the same procedure as before.

10 Motion Interpolation
What it is: Also known as 'Soap Opera Effect'. It is an optional feature that increases the frame rate of the video, smoothing movement.
When it matters: If you like the look of smoothed video. Not everyone does.
Motion Interpolation (30 fps)
What it is: Whether the TV can take a 30 fps input and heighten the frame rate to at least 60 fps.
When it matters: 30 fps or lower videos. Includes movies, TV shows, some video games.
:
Yes
Motion Interpolation (60 fps)
What it is: Whether the TV can take a 60 fps input and heighten the frame rate to at least 100 fps.
When it matters: 60 fps videos. Includes some video games, some sports channels.
:
Yes

The LG SM8600 can interpolate lower frame-rate content up to 120fps. The TV stops interpolating in very fast scenes to avoid creating too many artifacts. When this happens, the sudden change in frame rate can be noticeable as a sudden "jerk" in motion. To enable motion interpolation, enable the TruMotion setting.

See here for the settings that control the SM8600's motion interpolation feature.

Note that just enabling TruMotion changes the backlight flicker to 120Hz.

7.2 Stutter
What it is: Jarring effect caused by static frame time during motion sequences
When it matters: When watching content with long panning shots and other smooth movement
Frame Hold Time @ 24 fps
What it is: Time that frame is static during 24Hz videos such as movies
When it matters: When watching movies and other low frame rate content which contain panning shots
Good value: < 24 ms
Noticeable difference: 5 ms
:
29.3 ms
Frame Hold Time @ 60 fps
What it is: Time that frame is static during 60 fps content such as TV shows
When it matters: When watching 60 fps content containing slow panning shots (such as field sports)
Good value: < 24 ms
Noticeable difference: 5 ms
:
4.3 ms

The SM8600 has a very fast response time, which makes the image appear to stutter in movies or other lower frame rate content. If stutter bothers you, motion interpolation or the optional black frame insertion feature can help.

8.9 24p Judder
What it is: Whether 24p content can play without any judder.
When it matters: Only 24p content (mostly just movies).
Judder-Free 24p
What it is: Judder-free movies over 24p signal.
When it matters: Blu-ray and DVD movies; 24 hz PC signal.
:
Yes
Judder-Free 24p via 60p
What it is: Judder-free movies over 60p signal.
When it matters: Movies from streaming devices (Apple TV, Fire TV, etc.); 60 hz PC signal.
:
Yes
Judder-Free 24p via 60i
What it is: Judder-free movies over 60i signal.
When it matters: Movies from cable/satellite boxes.
:
No
Judder-Free 24p via Native Apps
What it is: Judder-free movies when playing from native apps.
When it matters: Movies from streaming native apps (Netflix, Amazon TV, etc.).
:
Yes

The SM8600 is judder-free from most sources. Unfortunately, during our test, the TV was unable to completely remove 24p judder from 60i signals. To remove judder, the Real Cinema option must be enabled in the Picture Option Settings menu.

0 Variable Refresh Rate
What it is: How frequently the TV can refresh and show new frames, and whether it can vary its refresh rate in real time using technologies like HDMI Forum's Variable Refresh Rate.
When it matters: Mostly for gaming, but does provide a little better motion during normal usage.
Native Refresh Rate
What it is: The out-of-the-box maximum refresh rate; how frequently the TV can refresh and show new frames.
When it matters: When playing content with a frame rate that matches the TV's refresh rate (ex. 60 fps on a 60 Hz TV, 120 fps on a 120 Hz TV), or when using the TV's motion interpolation feature (soap opera effect).
Good value: 60 Hz
:
120 Hz
Variable Refresh Rate
What it is: Feature that allows the TV to synchronize its refresh rate with the input device's output and reduces stuttering and screen tearing.
When it matters: Almost every usage, but is most noticeable when gaming where constant fluctuation in framerate cause distracting artifacts.
:
No
4k VRR Maximum
What it is: The maximum frequency in the Variable Refresh Rate feature's range when the input signal is 4k.
When it matters: When gaming in 4k with VRR enabled, such as when using an Xbox One X/S or a PC.
Good value: Matches maximum refresh rate at 4k.
Noticeable difference: 10 Hz
:
N/A
4k VRR Minimum
What it is: The lowest frequency in the Variable Refresh Rate feature's range when the input signal is 4k.
When it matters: When gaming in 4k with VRR enabled, such as when using an Xbox One X/S or a PC.
Good value: 30 Hz
:
N/A
1080p VRR Maximum
What it is: The maximum frequency in the Variable Refresh Rate feature's range when the input signal is 1080p.
When it matters: When gaming in 1080p with VRR enabled, such as when using an Xbox One X/S or a PC.
Good value: Matches maximum refresh rate at 1080p.
Noticeable difference: 10 Hz
:
N/A
1080p VRR Minimum
What it is: The lowest frequency in the Variable Refresh Rate feature's range when the input signal is 1080p.
When it matters: When gaming in 1080p with VRR enabled, such as when using an Xbox One X/S or a PC.
Good value: 30 Hz
:
N/A
VRR Supported Connectors
What it is: The inputs which support a variable refresh rate (eg. HDMI, DisplayPort)
When it matters: When gaming with different consoles or graphics cards.
:
N/A

The LG SM8600 has a native refresh rate of 120Hz. Unfortunately, it doesn't appear to support any of the variable refresh rate technologies, including FreeSync or the HDMI 2.1 VRR format. We tested this with an Xbox One S, which did support HDMI-Forum VRR on the C9. Although we can't be sure it won't work from an HDMI 2.1 source, we don't expect it to. We will retest this once we have an HDMI 2.1 source.

9.6

Inputs

Score components:

The LG SM8600 has an outstanding low input lag in most modes and also supports the most common resolutions and refresh rates. All resolutions have proper chroma 4:4:4 when the TV is set in PC mode, except for 1080p @ 120Hz which doesn't. It has a good selection of inputs and supports Dolby Digital and DTS passthrough.

9.6 Input Lag
What it is: Delay between input and onscreen reaction.
When it matters: Video games; when TV is used as PC monitor.
1080p @ 60 Hz
What it is: Lowest input lag possible for a 1080p @ 60 Hz input signal.
When it matters: Gaming and PC use.
Good value: < 40 ms
Noticeable difference: 15 ms
:
14.0 ms
1080p @ 60 Hz Outside Game Mode
What it is: Lowest input lag possible for a 1080p @ 60 Hz input signal when in a fully featured picture mode.
When it matters: For gaming and PC use, while retaining access to all features of the TV.
Good value: < 40 ms
Noticeable difference: 15 ms
:
34.6 ms
1440p @ 60 Hz
What it is: Lowest input lag possible for a 1440p @ 60Hz input signal.
When it matters: Gaming and PC use.
Good value: < 40 ms
Noticeable difference: 15 ms
:
14.0 ms
4k @ 60 Hz
What it is: Lowest input lag possible for a 4k @ 60 Hz input signal.
When it matters: Gaming and PC use.
Good value: < 40 ms
Noticeable difference: 15 ms
:
14.0 ms
4k @ 60 Hz + HDR
What it is: Lowest input lag possible for a 4k @ 60 Hz + HDR input signal.
When it matters: Gaming and PC use in HDR.
Good value: < 40 ms
Noticeable difference: 15 ms
:
13.8 ms
4k @ 60 Hz @ 4:4:4
What it is: Lowest input lag possible when displaying 4k @ 60 Hz with proper full 4:4:4 chroma, without subsampling. For this test a 4k @ 60 Hz @ 4:4:4 signal is usually used, but a 4k @ 60 Hz @ Full RGB signal may be used if it's required for the TV to show proper 4:4:4 chroma subsampling.
When it matters: PC use and gaming where fine text display (ClearType) is needed.
Good value: < 40 ms
Noticeable difference: 15 ms
:
30.5 ms
4k @ 60 Hz Outside Game Mode
What it is: Lowest input lag possible for a 4k @ 60 Hz input signal when in a fully featured picture mode.
When it matters: For gaming and PC use, while retaining access to all features of the TV.
Good value: < 40 ms
Noticeable difference: 15 ms
:
34.7 ms
4k @ 60 Hz With Interpolation
What it is: Lowest input lag possible for a 4k @ 60 Hz input signal, when motion interpolation is turned on.
When it matters: When you want to play video games with motion interpolation (Soap Opera Effect) enabled.
Good value: < 40 ms
Noticeable difference: 15 ms
:
82.3 ms
8k @ 60 Hz
What it is: Lowest input lag possible for an 8k @ 60Hz input signal.
When it matters: PC use.
Good value: < 40 ms
Noticeable difference: 15 ms
:
N/A
1080p @ 120 Hz
What it is: Lowest input lag possible for a 1080p @ 120 Hz input signal.
When it matters: Console gaming and PC gaming.
Good value: < 40 ms
Noticeable difference: 15 ms
:
6.8 ms
1440p @ 120 Hz
What it is: Lowest input lag possible for a 1440p @ 120 Hz input signal.
When it matters: Console gaming and PC gaming.
Good value: < 40 ms
Noticeable difference: 15 ms
:
6.8 ms
4k @ 120 Hz
What it is: Lowest input lag possible for a 4k @ 120 Hz input signal.
When it matters: Console gaming and PC gaming.
Good value: < 40 ms
Noticeable difference: 15 ms
:
N/A
1080p with Variable Refresh Rate
What it is: Lowest input lag possible for a 1080p input signal when using Variable Refresh Rate (FreeSync, etc).
When it matters: When gaming with a device that supports Variable Refresh Rate, such as the Xbox One X or a PC.
Good value: < 40 ms
Noticeable difference: 15 ms
:
N/A
1440p with VRR
What it is: Lowest input lag possible for a 1440p input signal when using Variable Refresh Rate (FreeSync, etc).
When it matters: When gaming with a device that supports Variable Refresh Rate, such as the Xbox One X or a PC.
Good value: < 40 ms
Noticeable difference: 15 ms
:
N/A
4k with VRR
What it is: Lowest input lag possible for a 4k input signal when using Variable Refresh Rate (FreeSync, etc).
When it matters: When gaming with a device that supports Variable Refresh Rate, such as the Xbox One X or a PC.
Good value: < 40 ms
Noticeable difference: 15 ms
:
N/A
8k with VRR
What it is: Lowest input lag possible for an 8k input signal when using Variable Refresh Rate (FreeSync, etc).
When it matters: When using a PC that supports Variable Refresh Rate.
Good value: < 40 ms
Noticeable difference: 15 ms
:
N/A
Auto Low Latency Mode (ALLM)
What it is: Whether a source (such as a game console) can request the TV switch into a low latency mode (such as game mode).
When it matters: Console gaming; both PS4 and Xbox One S/X support ALLM.
:
Yes

The SM8600 has a very low input lag which is great news for gamers. To get the lowest input lag you must set the TV in 'Game' mode. To get low input lag and proper chroma 4:4:4 just change the input icon to PC. The picture mode does not matter.

The TV supports an Auto Low Latency mode that LG calls 'Instant Game Response,' but it only works with compatible devices like the Xbox One. When 'Instant Game Response' detects that you're playing a game, it switches to 'Game' mode. After that, if you switch to another picture mode, you are still getting low input lag and the only available settings are the 'Game' mode ones. This means that all picture modes can have the same low input lag when 'Instant Game Response' is activated.

See our recommended gaming settings here.

9.6 Supported Resolutions
What it is: Different resolutions supported by TV.
When it matters: PC monitor usage.
Score components:
  • 17% 1080p @ 60 Hz @ 4:4:4
  • 8% 1080p @ 120 Hz
  • 8% 1440p @ 60 Hz
  • 4% 1440p @ 120 Hz
  • 34% 4k @ 60 Hz
  • 25% 4k @ 60 Hz @ 4:4:4
  • 4% 8k @ 30 Hz or 24 Hz
1080p @ 60 Hz @ 4:4:4
What it is: Whether the TV can properly display a 1080p @ 60 Hz @ 4:4:4 signal sent from a physical input (HDMI, etc).
When it matters: ClearType text display for PC productivity and gaming with fine text.
:
Yes
1080p @ 120 Hz
What it is: Whether the TV can properly display a 1080p @ 120 Hz signal sent from a physical input (HDMI, etc).
When it matters: Console gaming and PC gaming.
:
Yes (native support)
1440p @ 60 Hz
What it is: Whether the TV can properly display a 1440p @ 60 Hz signal sent from a physical input (HDMI, etc).
When it matters: Gaming and PC use.
:
Yes (forced resolution required)
1440p @ 120 Hz
What it is: Whether the TV can properly display a 1440p @ 120 Hz signal sent from a physical input (HDMI, etc).
When it matters: Console gaming and PC gaming.
:
Yes (native support)
4k @ 60 Hz
What it is: Whether the TV can properly display a 4k @ 60 Hz signal sent from a physical input (HDMI, etc).
When it matters: 4k Blu-rays, gaming, PC use, etc.
:
Yes
4k @ 60 Hz @ 4:4:4
What it is: Whether the TV can properly display a 4k @ 60 Hz @ 4:4:4 signal sent from a physical input (HDMI, etc).
When it matters: ClearType text display for PC productivity and gaming with fine text.
:
Yes
4k @ 120 Hz
What it is: Whether the TV can properly display a 4k @ 120 Hz signal sent from a physical input (HDMI, etc).
When it matters: PC gaming.
:
No
8k @ 30 Hz or 24 Hz
What it is: Whether the TV can properly display an 8k @ 30 Hz or 24 Hz signal sent from a physical input (HDMI, etc).
When it matters: PC use.
:
No
8k @ 60 Hz
What it is: Whether the TV can properly display an 8k @ 60 Hz signal sent from a physical input (HDMI, etc).
When it matters: PC use.
:
No

The SM8600 supports the majority of most common resolutions including 1440p, just like the C9.

All supported resolutions can display proper chroma 4:4:4 as long as PC mode is enabled, except the 1080p @ 120Hz which doesn't.

Some of the high bandwidth resolutions, like 4k @ 60Hz + HDR, require the HDMI ULTRA HD Deep Color setting to be enabled for the port in use.

Input Photos
Total Inputs
HDMI : 4
USB : 3
Digital Optical Audio Out : 1
Analog Audio Out 3.5mm : 0
Analog Audio Out RCA : 0
Component In : 0
Composite In : 1 (incl. adapter)
Tuner (Cable/Ant) : 1
Ethernet : 1
DisplayPort : 0
IR In : 0
SD/SDHC : 0
Inputs Specifications
HDR10
What it is: Standard HDR format.
When it matters: Most common format. All UHD Blu-ray discs are required to have it.
:
Yes
HDR10+
What it is: Enhanced version of HDR10, adds dynamic metadata like that found in Dolby Vision.
When it matters: When playing HDR10+ content, such as from Amazon Video and some Blu-ray disks.
:
No
Dolby Vision
What it is: Better format, due to its dynamic nature.
When it matters: Dolby Vision mastered content. Current available from streaming services (Netflix, Amazon Video), some Blu-Ray players, the Apple TV 4k and ChromeCast Ultra.
:
Yes
HLG
What it is: HLG or Hybrid Log Gamma is a broadcast HDR format.
When it matters: HLG capable sources such as Youtube or OTA broadcasts in specific regions. Backwards compatible with SDR TVs.
:
Yes
3D
What it is: Optional 3D video capability on TV.
When it matters: 3D movies & videos.
:
No
HDMI 2.0 Full Bandwidth
What it is: HDMI 2.0 is the main used HDMI standard and supports a range of video resolutions and refresh rates up to 4k@60Hz, with a total maximum bandwidth up to 18Gbps.
:
Yes (HDMI 1,2,3,4)
HDMI 2.1
What it is: Whether the manufacturer advertises HDMI 2.1 support.
When it matters: When using an HDMI 2.1 source that takes advantage of its new features.
:
No
CEC : Yes
HDCP 2.2 : Yes (HDMI 1,2,3,4)
USB 3.0
What it is: USB 3.0 is the latest USB standard which can transfer data up to 5 Gbit/s, and is easily recognizable due to its blue color-coding of the connector.
:
No
Variable Analog Audio Out : No
Wi-Fi Support : Yes (2.4 GHz, 5 GHz)

It's unclear if the SM8600 supports HDMI 2.1 or not. At the moment, we can not confirm this either way, as we have no way of sending an HDMI 2.1 signal. We will retest this when we get a device capable of sending such a signal.

Audio Passthrough
What it is: Whether the specific audio format (ex. Dolby Digital) can be sent by the source, pass through the TV, and be re-sent to an audio sink (such as a receiver) with all its functionality intact.
When it matters: When playing surround sound using a receiver or soundbar, from a source that is connected to the TV.
ARC
What it is: Audio Return Channel (ARC) enables a TV to transmit, via an HDMI cable, audio data to an A/V receiver, without the need for any extra audio cables.
When it matters: When connecting your audio/video receiver directly to your TV via an HDMI cable.
:
Yes (HDMI 2)
eARC support
What it is: Whether the TV supports Enhanced Audio Return Channel (eARC).
When it matters: Passthrough of Dolby Atmos/TrueHD and DTS-HD MA / DTS:X .
:
No
Dolby Atmos via TrueHD via eARC
What it is: Whether the TV can receive and pass a Dolby Atmos signal to a receiver via HDMI eARC, when Dolby TrueHD is used as the carrier signal.
When it matters: Blu-rays and video games with Dolby Atmos audio.
:
No
DTS:X via DTS-HD MA via eARC
What it is: Whether the TV can receive and pass a DTS:X signal to a receiver via HDMI eARC, when DTS-HD MA is used as the carrier signal.
When it matters: Blu-rays and video games with DTS:X audio.
:
No
5.1 Dolby Digital via ARC
What it is: Whether the TV can receive and pass a Dolby Digital 5.1 signal to a receiver via HDMI ARC.
When it matters: 5.1 audio on DVDs, Blu-rays and video games.
:
Yes
5.1 DTS via ARC
What it is: Whether the TV can receive and pass a DTS 5.1 signal to a receiver via HDMI ARC.
When it matters: 5.1 audio on DVDs, Blu-rays and video games.
:
Yes
5.1 Dolby Digital via Optical
What it is: Whether the TV can receive and pass a Dolby Digital 5.1 signal to a receiver via digital optical (Toslink).
When it matters: 5.1 audio on DVDs, Blu-rays and video games.
:
Yes
5.1 DTS via Optical
What it is: Whether the TV can receive and pass a DTS 5.1 signal to a receiver via digital optical (Toslink).
When it matters: 5.1 audio on DVDs, Blu-rays and video games.
:
Yes

Like the 2018 LG OLEDs, the LG SM8600 supports DTS and Dolby Digital passthrough to a standard ARC receiver. It doesn't support eARC as the C9 does.

5.5

Sound Quality

What it is: How well and accurately the audio is reproduced.
When it matters: When a good and accurate sound reproduction is needed.
Score components:

The sound quality is sub-par. The TV doesn't get very loud, and its bass doesn't have any thump or rumble, but also lacks quite a bit of punch. However, the TV will produce clear and intelligible dialog. For a better sound, it's recommended to add dedicated speakers or a soundbar.

5.2 Frequency Response
What it is: How accurately the sound level of each frequency is being produced.
When it matters: For a balanced and neutral sound.
Low-Frequency Extension
What it is: The lowest frequency at which the frequency response reaches -3dB of the target response.
When it matters: Movies, Gaming. Shows how extended the bass is.
Good value: < 60Hz
Noticeable difference: 10Hz
:
151.02 Hz
Std. Dev. @ 70
What it is: The amount of deviation (weighted standard deviation) in frequency response measured at 70dB SPL, as compared to a target response that would sound perfectly balanced to most people.
When it matters: Shows the TV's frequency response at quiet listening levels
Good value: < 4 dB
Noticeable difference: 0.5 dB
:
3.48 dB
Std. Dev. @ 80
What it is: The amount of deviation (weighted standard deviation) in frequency response measured at 80dB SPL, as compared to a target response that would sound perfectly balanced to most people.
When it matters: Shows the TV's frequency response at moderate listening levels
Good value: < 4 dB
Noticeable difference: 0.5 dB
:
4.20 dB
Std. Dev. @ Max
What it is: The amount of deviation (weighted standard deviation) in frequency response measured with the TV at maximum volume, as compared to a target response that would sound perfectly balanced to most people.
When it matters: Shows the TV's frequency response at under maximum load
Good value: < 4 dB
Noticeable difference: 2 dB
:
7.06 dB
Max
What it is: Maximum volume reached by the TV at their optimum viewing distance (size dependent)
When it matters: For listening to loud audio.
Good value: > 88 dB
Noticeable difference: 2 dB
:
84.8 dB SPL
Dynamic Range Compression
What it is: The amount of difference between the TVs frequency response performance at 70dB SPL and Max dB SPL. Too much compression will result in pumping in the sound.
When it matters: When an accurate and free-of-pumping performance is required at higher volumes
Good value: < 3dB
Noticeable difference: 0.5
:
4.77 dB

The frequency response is disappointing. LFE (low-frequency extension) is at 151Hz, which is poor. This means that the bass of this TV won't have any thump or rumble, and will lack quite a bit of punch too. The frequency response above the LFE point is decent and relatively well-balanced so it produces clear dialog, but it may lack a bit of airiness. This TV doesn't get loud and doesn't have a room correction system.

6.2 Distortion
What it is: Deformation of an output signal compared to its input, usually clipping, harmonic distortion, or inter-modulation distortion caused by non-linear behavior of the sound system.
When it matters: When a clean, pure and transparent reproduction is desired.
Score components:
Weighted THD @ 80
What it is: The overall amount of harmonic distortion measured at 80dB SPL. To make the score more perceptually relevant, more weight is given to the higher frequencies.
When it matters: How pure the sound is at moderate listening levels.
Good value: < 0.100
Noticeable difference: 0.100
:
0.184
Weighted THD @ Max
What it is: The overall amount of harmonic distortion measured at the TV's maximum SPL. To make the score more perceptually relevant, more weight is given to the higher frequencies.
When it matters: How pure the sound is at moderate listening levels.
Good value: < 0.100
Noticeable difference: 0.100
:
0.955
IMD @ 80
What it is: The average amount of inter-modulation distortion produced by the TV under maximum load. The percentage shown here is the average result of 3 separate test signals/standards: SMPTE, DIN, & CCIF
When it matters: When a clean and free of aliasing reproduction is desired
Good value: < 5%
Noticeable difference: 2
:
8.52 %
IMD @ Max
What it is: The average amount of inter-modulation distortion produced by the TV under maximum load. The percentage shown here is the average result of 3 separate test signals/standards: SMPTE, DIN, & CCIF
When it matters: When a clean and free of aliasing reproduction is desired
Good value: < 5%
Noticeable difference: 2
:
20.95 %

The distortion performance is mediocre. The overall amount of produced THD is a bit elevated, but it doesn't reach a point where distracting artifacts are audible.

8.2

Smart Features

Score components:
  • 42% Interface
  • 2% Ad-Free
  • 37% Apps and Features
  • 16% Remote
  • 3% Remote App
Smart OS : WebOS
Version : 4.5

The smart features of the LG SM8600 are great. The TV runs LG's WebOS smart interface that has a multitude of apps and gives you access to LG's Content Store where you can find many more. The interface is very similar to last year's and it is very easy to use. The remote is excellent and can be used as a virtual pointer, just like the C9. Among the few new features, there is a Home Dashboard feature that can interact with IoT devices and is very similar to the Samsung Smart Things feature.

8.5 Interface
What it is: The usability, features and performance of the main interface of the TV, not including the interfaces of the apps themselves.
When it matters: Anytime when using the TV, but especially when changing settings and using apps.
Score components: Subjectively assigned
Ease of Use
What it is: How easy the interface is to navigate, affected by the organization of its layout, placing frequently accessed elements in areas that are faster to access, etc.
When it matters: When using the smart features.
:
Easy
Smoothness
What it is: How smooth the interface is to navigate, affected by lag and frame drops.
When it matters: When using the smart features.
:
Average
Time Taken to Select YouTube
What it is: How long it takes to select YouTube for launch, starting from HDMI 1 input, when YouTube is placed first on the list of apps or added as a shortcut. This does not include app launch time, and does not use a fixed YouTube button on a remote. This serves as an indication of the time needed to select any app.
When it matters: When launching any app.
:
2 s
Time Taken to Change Backlight
What it is: The time it takes to navigate to the 'Backlight' setting ('Brightness' on Sony TVs). This serves as an indication of how long it takes to navigate to basic TV settings.
When it matters: When changing TV settings.
:
9 s
Advanced Options
What it is: Whether advanced options and settings are available, such as color calibration.
When it matters: When customizing the TV and using the smart features.
:
Many

The SM8600 has a very good interface that is easy to use. It is relatively smooth, and we didn't have any serious issues with it.

The interface has a few new functions since last year. The Home Dashboard appears to be the most significant change and it is very similar to Samsung's Smart Things.

0 Ad-Free
What it is: Whether or not ads can be found on the TV's smart platform.
When it matters: When using the smart features.
Score components:
Ads
What it is: Whether the TV's main interface has ads. This does take into account ads in third-party apps.
When it matters: When using the smart features.
:
Yes
Opt-out
What it is: Whether or not you can opt out of all ads. A TV only passes this test if it allows you to remove them completely, not just disable the personalized advertising.
When it matters: When using the smart features.
:
No
Suggested Content in Home
What it is: Whether suggested content appears in the TV's home menu or main menu. Suggested content can include recommended movies, TV shows, YouTube videos etc.
:
Yes
Opt-out of Suggested Content
What it is: Whether the suggested content feed in the home menu can be removed or hidden
:
No

We have not found ads on this TV, but LG TVs have ads and suggested content. You can see it in this photo of the UM7300, where 'LG Nanocell' TVs are advertised. Unfortunately, you can't completely opt out, but there's a menu option called 'Home Promotion' which lets you turn off the square on the home bar.

8.0 Apps and Features
What it is: The usability, features and performance of apps and other smart features.
When it matters: Only when using smart features such as apps, casting and USB playback.
Score components: Subjectively assigned
App Selection
What it is: The number and variety of apps available to download for the smart platform.
When it matters: When downloading new apps.
:
Many
App Smoothness
What it is: How smooth it feels to navigate the interfaces of apps, affected by lag and frame drops.
When it matters: When using apps.
:
Average
Cast Capable
What it is: Whether apps on a phone or tablet can cast content to the TV.
:
Yes
USB Drive Playback
What it is: Whether the TV can play content from a drive connected to one of the TV's USB ports.
:
Yes
USB Drive HDR Playback
What it is: Whether HDR files played from a USB drive can be displayed properly.
:
Yes
HDR in Netflix
What it is: Whether HDR content on Netflix can be played back in HDR using the native Netflix app.
:
Yes
HDR in YouTube
What it is: Whether HDR content on YouTube can be played in HDR using the native YouTube app.
:
Yes

The SM8600 has a great selection of built-in apps, just like most LG TVs. LG's Content Store hosts one of the largest selections of apps available. If there is a specific app you want us to check for, let us know in the discussions down below!

9.0 Remote
What it is: The usability and features of the TV's physical remote.
Score components: Subjectively assigned
Size
What it is: How big the remote is
:
Large
Voice Control
What it is: The capabilities of the TV's voice control feature
:
Many Features
CEC Menu Control
What it is: Whether the remote can act as a universal remote for HDMI CEC enabled devices. This was tested on our Samsung UBD-K8500 4K Blu-ray player, and may not be valid for other CEC devices as implementations vary by manufacturer.
:
Yes
Other Smart Features
What it is: Whether the remote has any other smart features, such as a pointer, universal remote support for non HDMI CEC devices, etc.
:
Yes

The remote is identical to the C9 remote and has similar functionalities. It's also similar to last year's model but has a few added features. You can now program the remote to work as a universal remote with other devices over IR, and this is great if HDMI-CEC is not supported. This is similar to Samsung's One Remote feature.

Like with past LG TVs, the remote can be used as a mouse pointer, but you can also navigate the interface using the directional buttons. The remote has a built-in mic that allows you to perform certain functions and searches with your voice.

7.0 Remote App
What it is: The features of the official phone and tablet app for the TV.
Score components: Subjectively assigned
Acts as the Remote
What it is: Whether the remote app can emulate all the buttons of the physical remote.
:
Yes
Directly Launches Apps and Inputs
What it is: Whether the remote app can directly launch the TV's apps and change between its inputs, without requiring any interaction with menus on the TV.
:
Both
Inputs Text in YouTube
What it is: Whether the remote app can enter text for YouTube searches.
:
No
Inputs Text in Netflix
What it is: Whether the remote app can enter text for Netflix searches.
:
No
Streams Device Files
What it is: Whether the remote app can stream files from the phone or tablet to the TV, files such as pictures, music and video.
:
Yes
Controls TV Settings
What it is: Whether the app can change all or some of the settings on the TV, such as the backlight.
:
No
Voice Control
What it is: Whether the remote can send voice commands to the TV.
:
Limited Support

The remote app is the same as the one we saw during the testing of the 2018 LG OLEDs. It still only allows for very basic control of the TV, and it allows for very basic voice searches.

TV Controls

The controls are in the center of the TV. It is a single button that allows you to turn the TV off, adjust the volume, or change channels.

In The Box

  • Basic user manual
  • Remote
  • Cable management strap
  • Composite breakout adapter
  • Batteries
  • Not Shown: Power cable

Misc
Power Consumption : 54 W
Power Consumption (Max) : 116 W
Firmware : 03.50.20

Differences between Sizes and Variants

We tested the 55" LG SM8600 (55SM8600). For the most part, we expect our review to be valid for the 49" model (49SM8600), 65" model (65SM8600), and the 75" (75SM8670) model.

There is a European only variant, the SM8500, which has a slightly different design, but we expect its performance to be almost identical.

If someone comes across a different type of panel or if their LG SM8600 doesn't correspond to our review, let us know and we will update the review.

Size US Canada UK
49" 49SM8600PUA 49SM8600AUE 49SM8600PLA
55" 55SM8600PUA 55SM8600AUE 55SM8600PLA
65" 65SM8600PUA 65SM8600AUE 65SM8600PLA
75" 75SM8670PUA 75SM8670PUA 75SM8610PLA

 

The 55SM8600 we reviewed was manufactured in March 2019.

Compared to other TVs

Top left: LG UM7300 (55UM7300). Bottom left: Samsung RU7300 (UN55RU7300). Middle: LG SM8600 (55SM8600. Top right: Vizio V Series (V505-G9). Bottom right: Samsung RU7100 (UN55RU7100). Unlike our other photographs, this picture wasn't taken under a controlled environment, so do not draw conclusions from it.

The LG SM8600 is a very good TV with great performance in many usages. See our recommendations for the best TVs, the best 4k TVs, and the best HDR gaming TVs.

LG SK8000
49" 55" 65"

The LG SK8000 and the LG SM8600 both have very similar performance. The LG SM8600 supports 1440p, has an auto low latency option, and has a slightly lower input lag for HDR gaming. On the other hand, the LG SK8000 can remove 24p judder from 60i sources.

LG B8 OLED
55" 65"

The LG B8 and the LG SM8600 use different panel technologies, each with their own strengths and weaknesses. The B8 uses an OLED panel, which delivers outstanding dark room performance and crystal-clear motion, thanks to the nearly-instantaneous response time. Unfortunately, the B8 also has a chance of permanent burn-in, which is not an issue on the LG SM8600.

Samsung RU8000
49" 55" 65" 75" 82"

The Samsung RU8000 and the LG SM8600 use different technologies, each with their own strengths and weaknesses. The RU8000 is better suited for viewing in a dark room, sitting directly in front of it. The LG SM8600 is better suited for a brighter room, and the wide viewing angle is better for side seating. Beyond these differences, the RU8000 is brighter, but has worse reflection handling.

LG SK9000
55" 65"

The LG SK9000 is better than the LG SM8600. The SK9000 can deliver a better dark room performance as it has more effective local dimming. The SK9000 is also more suitable for a bright room as it can get brighter in SDR and can deliver better HDR highlights thanks to its better HDR peak brightness. The SM8600, on the other hand, has a faster response time and a lower input lag that is great for playing video games.

LG SM9500
65"

The LG SM9500 is better than the LG SM8600. The SM9500 can get much brighter in SDR, can easily fight glare in a bright room, and is more accurate before calibration. Also, the SM9500 has wider viewing angles can get brighter in HDR, and has full-array local dimming. The SM8600, on the other hand, has better gray uniformity, which is important to sports fans.

Sony X850F
65" 75" 85"

The Sony X850F and the LG SM8600 both have very similar performance. The Sony is more suitable for a brighter room as it can get brighter in SDR and can also display HDR content with bright highlights. The LG has a slightly better dark room performance with a higher contrast ratio and a local dimming feature. The SM8600 also has lower input lag, which is great for gamers, and a better black frame insertion implementation that can make the motion crisper.

Vizio M Series 2018
55" 65" 70"

These two TVs have different panel types, each with their advantages and disadvantages. The Vizio M Series 2018 has a VA panel and is a better choice for those who watch TV in a dark room and sit straight in front. The LG SM8600 has an IPS panel and is more suitable for those who watch TV with some lights on and often sit at an angle. The Vizio can display deeper and more uniform blacks in a dark room and has better HDR performance. The LG, apart from the better refection handling and the wider viewing angles, has a motion interpolation feature for the soap opera effect fans. The LG also supports 1440p and has a lower input lag, which is great for playing video games.

LG SM9000
55" 65" 75" 86"

The LG SM9000 is better than the LG SM8600. The SM9000 is brighter and has a better (but still disappointing) local dimming feature. The SM9000 is a bit more future-proof, as it supports HDMI 2.1, eARC, and HDMI Forum's new variable refresh rate technology.

+ Show more

Conclusion
SEE PRICE
B&H

7.7 Mixed Usage
What it is: General purpose. The TV will be used for a variety of content and usages. Movies at night, TV shows during the day, video games from time to time, etc.
Score components:
This is a good TV for mixed usage. Motion handling is great and the fast response time makes motion look crisp, which is great for watching sports or playing video games. The TV has wide viewing angles and is a good choice for those with wide seating arrangements. It is more suitable for an average-lit room as it can't get very bright. Unfortunately, the low contrast ratio results in blacks that look more like gray when in a dark room. Gamers will appreciate the low input lag.
6.5 Movies
What it is: Movies in the dark. The TV will be used for watching movies in a controlled environment, directly in front, in a home theater way. Mostly only high quality content, like Blu-rays, UHD Blu-rays, streaming and a little bit of HDR.
Score components:
This is a decent TV for watching movies. Blacks in a dark room look more like gray due to the low contrast ratio and the poor black uniformity, and the inefficient local dimming can't help improve that. The SM8600 can display judder-free movies from most sources including its native apps and has a motion interpolation feature for those who enjoy the soap opera effect.
8.0 TV Shows
What it is: TV Shows in a bright living room. The TV will be used in to watch TV shows, in a bright room during the day, from multiple viewing positions at different angles. The content watched has an average quality: cable, streaming, SD channels, etc.
Score components:
The SM8600 is a great TV for watching TV shows in an average lit room. The TV can't get too bright to fight glare, but has good reflection handling so a few lights in the room won't bother you. The image remains accurate when viewed at an angle so you don't have to sit straight in front when you watch your favorite show. Content from cable looks great without upscaling artifacts and LG's Content Store has a large number of apps to choose from.
8.0 Sports
What it is: Sports in a living room. The TV will be used to watch sports during the day, like football or hockey. Usually watched with a group, so from multiple viewing position.
The LG SM8600 is a very good TV for watching sports. Motion handling is great and fast action looks crisp without much blur trail behind fast-moving content. You can easily place it in a room with a few light sources and it will handle reflections well. There is only minimal dirty screen effect that will not bother even demanding sports fans. You can enjoy the big game with a group of friends without worrying about who will watch from the side as the image remains accurate for fairly wide angles.
8.6 Video Games
What it is: Video games. The TV will be used to play video games, directly in front, in a controlled light environment. Usually fast games, like online FPS, where motion blur and input lag is important.
This is an excellent TV for playing video games. It has a very low input lag and a very fast response time so playing games is not only responsive but also looks very crisp. The SM8600 can display content from older consoles very well, with no obvious artifacts. New in this year's LGs is the auto low latency mode that when enabled can detect that you are playing a game and switches automatically to a low input lag mode.
6.5 HDR Movies
What it is: HDR Movies and TV shows. The TV will be used to watch 4k UHD HDR content, with a wide color gamut and a high peak brightness. Either via UHD Blu-rays or HDR streaming.
Score components:
The SM8600 is a decent TV for watching HDR movies. Unfortunately, the TV cannot get very bright in HDR so it can't deliver the creators' intent. The TV has an IPS panel and the low contrast ratio and poor black uniformity can't display deep blacks in a dark room where HDR is meant to be watched. Unfortunately, the local dimming is ineffective and can't improve the situation.
8.0 HDR Gaming
What it is: HDR Gaming. The TV will be used to play HDR video games using consoles that support it or on current generation gaming PCs. Xbox One S, PS4 Pro, GTX 10 series and AMD RX series graphics cards.
The SM8600 is a great TV for playing HDR games mainly due to the low input lag in HDR mode, and the very fast response time. The TV, however, can't get very bright in HDR to deliver the bright highlights as they should be. Also, the low contrast ratio and poor black uniformity result in blacks that look gray in a dark room.
8.6 PC Monitor
What it is: PC Monitor. The TV will be used as a PC monitor, from 2-3 feet away, either for productivity purposes or gaming. Sharp text is important, as well as a high resolution.
Score components:
This is an excellent TV for use as a PC monitor. It can display the majority of the most common resolutions with proper chroma 4:4:4. The input lag is very low and the TV feels very responsive. Motion looks crisp thanks to the fast response time, and the wide viewing angles help the image look uniform if you sit up close. Finally, the SM8600 has an IPS panel that appears to be immune to permanent burn-in.

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