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Reviewed on May 29, 2019

LG SM8600
TV REVIEW

Usage Ratings - Version 1.3
7.7
Mixed Usage
Value for price beaten by
: Vizio P Series 2018
6.5
Movies
8.0
TV Shows
8.0
Sports
8.6
Video Games
6.5
HDR Movies
8.0
HDR Gaming
8.6
PC Monitor
Type : LED
Sub-Type
:
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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49" 49SM8600
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55" 55SM8600
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Market Context

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

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 LG 55SM8600PUA 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
Maximum Temperature
:
105 °F (41 °C)
Average Temperature
:
92 °F (34 °C)
7.0 Build Quality

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
Native Contrast
:
1176 : 1
Contrast with local dimming
:
1182 : 1

The LG 55SM8600PUA 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
Local Dimming
:
Yes
Backlight
:
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
SDR Real Scene Peak Brightness
:
253 cd/m²
SDR Peak 2% Window
:
104 cd/m²
SDR Peak 10% Window
:
182 cd/m²
SDR Peak 25% Window
:
283 cd/m²
SDR Peak 50% Window
:
282 cd/m²
SDR Peak 100% Window
:
281 cd/m²
SDR Sustained 2% Window
:
103 cd/m²
SDR Sustained 10% Window
:
181 cd/m²
SDR Sustained 25% Window
:
283 cd/m²
SDR Sustained 50% Window
:
281 cd/m²
SDR Sustained 100% Window
:
281 cd/m²
SDR ABL
:
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
HDR Real Scene Peak Brightness
:
308 cd/m²
HDR Peak 2% Window
:
432 cd/m²
HDR Peak 10% Window
:
428 cd/m²
HDR Peak 25% Window
:
377 cd/m²
HDR Peak 50% Window
:
336 cd/m²
HDR Peak 100% Window
:
336 cd/m²
HDR Sustained 2% Window
:
240 cd/m²
HDR Sustained 10% Window
:
270 cd/m²
HDR Sustained 25% Window
:
334 cd/m²
HDR Sustained 50% Window
:
335 cd/m²
HDR Sustained 100% Window
:
335 cd/m²
HDR ABL
:
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
50% Std. Dev.
:
4.707 %
50% DSE
:
0.167 %
5% Std. Dev.
:
0.467 %
5% DSE
:
0.116 %

The LG 55SM8600PUA 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
Color Washout
:
26 °
Color Shift
:
45 °
Brightness Loss
:
30 °
Black Level Raise
:
70 °
Gamma Shift
:
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
Native Std. Dev.
:
2.050 %
Std. Dev. w/ L.D.
:
4.766 %

The LG 55SM8600PUA 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
Screen Finish
:
Semi-gloss
Total Reflections
:
3.0 %
Indirect Reflections
:
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
White Balance dE
:
5.12
Color dE
:
3.47
Gamma
:
2.11
Color Temperature
:
5905 K
Picture Mode
:
Expert (Dark Room)
Color Temp Setting
:
Warm 2
Gamma Setting
:
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
White Balance dE
:
0.62
Color dE
:
0.85
Gamma
:
2.16
Color Temperature
:
6526 K
White Balance Calibration
:
22 point
Color Calibration
:
Yes
Auto-Calibration Function
:
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

The LG 55SM8600PUA 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

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

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

10 4k Input

Native 4k content displays perfectly.

7.8 Color Gamut
Wide Color Gamut
:
Yes
DCI P3 xy
:
85.69 %
DCI P3 uv
:
91.67 %
Rec 2020 xy
:
63.26 %
Rec 2020 uv
:
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
Normalized DCI P3 Coverage ITP
:
77.2 %
10,000 cd/m² DCI P3 Coverage ITP
:
35.0 %
Normalized Rec 2020 Coverage ITP
:
59.3 %
10,000 cd/m² Rec 2020 Coverage ITP
:
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
Color Depth
:
10 Bit
Red (Std. Dev.)
:
0.087 dE
Green (Std. Dev.)
:
0.096 dE
Blue (Std. Dev.)
:
0.075 dE
Gray (Std. Dev.)
:
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
IR after 0 min recovery
:
0.06 %
IR after 2 min recovery
:
0.00 %
IR after 4 min recovery
:
0.00 %
IR after 6 min recovery
:
0.00 %
IR after 8 min recovery
:
0.00 %
IR after 10 min recovery
:
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
Permanent Burn-In Risk
:
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
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
80% Response Time
:
4.2 ms
100% Response Time
:
12.4 ms

The LG 55SM8600PUA 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
Flicker-Free
:
No
PWM Dimming Frequency
:
240 Hz

The LG 55SM8600PUA 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)
Optional BFI
:
Yes
Min Flicker for 60 fps
:
60 Hz
60 Hz for 60 fps
:
Yes
120 Hz for 120 fps
:
Yes
Min Flicker for 60 fps in Game Mode
:
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
Motion Interpolation (30 fps)
:
Yes
Motion Interpolation (60 fps)
:
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
Frame Hold Time @ 24 fps
:
29.3 ms
Frame Hold Time @ 60 fps
:
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
Judder-Free 24p
:
Yes
Judder-Free 24p via 60p
:
Yes
Judder-Free 24p via 60i
:
No
Judder-Free 24p via Native Apps
:
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
Native Refresh Rate
:
120 Hz
Variable Refresh Rate
:
No
4k VRR Maximum
:
N/A
4k VRR Minimum
:
N/A
1080p VRR Maximum
:
N/A
1080p VRR Minimum
:
N/A
1440p VRR Maximum
:
N/A
1440p VRR Minimum
:
N/A
VRR Supported Connectors
:
N/A

The LG 55SM8600PUA 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

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
1080p @ 60 Hz
:
14.0 ms
1080p @ 60 Hz Outside Game Mode
:
34.6 ms
1440p @ 60 Hz
:
14.0 ms
4k @ 60 Hz
:
14.0 ms
4k @ 60 Hz + 10 bit HDR
:
13.8 ms
4k @ 60 Hz @ 4:4:4
:
30.5 ms
4k @ 60 Hz Outside Game Mode
:
34.7 ms
4k @ 60 Hz With Interpolation
:
82.3 ms
8k @ 60 Hz
:
N/A
1080p @ 120 Hz
:
6.8 ms
1440p @ 120 Hz
:
6.8 ms
4k @ 120 Hz
:
N/A
1080p with Variable Refresh Rate
:
N/A
1440p with VRR
:
N/A
4k with VRR
:
N/A
8k with VRR
:
N/A
Auto Low Latency Mode (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
1080p @ 60 Hz @ 4:4:4
:
Yes
1080p @ 120 Hz
:
Yes (native support)
1440p @ 60 Hz
:
Yes (forced resolution required)
1440p @ 120 Hz
:
Yes (native support)
4k @ 60 Hz
:
Yes
4k @ 60 Hz @ 4:4:4
:
Yes
4k @ 120 Hz
:
No
8k @ 30 Hz or 24 Hz
:
No
8k @ 60 Hz
:
No

The LG 55SM8600PUA 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
:
Yes
HDR10+
:
No
Dolby Vision
:
Yes
HLG
:
Yes
3D
:
No
HDMI 2.0 Full Bandwidth
:
Yes (HDMI 1,2,3,4)
HDMI 2.1
:
No
CEC : Yes
HDCP 2.2 : Yes (HDMI 1,2,3,4)
USB 3.0
:
No
Variable Analog Audio Out : No
Wi-Fi Support : Yes (2.4 GHz, 5 GHz)

It's unclear if the LG 55SM8600PUA 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
ARC
:
Yes (HDMI 2)
eARC support
:
No
Dolby Atmos via TrueHD via eARC
:
No
DTS:X via DTS-HD MA via eARC
:
No
5.1 Dolby Digital via ARC
:
Yes
5.1 DTS via ARC
:
Yes
5.1 Dolby Digital via Optical
:
Yes
5.1 DTS via Optical
:
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

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
Low-Frequency Extension
:
151.02 Hz
Std. Dev. @ 70
:
3.48 dB
Std. Dev. @ 80
:
4.20 dB
Std. Dev. @ Max
:
7.06 dB
Max
:
84.8 dB SPL
Dynamic Range Compression
:
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
Weighted THD @ 80
:
0.184
Weighted THD @ Max
:
0.955
IMD @ 80
:
8.52 %
IMD @ Max
:
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

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
Ease of Use
:
Easy
Smoothness
:
Average
Time Taken to Select YouTube
:
2 s
Time Taken to Change Backlight
:
9 s
Advanced Options
:
Many

The LG 55SM8600PUA 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
Ads
:
Yes
Opt-out
:
No
Suggested Content in Home
:
Yes
Opt-out of Suggested Content
:
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
App Selection
:
Many
App Smoothness
:
Average
Cast Capable
:
Yes
USB Drive Playback
:
Yes
USB Drive HDR Playback
:
Yes
HDR in Netflix
:
Yes
HDR in YouTube
:
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
Size
:
Large
Voice Control
:
Many Features
CEC Menu Control
:
Yes
Other Smart Features
:
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
Acts as the Remote
:
Yes
Directly Launches Apps and Inputs
:
Both
Inputs Text in YouTube
:
No
Inputs Text in Netflix
:
No
Streams Device Files
:
Yes
Controls TV Settings
:
No
Voice Control
:
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.

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

The Samsung RU8000 and the LG SM8600 use different technologies, each with their 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 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.

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.

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.

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.

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.

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.

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Conclusion
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7.7 Mixed Usage
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
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
The LG 55SM8600PUA 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
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
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
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
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
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.