Samsung NU6900 TV Review

Updated Aug 31, 2018 at 08:11 am
Samsung NU6900 Picture
Usage Ratings - Version 1.3
Mixed Usage
Value for price beaten by
: LG UM7300
TV Shows
Video Games
HDR Movies
HDR Gaming
PC Monitor
Type LED
Resolution 4k

The Samsung NU6900 is a decent entry-level 4K LCD TV. It has an okay picture quality with a high native contrast ratio but lacks other more advanced features like local dimming to enhance image quality. It can't get very bright and does not have a wide color gamut, so it cannot deliver good HDR performance. It has a low input lag and a fast response time which are good for games, but motion handling is only mediocre.

Our Verdict

7.4 Mixed Usage

The Samsung NU6900 is a decent TV for mixed usage. It has an ordinary picture quality with low input lag that makes it responsive, which is good for gaming, and an excellent native contrast ratio that allows it to display deep blacks in a dark room. It has decent reflection handling, but since it can't get very bright, it is not suitable for very bright rooms.

See our Mixed Usage recommendations
6.7 Movies

This TV has a mediocre performance in movies. Although it has an excellent native contrast ratio, it does not have features like local dimming to improve picture quality in a dark room where movies are meant to be watched. Furthermore, the mediocre motion handling performance will not make movie enthusiasts happy.

See our Movies recommendations
7.5 TV Shows

The Samsung NU6900 is a good TV for watching TV shows. It has decent reflection handling and can get decently bright for an average lit room. The NU6900 is very good at upscaling cable content and will keep most TV show enthusiasts happy. It also has an option to add motion interpolation for those who enjoy the soap opera effect.

See our TV Shows recommendations
7.3 Sports

The Samsung NU6900 is a decent TV for watching sports. It has decent reflection handling so you can place it in an average lit room with a few light sources, and a very fast response time so that fast action has very little blur. The gray uniformity is decent and it is unlikely that you will notice any dirty screen effect when watching sports. Unfortunately, the viewing angles are bad so it is not suitable for wide seating arrangements.

See our Sports recommendations
8.2 Video Games

This is a good TV for playing video games. It has a very low input lag which makes it very responsive, and a very fast pixel response time so that fast action has little blur. It supports flicker to make the image crispier, but unfortunately, it does not have support for any variable refresh rate technology to improve the gaming experience further.

See our Video Games recommendations
6.8 HDR Movies

This is a decent TV for watching HDR movies. The TV has excellent native contrast ratio but lacks local dimming to make blacks deeper and improve picture quality in a dark room. Furthermore, it cannot get very bright and does not have a wide color gamut to make highlights pop and deliver the content as the director intended.

See our HDR Movies recommendations
7.7 HDR Gaming

The Samsung NU6900 is a good TV for HDR Gaming. This is due mainly to the very low input lag at 4k @ 60Hz + HDR and the fast response time that leaves only a little blur in fast action. Unfortunately, the TV cannot display HDR content as the director intended as it cannot get very bright and does not have a wide color gamut. Therefore, although it will be responsive when gaming in HDR content, the picture quality will not be what you would expect.

See our HDR Gaming recommendations
8.0 PC Monitor

The Samsung NU6900 is a good TV for use as a PC monitor. It has low input lag, a very fast response time and can display most common resolutions. It supports chroma 4:4:4 and this mean that you will get a clear image when you use it as a PC. Unfortunately, the viewing angles are bad and if you sit close to the screen, the edges will look darker.

See our PC Monitor recommendations
  • 7.4 Mixed Usage
  • 6.7 Movies
  • 7.5 TV Shows
  • 7.3 Sports
  • 8.2 Video Games
  • 6.8 HDR Movies
  • 7.7 HDR Gaming
  • 8.0 PC Monitor
  • High native contrast
  • Low input lag
  • Only 2 HDMI ports
  • Limited HDR capabilities
  • Picture quality degrades when viewed at an angle
  1. Update 2/28/2019: Converted to Test Bench 1.3. Learn more about our versioned test bench system here.

Check Price

43" UN43NU6900
50" UN50NU6900
55" UN55NU6900
65" UN65NU6900
75" UN75NU6900

Test Results

Curved No

The design of the Samsung NU6900 is excellent and very similar to the higher end model NU7100. The TV casing is made of plastic but this does not look bad. The stand supports the TV well and the TV is very thin. If wall mounted, it will not protrude much. The build quality is decent and should not cause any issues.  


The stand of the Samsung NU6900 is plastic and supports the TV well. It is slightly different from the stand of the NU7100. Unfortunately, it is not very tall and you might block a small part of the bottom edge of your screen if you place a soundbar in front of it.

Footprint of the 55" TV stand: 39.75" x 9.5"

Wall Mount VESA 200x200

The back of the screen is almost identical to the Samsung NU7100. It is plastic and very plain. There is one vent on the top of the back and some grooves across the bottom edge for the cable management.

All inputs are facing sideways and should not be hard to reach if you wall mount the TV. Unfortunately, there are only 2 HDMI ports and that limits the number of devices you can connect simultaneously to the TV.

Borders 0.55" (1.4 cm)

The borders are of average thickness with a thick bezel. They are made entirely out of plastic with a gloss finish and fingerprints show easily.

Max Thickness 2.36" (6.0 cm)

One of the good aspects of this TV's design is its thickness, it is fairly thin and will not protrude much if wall mounted.

Maximum Temperature
104 °F (40 °C)
Average Temperature
90 °F (32 °C)

The TV gets fairly warm at the bottom edge where the array of LEDs is. This, however, should not be an issue.

Build Quality

The build quality of the NU6900 is okay. There are no gaps and you should have no issues with it but the plastic feeling is apparent everywhere with this TV.

Picture Quality
Picture Quality
Native Contrast
6107 : 1
Contrast with local dimming

The native contrast of the Samsung NU6900 is excellent. It is one of the highest native contrast ratios we've measured so far in LED TVs and in the same ballpark with more expensive models like the Samsung Q7FN. Unfortunately, the TV does not support a local dimming feature to further improve contrast.

Picture Quality
Local Dimming
Local Dimming

Just like the higher-end model Samsung NU7100, the NU6900 does not support local dimming. The above video is provided for reference only.

Picture Quality
SDR Peak Brightness
SDR Real Scene Peak Brightness
273 cd/m²
SDR Peak 2% Window
238 cd/m²
SDR Peak 10% Window
310 cd/m²
SDR Peak 25% Window
308 cd/m²
SDR Peak 50% Window
307 cd/m²
SDR Peak 100% Window
306 cd/m²
SDR Sustained 2% Window
237 cd/m²
SDR Sustained 10% Window
308 cd/m²
SDR Sustained 25% Window
307 cd/m²
SDR Sustained 50% Window
306 cd/m²
SDR Sustained 100% Window
306 cd/m²

Decent SDR peak brightness. The Samsung NU6900 cannot get very bright in SDR to overcome glare. It is more suitable for dimmer rooms, very similar to this year's NU7100, but less bright than last years MU6100 or MU6300. Even though the brightness is mostly consistent, in dark scenes, small highlights are not as bright as we can see from our 2% window and this is due to Samsung's CE (frame) dimming.

Picture Quality
HDR Peak Brightness
HDR Real Scene Peak Brightness
270 cd/m²
HDR Peak 2% Window
181 cd/m²
HDR Peak 10% Window
320 cd/m²
HDR Peak 25% Window
318 cd/m²
HDR Peak 50% Window
318 cd/m²
HDR Peak 100% Window
317 cd/m²
HDR Sustained 2% Window
180 cd/m²
HDR Sustained 10% Window
315 cd/m²
HDR Sustained 25% Window
314 cd/m²
HDR Sustained 50% Window
314 cd/m²
HDR Sustained 100% Window
314 cd/m²

The HDR peak brightness of this NU6900 is disappointing. Although it is consistent across most input windows, it's just not enough to deliver the directors intent. Small highlights in dark scenes get crushed. The TV has similar performance to the budget LG UK6300 and its performance, just like the NU7100, is worse than last year's Samsung lineup.

Picture Quality
Gray Uniformity
50% Std. Dev.
4.226 %
50% DSE
0.158 %
5% Std. Dev.
1.368 %
5% DSE
0.120 %

The gray uniformity of the Samsung NU6900 is decent. Although the corners are slightly darker, the center of the image is relatively clear and it is unlikely that you will notice any dirty screen effect when watching sports. This performance is similar to higher-end Samsung models like the NU7100.

In darker shades of gray, the results are better and only very few people might notice any shades on the screen.

Picture Quality
Viewing Angle
Color Washout
26 °
Color Shift
16 °
Brightness Loss
36 °
Black Level Raise
9 °
Gamma Shift
23 °

Bad viewing angles for the Samsung NU6900, an almost identical result with that of the NU7100. Unfortunately, small movements off the center axis and the picture fades to gray as blacks become more intense. This is an expected behavior of VA-panels.

Picture Quality
Black Uniformity
Native Std. Dev.
0.681 %
Std. Dev. w/ L.D.

Excellent black uniformity for this Samsung NU6900. In a dark room, blacks look great and will add points to the picture quality. The black uniformity is even better than more expensive models like the Samsung Q8FN.

Picture Quality
Screen Finish
Total Reflections
6.1 %
Indirect Reflections
0.7 %

Decent reflection handling, although towards the lower end of the scores. Looking at this years' Samsung models, only the NU7300 and NU8500 are slightly worse. The semi-gloss filter diffuses reflections across the screen thus diminishing their intensity. This is good for average lit rooms but in very bright rooms, it can be distracting.

Picture Quality
Pre Calibration
White Balance dE
Color dE
Color Temperature
6765 K
Picture Mode
Color Temp Setting
Warm 2
Gamma Setting
BT.1886 0, Brightness +1

Excellent out of the box color accuracy for the NU6900. The second best of the Samsung models we've tested thus far, right behind last year's Samsung MU8000 and better than this years best Samsung Q6FN.

The Picture Mode with the best results is the 'Movie'. White balance dE and the color dE are low making it hard to detect any inaccuracies. The color temperature is slightly colder than our 6500 K target, and the average gamma is not far from our 2.2 target. However, the gamma curve is not following closely our target curve.

Picture Quality
Post Calibration
White Balance dE
Color dE
Color Temperature
6507 K
White Balance Calibration
10 point
Color Calibration
Auto-Calibration Function

Almost perfect color accuracy after calibration for this Samsung UN55NU6900, better than this years' best Samsung Q6FN. We performed the calibration using a 100% windows instead of the 18% size window. The white balance calibration was done using the 10 point grayscale and was performed without any issues. Changing the values through the color space management did not improve results and thus most of the correction of the color dE came from the correction of the white balance, which is typical for Samsung TVs. After calibration, it's almost impossible to detect gray inaccuracies and the color inaccuracies left behind will be hard to spot even by professionals. The gamma curve was corrected and the color temperature was at our target of 6500 K.

You can see our recommended settings here.

Picture Quality
480p Input

Lower resolution 480p content like DVDs is upscaled well, with no obvious artifacts or quality issues.

Picture Quality
720p Input

720p content is displayed well with no obvious issues.

Picture Quality
1080p Input

1080p content such as Blu-rays or game consoles are upscaled well.

Picture Quality
4k Input

Native 4k content is displayed without any issues.

Picture Quality
Color Gamut
Wide Color Gamut
DCI P3 xy
73.70 %
DCI P3 uv
79.14 %
Rec 2020 xy
52.88 %
Rec 2020 uv
57.68 %

This TV does not have a wide color gamut. Just like the Samsung NU7100, the NU6900 is best suited for SDR content as it cannot display saturated colors very well. In the 'Movie' Picture Mode that gives the best results in HDR, the EOTF curve follows closely the target PQ curve until the TV gets closer to its peak brightness when it quickly starts to roll off. The PC and Game mode EOTFs are very similar to 'Movie'.

If while watching an HDR movie or while playing an HDR game you find the image too dark, you can set Contrast Enhancer to 'High', or raise the Gamma. Here is the EOTF with both Contrast Enhancer set to 'High' and with a Gamma correction of '+3'.

Picture Quality
Color Volume
Normalized DCI P3 Coverage ITP
64.8 %
10,000 cd/m² DCI P3 Coverage ITP
21.1 %
Normalized Rec 2020 Coverage ITP
46.9 %
10,000 cd/m² Rec 2020 Coverage ITP
15.3 %

Disappointing color volume on the NU6900, just like the NU7100. The limited color gamut does not allow the TV to display vivid colors in a wide range of brightness levels so HDR looks a lot like SDR.

Picture Quality
Color Depth
10 Bit
Red (Std. Dev.)
0.107 dE
Green (Std. Dev.)
0.133 dE
Blue (Std. Dev.)
0.084 dE
Gray (Std. Dev.)
0.096 dE

The Samsung NU6900 displays our test pattern well with some banding in the darker colors, with green being the worst. In real-world when the image displays a large area of similar color, some people will notice small points of banding.

Picture Quality
Temporary Image Retention
IR after 0 min recovery
0.02 %
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 %

Minimal signs of temporary image retention only immediately after our 10-minute test and this is not an issue.

Picture Quality
Permanent Burn-In Risk
Permanent Burn-In Risk

We don't expect VA panels to experience permanent image retention, as the VA panel in our long-term test appears immune.

Picture Quality
Response Time
80% Response Time
7.7 ms
100% Response Time
16.2 ms

The Samsung UN55NU6900 has a fast response time, better than more premium model NU7100, and very similar to last year's MU6300.

PWM Dimming Frequency
120 Hz

The TV dims without much flicker for Backlight setting from '50' to '25'. Then it uses PWM flicker to dim for Backlight setting from '24' to '0'.

When the Backlight is set between '50' and '25' you will not notice any flicker, but instead you will notice more motion blur. As you lower the Backlight from '24' to '0', flickering will intensify and you will notice less blur along with the lower levels of brightness. Most people will not be bothered by the 120Hz flicker, but more sensitive people might be. During motion this flicker causes double image artifacts, as seen in our Motion Blur photo.

Black Frame Insertion (BFI)
Optional BFI
Min Flicker for 60 fps
60 Hz
60 Hz for 60 fps
120 Hz for 120 fps
Min Flicker for 60 fps in Game Mode
120 Hz

The Samsung NU6900 allows you to reduce the flicker frequency to 60 Hz, to reduce persistence blur. As in all Samsung models, to activate it you must set LED Clear Motion to 'Custom', and enable LED Clear Motion. You cannot activate 60 Hz black frame insertion when in 'Game' mode so the only flicker will come from the 120Hz native flicker in the Backlight levels of less than 24.

Note that when you enable the BFI, the perceived brightness of the TV is reduced no matter the Backlight levels.

Motion Interpolation
Motion Interpolation (30 fps)
Motion Interpolation (60 fps)

The Samsung NU6900 can interpolate 30 fps content up to 60 fps. Motion appears more fluid but it introduces some 'Soap Opera Effect' that some people do not like. To enable interpolation, set Auto Motion Plus to 'Custom', and adjust the Judder Reduction slider to your preference.

The TV stops interpolating when the motion gets too intense just like Samsung NU7100.

Frame Hold Time @ 24 fps
25.5 ms
Frame Hold Time @ 60 fps
0.5 ms

This TV is good at displaying content without stutter. Fast action looks smooth, due to the image blur. When watching movies, especially while displaying slow panning shots, the fast response time does not create enough blur and some stutter might be visible.

24p Judder
Judder-Free 24p
Judder-Free 24p via 60p
Judder-Free 24p via 60i
Judder-Free 24p via Native Apps

The NU6900 does not have any option to remove 24p judder from movies. This is typical of the 2018 lower end Samsung models like the NU7100.

Variable Refresh Rate
Native Refresh Rate
60 Hz
Variable Refresh Rate
G-SYNC Compatible
4k VRR Maximum
4k VRR Minimum
1080p VRR Maximum
1080p VRR Minimum
1440p VRR Maximum
1440p VRR Minimum
VRR Supported Connectors

The Samsung NU6900 does not support any variable refresh rate technology.

Input Lag
1080p @ 60 Hz
22.8 ms
1080p @ 60 Hz Outside Game Mode
55.6 ms
1440p @ 60 Hz
4k @ 60 Hz
22.5 ms
4k @ 60 Hz + 10 bit HDR
22.6 ms
4k @ 60 Hz @ 4:4:4
37.0 ms
4k @ 60 Hz Outside Game Mode
38.3 ms
4k @ 60 Hz With Interpolation
38.3 ms
8k @ 60 Hz
1080p @ 120 Hz
1440p @ 120 Hz
4k @ 120 Hz
1080p with Variable Refresh Rate
1440p with VRR
4k with VRR
8k with VRR
Auto Low Latency Mode (ALLM)

The Samsung NU6900 has a remarkably low input lag, but not as good as the NU7100 or the LG UK6300. The input lag of the TV is slightly higher than last years MU6300.

Supported Resolutions
1080p @ 60 Hz @ 4:4:4