Samsung NU7100 TV Review

Tested using Methodology v1.3
Updated May 11, 2018 at 11:27 am
Samsung NU7100 Picture
Test Methodology v1.3
Mixed Usage
Value for price beaten by
: no price info
TV Shows
Video Games
HDR Movies
HDR Gaming
PC Monitor
This TV was replaced by the Samsung RU7100
Type LED
Resolution 4k

The Samsung NU7100 is a decent 4k LED TV. It has decent picture quality with a good native contrast ratio but lacks more advanced features to improve the dark room performance such as local dimming. It has extremely low input lag which is excellent for gamers but the response time is only decent so some blur is visible behind fast moving objects. When viewed at an angle the image also loses accuracy, so the best picture is reserved for those directly in front of the TV.

Our Verdict

7.5 Mixed Usage

Decent TV for mixed usage. The TV is best suited for dark room viewing, as the screen is ineffective at overcoming glare. It has a great low input lag perfect for gaming but poor color volume and a limited color gamut, so HDR content doesn't pop like it should. Unfortunately, the viewing angle is not very wide.

See our Mixed Usage recommendations
6.8 Movies

The Samsung NU7100 is a decent TV for watching movies. Blacks are decent and uniform; the TV is best suited for dark room viewing, although the lack of a local dimming feature could be an issue for some people.

See our Movies recommendations
7.5 TV Shows

Great for watching TV in a room that isn't too bright, as the TV isn't very good at overcoming glare. Decent picture quality and good uniformity for sports. It also has a good assortment of apps available for streaming TV.

See our TV Shows recommendations
7.2 Sports

Decent TV for sports. There is minor dirty screen effect, but it shouldn't be too noticeable. Decent motion handling, but some people might notice some persistence with fast motion.

See our Sports recommendations
8.3 Video Games

Great TV for gaming, mainly due to the exceptionally low input lag. Decent response time, but faster games might suffer from some motion blur.

See our Video Games recommendations
6.9 HDR Movies

Decent TV for watching movies in HDR. It isn't very bright and is best suited for dark room viewing. It has a limited color gamut and poor color volume so HDR content won't pop as much as the content creators intended.

See our HDR Movies recommendations
7.8 HDR Gaming

Great TV for HDR Gaming. It has excellent low input lag and a decent response time. It isn't very bright and has a limited color gamut and volume so HDR games don't pop as much as they should.

See our HDR Gaming recommendations
8.1 PC Monitor

Good TV for use as a PC Monitor. It has exceptionally low input lag and chroma 4:4:4 is properly supported. Unfortunately, the viewing angle isn't very wide.

See our PC Monitor recommendations
  • 7.5 Mixed Usage
  • 6.8 Movies
  • 7.5 TV Shows
  • 7.2 Sports
  • 8.3 Video Games
  • 6.9 HDR Movies
  • 7.8 HDR Gaming
  • 8.1 PC Monitor
  • Excellent low input lag
  • Good uniformity
  • 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.
  2. Update 6/15/2018: The TV's picture settings have been reset and the contrast ratio has been remeasured at a higher value of 5397:1. It is likely that the calibration raised black levels slightly, reducing the native contrast ratio. The new measurement is in-line with other Samsung TVs like the NU7300.

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Test Results

Market Context
Curved No

The design of the Samsung NU7100 is great. It incorporates design features found in higher-end models like the similar legs to the Q8FN (without the silver finish.) and the same back as the NU8000


The stand is modern and sturdy. It is wide enough to fit a soundbar in front.

Footprint of the 55" TV stand: 37.2" x 10.3"

Wall Mount VESA 200x200

The back of the TV has the same textured finish found in this year's NU8000. There are a few cable management tracks that span the entire width of the back of the TV. Also the TV comes with two clips that attach to the stand legs to also assist with cable management.

Borders 0.55" (1.4 cm)

The borders of the Samsung UN55NU7100 are simple with a textured plastic finish and have average thickness.

Max Thickness 2.24" (5.7 cm)

The TV looks thin when viewed from the side and resembles the also new NU8000. It too lacks the OneConnect mini, saving you the trouble of where to place it when wall mounting the TV. At the same time, changing connections is not a as simple as with the OneConnect.

Maximum Temperature
108 °F (42 °C)
Average Temperature
91 °F (33 °C)

The NU7100 gets warm along the bottom edge of the panel where the LEDs are. This is common for many Samsung models and should not be a problem.

Build Quality

The build quality is ok. It feels solid even though it is almost entirely made from plastic.

Picture Quality
Picture Quality
Native Contrast
5397 : 1
Contrast with local dimming

The contrast on the TV is great, and in-line with other Samsung TVs like the NU7300. This is good for producing deep dark scenes.

Update 06/15/2018: We have reset the TV and retested the native contrast ratio, and it is a bit higher. It is likely that the calibration raised the black levels slightly, lowering the previously measured contrast ratio.

Picture Quality
Local Dimming
Local Dimming

The Samsung NU7100 does not have a local dimming feature. The above video is provided for reference only.

Picture Quality
SDR Peak Brightness
SDR Real Scene Peak Brightness
261 cd/m²
SDR Peak 2% Window
160 cd/m²
SDR Peak 10% Window
294 cd/m²
SDR Peak 25% Window
292 cd/m²
SDR Peak 50% Window
291 cd/m²
SDR Peak 100% Window
291 cd/m²
SDR Sustained 2% Window
158 cd/m²
SDR Sustained 10% Window
292 cd/m²
SDR Sustained 25% Window
292 cd/m²
SDR Sustained 50% Window
291 cd/m²
SDR Sustained 100% Window
291 cd/m²

Decent peak brightness, good enough for a dimly lit room but the Samsung 55NU7100 can't get bright enough to overcome glare. It isn't as bright as similar models from last year, like the MU6100 or MU6500

Picture Quality
HDR Peak Brightness
HDR Real Scene Peak Brightness
261 cd/m²
HDR Peak 2% Window
165 cd/m²
HDR Peak 10% Window
309 cd/m²
HDR Peak 25% Window
307 cd/m²
HDR Peak 50% Window
307 cd/m²
HDR Peak 100% Window
304 cd/m²
HDR Sustained 2% Window
164 cd/m²
HDR Sustained 10% Window
303 cd/m²
HDR Sustained 25% Window
302 cd/m²
HDR Sustained 50% Window
302 cd/m²
HDR Sustained 100% Window
302 cd/m²

Disappointing HDR peak brightness. It is fairly consistent across all input windows. Small highlights in dark scenes are dimmed by the TV's algorithms, as shown by our 2% window test. Like with SDR, the HDR performance is worse than last year's Samsung lineup. Similar performance to the budget-level LG UK6300.

Picture Quality
Gray Uniformity
50% Std. Dev.
3.538 %
50% DSE
0.153 %
5% Std. Dev.
1.131 %
5% DSE
0.133 %

The TV has a good gray uniformity. In the 50% gray test picture you can notice it is a little darker on the sides and especially on the corners. This fades as we move towards the center of the screen where things are pretty even and thus, the minor dirty screen effect is hardly noticeable. This is very good for those who will use the TV mostly for sports viewing.
The 5% gray uniformity is very good with no noticeable brighter spots.

Picture Quality
Viewing Angle
Color Washout
25 °
Color Shift
18 °
Brightness Loss
36 °
Black Level Raise
17 °
Gamma Shift
18 °

The Samsung NU7100 has a poor viewing angle, but it is better than last year's MU6300. The black levels shift dramatically when viewing even slightly off center.

Picture Quality
Black Uniformity
Native Std. Dev.
0.519 %
Std. Dev. w/ L.D.

The Samsung NU7100 has an excellent black uniformity, similar to the 2017 MU6300 and one of the best among LED TVs. The are no clouding issues and black looks very uniform. As a result, dark scenes in movies look great.

Picture Quality
Screen Finish
Total Reflections
5.8 %
Indirect Reflections
0.6 %

The TV has good reflection handling, but the semi-gloss finish can't overcome glare in a brightly-lit room. It has a similar finish to the MU6300 and MU6500.

Picture Quality
Pre Calibration
White Balance dE
Color dE
Color Temperature
6313 K
Picture Mode
Color Temp Setting
Warm 2
Gamma Setting
BT.1886 +2, Brightness +2

Out of the box color accuracy is decent. The Movie picture mode provided the most accurate settings. White balance and color dE are a bit high but most people won't notice a huge difference. Gamma is high, and color temperature is a bit warm.

Update 04/12/2019: This TV was incorrectly measured with Brightness +2, instead of at 0. This only has a small impact on the results (slightly dimmer dark scenes below about 30 IRE) and so we don't plan to retest it.

Picture Quality
Post Calibration
White Balance dE
Color dE
Color Temperature
6565 K
White Balance Calibration
20 point
Color Calibration
Auto-Calibration Function

After calibration with the Movie picture mode, the white balance is almost perfect and colors are much better. Gamma follows our target 2.2 almost perfectly, although the color temperature is a little off from our target of 6500K.

See our recommended settings here.

Picture Quality
480p Input

The Samsung NU7100 displays older 480p content well, without any issues or obvious artifacts.

Picture Quality
720p Input

720p input is displayed properly without any obvious scaling artifacts

Picture Quality
1080p Input

1080p content, like from a non 4k Blu-ray or game console is displayed well and looks almost as good as native 4k content.

Picture Quality
4k Input

Native 4k content is displayed well on the TV.

Picture Quality
Color Gamut
Wide Color Gamut
DCI P3 xy
74.05 %
DCI P3 uv
80.84 %
Rec 2020 xy
53.25 %
Rec 2020 uv
59.49 %

The NU7100 supports a standard color gamut only and is best suited for SDR content. Like the 2017 MU6500, red and green fall quite short of their HDR targets.

The 'Movie' Picture mode is the most accurate, but it doesn't follow our PQ curve. The brightness rolls off gradually as the TV gets closer to its peak brightness. The PC and Game EOTFs are very similar to 'Movie', but also don't follow our target very closely.

Picture Quality
Color Volume
Normalized DCI P3 Coverage ITP
62.9 %
10,000 cd/m² DCI P3 Coverage ITP
21.7 %
Normalized Rec 2020 Coverage ITP
48.9 %
10,000 cd/m² Rec 2020 Coverage ITP
16.9 %

Disappointing color volume, mainly due to the limited color gamut of the TV. It is unable to produce deep, dark colors, and it is limited in its ability to produce bright saturated colors like those in a sunset or bright outdoor scene.

Picture Quality
Color Depth
10 Bit
Red (Std. Dev.)
0.110 dE
Green (Std. Dev.)
0.127 dE
Blue (Std. Dev.)
0.096 dE
Gray (Std. Dev.)
0.100 dE

The TV displays our test pattern well but in real-world tests, there are small points of banding in large areas of similar color.

Picture Quality
Temporary Image Retention
IR after 0 min recovery
0.00 %
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 no temporary image retention on the NU7100.

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

We don't expect the TV to experience burn-in, as the VA panel in our long-term test appears immune.

Picture Quality
Response Time
80% Response Time
9.5 ms
100% Response Time
24.1 ms

Decent response time. In dark scenes like our 20% test slide the 100% transition is very slow and there is some motion trail.

It is slightly worse than last year's MU6300, and similar to the MU7000. While it isn't bad, competing TVs from other brands like the LG UK6300 offer better motion performance.

Most of the blur in the above photo is due to duplications caused by the backlight flicker.

Similar to the Q8FN, the flicker varies depending on settings.

PWM Dimming Frequency
240 Hz

The Samsung NU7100 uses PWM to dim the backlight except when at 100%. It flickers at a high frequency (240Hz), but due to pwm at lower brightness levels, the flicker becomes more noticeable. This year's model is an improvement over the MU6300 with its 120Hz flicker, but it is still not as good as the Sony X850F

When Auto Motion Plus is enabled with the slider set to 0, the backlight flickers at 120Hz, as seen here. This creates a duplicated motion trail similar to when motion interpolation is enabled.

Similar to the Q8FN, the flicker varies depending on settings. There is almost no flicker in 'Movie' mode with the backlight at 100% and 'Auto Motion Plus' set to Custom.

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 TV has an optional black frame insertion feature to help motion appear smoother. When enabled, this feature reduces the flicker frequency to 60Hz. As on all Samsung TVs, this is enabled by setting 'Auto Motion Plus' to Custom, and enabling 'LED Clear Motion'.

New to this year's NU7100 is the ability to keep the 120Hz flicker when in game mode. This can help motion in games appear smoother if you don't mind the visible flicker. This is automatically activated when you are in Game Mode, as there is no other option to enable flicker.

Similar to the Q8FN, the flicker varies depending on settings.

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

The TV is able to interpolate 30 fps content up to 60 fps, the native refresh rate of the panel. This can help motion appear more fluid, but some people don't like the Soap Opera Effect this causes. To enable it, set 'Auto Motion Plus' to Custom, and adjust the 'Judder Reduction' slider to your preference.

In motion scenes there are visible artifacts, when the motion gets too intense the TV stops interpolating.

Similar to the Q8FN, the flicker varies depending on settings.

Frame Hold Time @ 24 fps
17.6 ms
Frame Hold Time @ 60 fps
0.0 ms

The Samsung UN55NU7100 is great at displaying content without stutter, even for low frame rate movies. The higher response time helps the transition between frames appear smoother.

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

The TV cannot remove judder from 24 fps content played through a 60p/i cable box, or from native 24 fps content played from a Blu-ray. Most people aren't very sensitive to judder and won't see it.

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 NU7100 does not support any of the variable refresh rate technologies like AMD's Freesync. This was tested with an Xbox One S and with a Radeon RX 580.

Input Lag
1080p @ 60 Hz
13.7 ms
1080p @ 60 Hz Outside Game Mode
76.6 ms
1440p @ 60 Hz
4k @ 60 Hz
13.4 ms
4k @ 60 Hz + 10 bit HDR
13.4 ms
4k @ 60 Hz @ 4:4:4