LG 27GN950-B Monitor Review

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The LG 27GN950-B is a fantastic 4K IPS monitor that has a low input lag, a low response time, and HDR support. But watch out for its poor native contrast ratio and terrible black levels.

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Table of Contents

Product Snapshot


The LG 27GN950-B is a high-end model released in December 2020. Unlike the older LG 27GL850, it features a 4K IPS display that promises to deliver better viewing angles and response time than VA monitors. In addition, LG assures seamless tear-free gaming with this monitor, as it supports all of the VRR methods like adaptive sync, NVIDIA G Sync, and AMD FreeSync Premium Pro. So, it is really well-positioned for PC gamers looking for a 4K monitor with an unrestricted budget. To learn more about reviewers’ opinions, continue reading our LG 27GN950-B review below. And if you need something even more high-end, take a look at our list of the top-ranked computer monitors currently available in the market.


our Verdict

The LG 27GN950-B is a great 4K monitor for those looking for a high-end experience. It offers wide viewing angles, a low response time, low input lag, and HDR playback. Just be aware that it has a poor native contrast ratio and terrible black levels.

ReasonS to Buy

  • Native 4K UHD resolution
  • Expansive viewing angles
  • Extremely low response time
  • Low input lag
  • It is an AMD FreeSync and NVIDIA G Sync compatible monitor
  • High Dynamic Range playback
  • Decent peak brightness for HDR
  • 144 Hz native refresh rate (Overclockable up to 160 Hz)
  • Features a wide color gamut

Reason to Avoid

  • Poor native contrast ratio
  • Terrible black levels
  • Local dimming performs poorly
  • Lackluster display uniformity
  • Severe backlight bleed, clouding, and glows
  • Poor reflection diffusion due to the semi-gloss finish
  • The monitor takes up a lot of space
  • No HDMI 2.1 port

LG 27GN950-B Monitor Specs

HDMI Inputs2
HDR FormatHDR10, HDR600
Max Resolution3840 x 2160 (4k)
Panel TypePanel TypeIPS
Refresh Rate144 Hz
Response TimeResponse Time1 ms
Screen size27"
Sync TechnologySync TechnologyAMD FreeSync, G-Sync

All Specs

Test Results

Brightness (nits)485.92
Contrast Ratio (as ratio, x:1)1,015.675
Color Gamut/Accuracy % (DCI P3 xy)95.85
Color Gamut/Accuracy % (DCI P3 uv)135
Color Gamut % (Adobe RGB Coverage xy)88.15
Color Gamut % (sRGB Coverage xy)111
Color Gamut % (Rec. 2020 Coverage xy)69.4
Color Gamut % (Rec. 709 Coverage xy)0
Input Lag (ms)12.7667
Response Time (ms)4.2
Reflections % (Total Reflections)8.9
Horizontal Viewing Angle (Washout Left)37
Horizontal Viewing Angle (Washout Right)36
Vertical Viewing Angle (Washout Above)34
Vertical Viewing Angle (Washout Below)38

All Tests

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Expert Scores

  • Rtings

    Category Trust Rating

    The LG 27GN950-B is impressive for gaming. It has a high 160Hz refresh rate and… Read More


    Thomas Hervieu
  • Tom’s Hardware

    Category Trust Rating

    One of the fastest 4K monitors at 144 Hz, the LG 27GN950-B delivers accurate color… Read More


    Niels Broekhuijsen
  • Digital Trends

    Category Trust Rating

    The LG 27GN950 is a 4K gaming monitor worthy of the next generation of PC… Read More


    Christian Eberle
  • Display Ninja

    Category Trust Rating

    The LG 27GN950 is the best 4K IPS monitor under $1000 if you need a… Read More


    Rob Shafer

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