Name: LG UltraGear 27G810A-B
Brand: LG

The 27G810A-B lets you keep one screen for two deliberately different pictures. Native 4K is the sensible desktop setting. Switching to Full HD cuts the number of pixels per frame to one quarter and raises the refresh ceiling from 180 to 360 Hz. Whether that switch helps depends on what the computer and the game can actually deliver.

Motion & Gaming

4K at 180 Hz
Full HD at 360 Hz

Try the lower mode first in the competitive title you play most. Watch the frame-rate counter during a busy match, rather than in an empty practice room. If the PC rarely exceeds 180 frames per second, the case for keeping the lower resolution is weak. Return to 4K for text, detailed landscapes and desktop work.

Adaptive Refresh

FreeSync Premium
G-SYNC Compatible
1 ms rated in Faster mode

FreeSync Premium and G-SYNC Compatible support let a compatible graphics card vary the refresh cadence as the frame rate changes. That matters in a demanding 4K game that runs below 180 frames per second. The separate Full HD mode is for a different situation, where the PC can already render far more frames and you are prepared to lose detail to see them. LG’s 1 ms gray-to-gray rating applies to its Faster setting.

Connectivity & Ergonomics

2 HDMI 2.1 inputs
DisplayPort 1.4 with DSC
Height, tilt, swivel and pivot

LG provides two HDMI inputs, DisplayPort and a stand with height, tilt, swivel and pivot adjustment. The panel is about 61 cm wide without the stand. For a monitor arm, it weighs 4.9 kg without the stand and uses a 100 × 100 mm VESA pattern. The stand’s pivot is useful for a second role beside a laptop, even if landscape is the obvious choice during a game.

Display & Color

27-inch IPS
95% DCI-P3
400 nits typical SDR

LG rates the IPS panel at 95% of DCI-P3 and 400 nits for ordinary SDR use. Those figures describe the range of color and brightness that a creator or gamer can expect on paper. The monitor also accepts HDR10. An HDR signal alone tells you little about shadow detail or the brightness of a small highlight, and the ASUS test cannot settle those questions for this LG. A buyer using it for color-critical work would need a measurement of the LG itself.

USB & Laptop Use

USB-B upstream
2 USB-A downstream
No USB-C input

A keyboard and mouse can stay plugged into the monitor, but the hub needs its USB-B upstream cable connected to the computer. HDMI or DisplayPort supplies the picture. A USB-C-only laptop therefore requires a compatible video adapter or dock, an upstream data connection if you want the hub, and its own charger. A desktop with both DisplayPort and USB-A readily supplies the two paths. That difference may matter more than 360 Hz on a desk shared with a work laptop.

Alternatives

The ASUS ROG Strix XG27UCG is another 27-inch dual-mode IPS display. PC Gamer found its native 4K mode better for desktop text and saw a softer Full HD picture that was easier to accept during fast games. Its limits are 160 Hz and 320 Hz, compared with the LG’s 180 Hz and 360 Hz. The observations belong to the ASUS. An exact LG input-lag or motion result cannot be inferred from them. ¹

Verdict

This is an economical use of desk space if you play two distinctly different kinds of game. A buyer who stays at 4K all week should compare ordinary 4K high-refresh monitors. The 360 Hz mode earns its premium only when you will use it.

LG UltraGear 27G810A-B review

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Cons