Monitors · 2026 · LG

LG UltraGear 27G810A-B

Name: LG UltraGear 27G810A-B
Brand: LG

The LG UltraGear 27G810A-B is a 27-inch IPS gaming monitor that runs at 180 Hz in 4K and 360 Hz in Full HD with Dual Mode. It offers DisplayHDR 400, 95% DCI-P3, two HDMI 2.1 ports and DisplayPort 1.4; there is no USB-C and no speakers. Owner reviews praise text clarity, while some find brightness lacking.

27G810A-B, a 27-inch 4K IPS gaming monitor (black). 4K 240 Hz Dual Mode models and the 32GR93U are separate products.

Specifications

Specification	Value
Panel	27-inch IPS; 3840 × 2160; 16:9 IPS panels offer wide viewing angles and consistent colour; black level stays behind OLED and VA panels.
Pixel density	Pixel pitch 0.1554 mm (about 163 ppi) A small pixel pitch makes text sharper; 4K at 27 inches makes interface elements smaller.
Refresh rate	180 Hz at 4K; 360 Hz at Full HD with Dual Mode Dual Mode lowers the resolution to Full HD to allow a higher refresh rate; the image is less sharp in that mode.
Response time	1 ms GtG (at the Faster setting) LG gives this figure for the fastest response time setting; it gives no figure for other settings.
Brightness and contrast	Typical 400 cd/m² (minimum 320); contrast 1000:1 1000:1 contrast is typical for IPS; blacks can look grey in a dark room.
HDR	HDR10; VESA DisplayHDR 400 DisplayHDR 400 is VESA’s lowest HDR certification tier; HDR content plays but bright highlights stay limited.
Colour	DCI-P3 95% (typical, CIE1976); 1.07 billion colours; factory calibration DCI-P3 coverage describes how much of the wide colour space used in films and games can be shown.
Sync	NVIDIA G-Sync Compatible, AMD FreeSync, VESA Adaptive-Sync Variable refresh matches the screen to the graphics card’s frame rate, reducing tearing and stutter.
Video inputs	2 HDMI 2.1, 1 DisplayPort 1.4 (DSC) DSC uses visually lossless compression to fit a 4K 180 Hz signal into DisplayPort 1.4 bandwidth.
USB	1 USB 3.0 upstream, 2 USB 3.0 downstream; no USB-C The USB ports act as a hub; no USB-C connection for video or charging is listed.
Audio	Headphone out; DTS Headphone:X; no built-in speakers listed Headphones or external speakers are needed for sound.
Stand	Height, tilt, swivel and pivot adjustment; VESA 100 × 100 Pivot lets the screen be used in portrait; VESA 100 × 100 fits standard monitor arms.
Power	External adapter; 100–240 V; under 0.5 W in sleep The external adapter keeps the monitor thinner but takes extra space on the desk.
Size and weight	With stand 24.2 × 21.0 × 8.7 in (raised), 16.3 lb (about 7.4 kg); without stand 24.2 × 14.6 × 2.0 in, 10.8 lb (about 4.9 kg) Use the weight without the stand when choosing a monitor arm.
In the box	DisplayPort and HDMI cables No USB upstream cable is listed.

From the manufacturer

LG presents the 27G810A-B with Dual Mode switching between 4K 180 Hz and Full HD 360 Hz, and NVIDIA G-Sync compatibility. LG US

Owner experiences and issues

Most reviews on Best Buy Canada are syndicated from Best Buy US and were collected as part of a promotion. Positive reviews highlight the sharp 4K picture, easy setup and Dual Mode; Nadim says they kept it over an OLED and a mini LED monitor tried at the same time because of text clarity. On the negative side Walter and LGultra find brightness low, especially in game mode, and ALBERTC reports a vertical line on screen after five months. ECXZ says the screen occasionally stays black after the PC restarts and replugging the HDMI cable fixes it. Vincent returned it because it has no USB-C, JacobG only noticed afterwards that it has no speakers, and DeshawnS is unhappy that the 360 Hz mode works only at 1080p rather than 1440p.
About 100 reviews (January–October 2026) shown on Best Buy Canada listing 19873519 were read; most are promotional syndicated Best Buy US reviews. 32GR93U reviews in the pool were excluded. Individual reports; no failure rate was drawn.
Best Buy Canada: LG UltraGear 27G810A-B customer reviews

LG UltraGear 27G810A-B

Specifications

From the manufacturer

Owner experiences and issues

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