LG UltraGear 27G810A-B / ASUS ROG Strix OLED XG27UCDMG

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

ASUS ROG Strix OLED XG27UCDMG: XG27UCDMG · 26.5-inch 4K 240 Hz QD-OLED

Specification	LG UltraGear 27G810A-B	ASUS ROG Strix OLED XG27UCDMG
Release year	2026	2025
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. LG	26.5-inch (27-inch class) QD-OLED, 16:9, anti-reflection surface QD-OLED pairs self-emitting pixels with a quantum-dot colour layer; each pixel switches off individually, so blacks are fully dark. ASUS
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. LG	—
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. LG	—
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. LG	0.03 ms (GtG) This is the grey-to-grey pixel transition time, not total input lag. ASUS
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. LG	—
HDR	HDR10; VESA DisplayHDR 400 DisplayHDR 400 is VESA’s lowest HDR certification tier; HDR content plays but bright highlights stay limited. LG	HDR10; VESA DisplayHDR 400 True Black ASUS
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. LG	99% DCI-P3, 145% sRGB; ΔE < 2; 10-bit Factory calibration (ΔE < 2) means colours are set close enough to target that differences are hard to see. ASUS
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. LG	—
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. LG	—
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. LG	—
Audio	Headphone out; DTS Headphone:X; no built-in speakers listed Headphones or external speakers are needed for sound. LG	—
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. LG	Tilt +20°/−5°, swivel ±45°, pivot ±90°, 0–120 mm height; VESA 100 × 100; 1/4-inch tripod socket The tripod socket lets a camera or light be mounted on the stand. ASUS
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. LG	—
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. LG	—
In the box	DisplayPort and HDMI cables No USB upstream cable is listed. LG	DisplayPort, Ultra High Speed HDMI, USB 3.2 and USB-C cables; power cord; VESA mount kit; microfibre cloth ASUS
Resolution and refresh	—	3840 × 2160, 240 Hz The 4K 240 Hz signal travels over DisplayPort 1.4 with DSC compression, or over HDMI 2.1 depending on graphics-card support. ASUS
Brightness	—	1000 cd/m² HDR peak ASUS notes peak brightness may vary with colour pre-calibration; the peak is reached on a small screen area. ASUS
Contrast	—	1,500,000:1 (typical) ASUS
Inputs	—	1 × DisplayPort 1.4 (DSC); 2 × HDMI 2.1 (FRL); 1 × USB-C (DP Alt Mode, 90 W power) The USB-C input takes video from a laptop and charges it at up to 90 W over one cable. HDMI 2.1 suits consoles at 4K 120 Hz. ASUS
USB hub and audio	—	3 × USB 3.2 Gen 1 Type-A; headphone jack ASUS
Variable refresh	—	FreeSync Premium Pro, G-SYNC Compatible; VESA AdaptiveSync Display 240 Hz Variable refresh matches the screen's rate to the graphics card's frame rate, reducing tearing and stutter. ASUS
Features	—	ASUS OLED Care, KVM switch, Extreme Low Motion Blur, Neo Proximity Sensor, flicker-free KVM shares a keyboard and mouse connected to the monitor between two computers. The proximity sensor dims the screen when the user leaves to reduce OLED wear. ASUS
Power consumption	—	< 80 W; < 0.5 W in power saving; < 0.3 W off; 100–240 V ASUS
Dimensions and weight	—	With stand 61.30 × 50.94 × 16.87 cm, 7.44 kg; without stand 61.03 × 36.92 × 6.65 cm, 5.0 kg ASUS
Warranty	—	3 years (including panel burn-in) Warranty terms may vary by country. ASUS