LG UltraGear 27G810A-B / LG UltraGear evo GX9 39GX950B-B

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.

LG UltraGear evo GX9 39GX950B-B: 39GX950B-B · 38.86-inch · 5K2K · black

Specification	LG UltraGear 27G810A-B	LG UltraGear evo GX9 39GX950B-B
Release year	2026	2026
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	—
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	165 Hz (5120 × 2160) 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	—
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	—
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	—
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	2 × 7 W speakers; 4-pole headphone output; AI 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 −8° / +15°; ±30° swivel; 110 mm height adjustment The manual does not describe pivot rotation. LG
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	External adapter; 40.3 W on-mode in SDR, 45.9 W in HDR On-mode power demand from the product information sheet. 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	—
Display	—	38.86-inch OLED · 5120 × 2160 · 21:9 LG
Curvature	—	1500R LG
Pixel pitch	—	0.1776 × 0.1776 mm LG
Dual-Mode	—	330 Hz at 2560 × 1080 in the 21:9 modes; 330 Hz at 1920 × 1080 in the 16:9 modes The product page calls this mode QHD in one place and WFHD in another; the resolutions in the manual were used. Exit the game before changing the mode. LG
Pixel response	—	0.03 ms GtG Not total input lag. LG
Brightness	—	335 nits typical; 300 nits minimum LG
Peak HDR brightness	—	1500 nits Peak figure LG states under internal test conditions; not sustained full-screen brightness. LG
HDR formats	—	HDR10; VESA DisplayHDR True Black 500; no Dolby Vision LG
Colour coverage	—	DCI-P3 99.5% typical, 94% minimum (CIE1976); 1.07 billion colours LG
Contrast ratio	—	1,850,000:1 typical; 1,480,000:1 minimum Manufacturer figure. LG
Surface	—	Anti-glare, low-reflection front polarizer LG
Calibration	—	Factory calibrated; hardware-calibration ready (LG Calibration Studio) LG
Variable refresh	—	G-SYNC Compatible; FreeSync Premium Pro LG
DisplayPort	—	1 × DisplayPort 2.1; UHBR20 The graphics card and cable must support this rate. LG
HDMI	—	2 × HDMI 2.1 The menu has 2.1(PC) and 2.1(AV) compatibility options. The product page connectivity table omits the HDMI count; the two inputs in the manual were used. LG
USB-C input	—	1 × USB-C; video, data and up to 90 W power The manual lists DP Alternate Mode and Power Delivery. The port does not power the monitor; the adapter is required. LG
USB hub	—	USB-C upstream; 2 × downstream USB 3.2 Gen 2 The manual says the downstream ports run at USB 2.0 over a USB-C to USB-C cable and USB 3.0 over a USB-C to USB-A cable. LG
Multiple sources	—	2 × PBP and PIP; no built-in KVM LG
Wall mount	—	100 × 100 mm; 4 × M4 × L10 screws; optional LSW149 plate LG
Dimensions	—	921.4 × 605.4 × 322.8 mm with stand (up); 921.4 × 495.4 × 322.8 mm (down); 921.4 × 405.0 × 118.7 mm without stand Width × height × depth. LG
Weight	—	10.7 kg with stand; 6.8 kg without LG
OLED care	—	Screen saver; Image Cleaning of about 10 minutes The manual states that prolonged use can cause permanent brightness reduction and image retention. LG
Lighting	—	Unity Hexagon Lighting 2.0 on the back LG
Warranty	—	2 years; OLED panel included LG