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LG 27G640A-B 27-inch Ultragear QHD (2560 x 1440) IPS Gaming Monitor, 300Hz, 1ms, NVIDIA G-Sync, AMD FreeSync Premium, VESA DisplayHDR 400, HDMI 2.1, USB Type-C, Tilt/Height/Swivel/Pivot Stand, Black

Blazing Speed Brilliant Color Total Control - Dominate every match with the 27-inch QHD IPS UltraGear gaming monitor built for pro-level speed clarity and precision delivering ultra-smooth motion with a 300Hz refresh rate and 1ms GtG response time for competitive gaming performance
Stunning QHD IPS Clarity - Experience sharp lifelike detail on a 27-inch QHD 2560x1440 IPS display with wide viewing angles ensuring consistent color accuracy and visual fidelity from every position
Vibrant HDR and Wide Color Gamut - Immerse yourself in cinematic brilliance with up to 95 percent DCI-P3 color coverage and VESA DisplayHDR 400 enhancing contrast brightness and depth for realistic game worlds
Tear Free Adaptive Sync Gaming - Enjoy seamless performance with AMD FreeSync Premium and NVIDIA G-SYNC compatibility eliminating tearing and stutter for smooth fluid frames across PC and console gaming
Ergonomic Frameless Design - The ultra-thin bezel display enhances immersion while adjustable height tilt swivel and pivot allow personalized comfort and an ideal viewing position for long gaming sessions
Pro Level Connectivity - USB Type-C with 15W power delivery dual HDMI 2.1 ports and DisplayPort 1.4 provide high-speed connections vivid color and next-gen support for gaming PCs and consoles
Advanced Gaming Features - Dynamic Action Sync reduces input lag Black Stabilizer brightens dark scenes and Crosshair and FPS Counter features boost aiming precision and real-time performance awareness

Overview

Specs

Reviews

Model
Brand	LG
Model	27G640A-B.AUSQ

Display
Screen Size	27"
Widescreen	Yes
Panel	IPS
Adaptive Sync Technology	FreeSync Premium & G-Sync Compatible
Resolution	2560 x 1440 (2K)
Aspect Ratio	16:9
Brightness	400 cd/m2
Contrast Ratio	1,300:1
Response Time	1ms (GtG at Faster)
Color Gamut	DCI P3 95% (CIE1976)
Display Colors	1.07 Billion
Monitor Pixel Density	0.2328mm
Refresh Rate	300 Hz
HDR Standard	HDR10
VESA Certified DisplayHDR	DisplayHDR 400
Curved Surface Screen	Flat Panel

Connectivity
Video Ports	1 x DisplayPort 1.4 / 2 x HDMI 2.1
USB Ports	1 x USB 3.0 Upstream / 1 x USB Type-C / 2 x USB 3.0 Type-A Downstream
Headphone	3-pole (Sound Only)

Power
Power Supply	100 - 240 VAC, 50/60Hz
Power Consumption	Power Save/Sleep Mode (Max): Less than 0.5W DC Off (Max): Less than 0.3W

Convenience
Stand Adjustments	Height, Pivot, Swivel, Tilt
Built-in Speakers	Yes
VESA Compatibility - Mountable	100 x 100mm
Features	HDR Effect Factory Calibrated VRR Flicker Safe Reader Mode Color Weakness Mode Black Stabilizer Dynamic Action Sync Crosshair FPS Counter User Define Key Auto Input Switch Smart Energy Saving LG Switch

Dimensions & Weight
Dimensions (H x W x D)	15.3"-21.2" x 24.2" x 9.4" with stand 14.4“ x 24.2" x 2.3" without stand
Weight	12.1 lbs. with stand 7.5 lbs. without stand

Additional Information
First Listed on Newegg	September 10, 2025

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