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LG UltraGear 27GP850-B 27" QHD 165Hz Nano IPS Gaming Monitor

FPS Gaming, Competitive Gaming, Esports, Creative Work

Overview

The LG UltraGear 27GP850-B is a 27-inch QHD Nano IPS gaming monitor with a 165Hz (180Hz overclockable) refresh rate and 1ms response time. Its Nano IPS panel delivers 98% DCI-P3 color and DisplayHDR 400, making it a favorite pick for both competitive and visually rich gaming. Dual adaptive sync support keeps gameplay smooth on NVIDIA and AMD systems alike.

Key Highlights

  • 27-inch QHD (2560x1440) Nano IPS panel with vivid 98% DCI-P3 color coverage
  • 165Hz refresh rate (overclockable to 180Hz) with 1ms GtG response time
  • G-SYNC Compatible and FreeSync Premium for smooth, tear-free gameplay
  • DisplayHDR 400 certification delivers brighter highlights and richer contrast
  • Three-sided virtually borderless design with a fully adjustable ergonomic stand

Technical Specifications

Brand LG
Model LG UltraGear 27GP850-B 27" QHD 165Hz Nano IPS Gaming Monitor
Display Size 27" (68.6 cm)
Resolution 2560 x 1440 (QHD)
Aspect Ratio 16:9
Panel Type Nano IPS
Refresh Rate 165Hz (180Hz OC)
Response Time 1ms (GTG)
HDR Support DisplayHDR 400
Variable Refresh G-SYNC Compatible, FreeSync Premium
Brightness 400 cd/m² (typical)
Contrast Ratio 1000:1
Color Gamut 98% DCI-P3
Connectivity 1x DisplayPort 1.4, 2x HDMI 2.0, USB 3.0 hub
Ports & I/O 2x HDMI 2.0 1x DisplayPort 1.4 1x Headphone Out 1x USB 3.0 Up/2x Down
Stand Height, tilt, swivel, pivot
VESA Mount 100 x 100 mm
Weight 6.0 kg (13.2 lb) with stand
Dimensions 614.2 x 574.7 x 274 mm (with stand)
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Troubleshooting

Fix Guides for the LG UltraGear 27GP850-B 27" QHD 165Hz Nano IPS Gaming Monitor

Step-by-step fixes for common issues with this gadget

🔧 Fix Guide

Fix Backlight Bleed and IPS Glow on the LG UltraGear 27GP850-B

23 Aug 2026

Causes The 27GP850-B is an edge-lit Nano IPS panel with no local dimming, so light leaks along the edges (backlight bleed) and washes out corners when viewed off-axis in a dark room (IPS glow). Manufacturing variance means some units arrive with a bright 'orange cloud' or blotches in the corners, and a too-tight VESA clamp can press the panel against the backlight and make things worse. Fixes in order: test properly, lower brightness, loosen the mount, reposition your viewing angle, and exchange extreme units.

🔧 Fix Guide

Fix Flickering on the LG UltraGear 27GP850-B

23 Aug 2026

Causes The most common cause of flicker on the 27GP850-B is variable refresh rate (G-Sync Compatible / FreeSync) luminance fluctuation when the frame rate wavers, but HDR-enabled brightness oscillation, the OSD Power Saving / Eco modes, and a loose or low-bandwidth DisplayPort link all trigger it too. Fixes in order: disable Energy Saver, sort out VRR and HDR, reseat the cable, update the driver, and power-cycle.

🔧 Fix Guide

Fix Ghosting and Inverse Ghosting on the LG UltraGear 27GP850-B

23 Aug 2026

Causes The 27GP850-B's Response Time (overdrive) control left on its fastest 'Faster' setting over-drives the Nano IPS pixels, producing inverse ghosting / white trails behind moving objects, and this gets worse when the refresh rate or VRR frame rate drops. Running a slow 60Hz source through a fast overdrive, or enabling backlight strobing, adds artifacts regardless of how the monitor is tuned. Fixes in order: drop the overdrive to Fast or Normal, run the native 165Hz, sort out VRR, disable strobing, and update the driver.