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LG UltraGear 27 inch QHD 2K 1440P 300Hz AMD FreeSync Premium & G-Sync Compatible 1ms HDR400 USB-C Built-in Speaker Gaming Computer Monitor with Height Adjustable, Swivel, Pivot & Tilt Stand 27G640A-B

  • 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
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Overview
Specs
Reviews (4)
Blazing Speed. Brilliant Color. Total Control. Dominate the game with a 27" WQHD IPS display built for speed, clarity, and precision. Enjoy ultra-smooth action with 300Hz/1ms (GtG), vibrant HDR visuals, and tear-free gameplay-plus pro-level adjustments and versatile ports for your perfect setup. 27" WQHD IPS ClarityEnjoy crisp, detailed visuals with WQHD (2560x1440) resolution on a vibrant 27" IPS display. Wide viewing angles keep colors vivid from any position, so every scene stays crisp and vibrant. 300Hz Refresh Rate for the WinReact faster and play smoother with a blistering 300Hz refresh rate-perfect for high-speed competitive gaming where every millisecond counts.

Experience fluid motion and razor-sharp clarity, even in the most intense action.
1ms (GtG): Astounding Gaming SpeedPlay with a near-instantaneous 1ms response time, which minimizes ghosting for gaming visuals that are sharp, clear and buttery smooth. Vivid Color and HDR BrillianceImmerse yourself in lifelike visuals with up to 95% DCI-P3 color gamut and VESA DisplayHDR 400. Enjoy rich hues, bright highlights, and deep dark shadows that make every game more vibrant and every scene more cinematic.
Ultimate Frame Sync: FreeSync Premium & G-SYNC CompatibleSay goodbye to screen tearing and stutter. With AMD FreeSync Premium and NVIDIA G-SYNC compatibility, this UltraGear monitor delivers ultra-smooth, tear-free visuals, giving you perfect frame sync across PC and next-gen console gaming. Seamless Display, and Adjustable to Gamer SpecsDive into gameplay on the narrow-bezeled 27" screen. The slim-profile display has adjustable height, tilt, swivel and pivot controls that let you customize your view. Serious Connectivity for Serious GamersConnect your way with USB Type-C (15W power delivery), dual HDMI 2.1 ports, and DisplayPort 1.4. Enjoy smoother gameplay, vivid colors, and high-resolution graphics-plus the convenience of powering devices while you play or work

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    This product does not include manufacturer warranty when purchased or used outside of its designated sales region. By purchasing internationally, you acknowledge that warranty support from the manufacturer will not be available.
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The LG UltraGear 27G640A-B is a 27-inch QHD IPS gaming monitor with a 300Hz refresh rate, 1ms response time, and FreeSync Premium and G-SYNC compatibility, suited to competitive PC gamers who prioritize fast, smooth motion.

Recommended For

  • Competitive PC shooter players who want a sharp 1440p image with very high refresh and responsive motion; an owner review specifically describes using it for games such as Siege, Apex, and Destiny.
  • PC gamers who play at varying frame rates and want adaptive sync: the review found its variable-refresh behavior and adaptive overdrive useful with VRR and G-Sync.
  • Players sharing a desk between a gaming PC and a PlayStation 5 who want one display for both: the review reports PS5 support for 1440p, VRR, and 4K input downsampled at up to 120 Hz.
  • Gamers who need a flexible desktop setup, including height, swivel, tilt, and portrait adjustment plus USB-C video input for a connected laptop; note that USB-C charging is limited to 15 W.

Spec Summary

AttributeValue
Best ForCompetitive gaming and desktop entertainment, with a QHD IPS display, 300Hz refresh rate, 1ms response time, and FreeSync Premium and G-Sync Compatible support
Panel And Picture Quality27-inch flat IPS display with 2560 × 1440 resolution, 16:9 aspect ratio, 178° horizontal and vertical viewing angles, 400 cd/m² brightness, 1,300:1 contrast ratio, and 95% DCI-P3 color gamut; supports HDR10 and VESA DisplayHDR 400
Refresh Rate And Response300Hz refresh rate and 1ms response time, with FreeSync Premium and G-Sync Compatible adaptive sync
Ports And Connectivity2 HDMI 2.1 ports, 1 DisplayPort 1.4, USB-C with DisplayPort Alt Mode, 1 USB 3.0 upstream port, 2 USB 3.0 Type-A downstream ports, and a headphone connection; supports HDCP
Stand And MountingStand adjusts for height, pivot, swivel, and tilt; also supports 100 × 100mm VESA mounting
AudioBuilt-in speakers
Physical DesignBlack, flat-panel monitor with a thin bezel; measures 24.2 × 9.4 × 15.3–21.2 inches with stand and weighs 12.1 lb
Power100–240 VAC, 50/60Hz; power-save/sleep consumption under 0.5W and DC-off consumption under 0.3W
Model IdentifiersLG UltraGear G640A, model 27G640A-B
Included ComponentsMonitor, power cable, HDMI 2.1 cable, and DisplayPort cable