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Overview

Experience ultra-smooth gaming action with the LG UltraGear 27" QHD OLED Gaming Monitor. Its 0.02ms response time and 540Hz refresh rate at QHD deliver lifelike motion, while UL Verified Perfect Black enhances realism in every frame. A fully adjustable stand adds comfort for extended sessions.
  • 27 in. QHD OLED screen for crisp, immersive visuals
  • 540Hz refresh rate supports fluid motion in fast-paced games
This description was generated by AI and reviewed for accuracy.

LG UltraGear 27" 1440p QHD OLED Gaming Monitor (27GX790B-B) - G-Sync/FreeSync - 0.02ms GTG - 540Hz - HDR10

Model: 27GX790B-B
Web Code: 19647042
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Backorders will be shipped by September 11

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Coverage that goes above and beyond the manufacturer’s warranty.

Return Policy

30 days to return or exchange

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Manufacturer's Warranty

Check with the manufacturer for details or add Best Buy Protection for extra coverage.

For Quebec residents: See the Availability Guarantee disclosure in the Specifications section below.

What's included:

  • LG Monitor
  • External Power Adapter
  • HDMI Cable
  • DisplayPort Cable
What you need to know
  • 27 in. screen with 2560 x 1440 QHD native resolution for detailed graphics
  • OLED panel provides UL Verified Perfect Black levels and vibrant, lifelike colour
  • 540Hz maximum refresh rate enables ultra-smooth game motion
  • Supports AMD FreeSync Premium Pro, NVIDIA G-SYNC, and VESA AdaptiveSync for tear-free visuals
  • VESA DisplayHDR True Black 500 delivers deeper detail and realism
Screen & Picture
  • QHD resolution and 16:9 aspect ratio ensure sharp, detailed images for immersive gameplay
  • 4th Gen OLED with Primary RGB Tandem technology achieves up to 1,500 nits peak brightness for clear visuals, even in bright environments
  • UL Verified Perfect Black provides true black levels to enhance contrast and game atmosphere
  • 100% colour fidelity and wide DCI-P3 99.5% colour gamut maintain accurate colour expression under varying ambient light
  • VESA DisplayHDR True Black 500 and advanced RGB structure offer deeper detail and vibrant realism in every frame
  • 178-degree wide viewing angles present consistent, vivid visuals from nearly any position
Motion & Gaming
  • Ultra-fast 0.02ms GTG response time and 540Hz refresh rate (QHD) offer smooth, lightning-fast gaming performance
  • AMD FreeSync Premium Pro, NVIDIA G-SYNC compatibility, and VESA AdaptiveSync technology provide tear-free visuals, ultra-smooth motion, and low-latency performance
  • VESA Certified Dual-Mode enables seamless switching between QHD 540Hz and HD 720Hz for optimized performance across different game genres
Viewing Comfort
  • UL-verified anti-glare and low reflection technologies reduce reflections and support advanced eye comfort during extended gaming sessions
Connections
  • DisplayPort 2.1, dual HDMI 2.1, and USB-C connectivity enable high-speed, flexible setups with modern gaming devices
  • Four-pole headphone out and DTS Headphone:X support provide immersive voice chat and virtual 3D sound
Stand, Mounting & Dimensions
  • Virtually borderless design with a fully adjustable stand (tilt, swivel, and height) creates a refined gaming setup
This description was generated by AI and reviewed for accuracy.

For Quebec residents – Disclosure under the Consumer Protection Act

In compliance with Bill 29, Best Buy and third-party sellers on Best Buy Marketplace do not guarantee the availability of replacement parts, repair services, or maintenance information for any products. Coverage provided through any Best Buy Protection programs and applicable manufacturer warranties, if any, remain in place. Please contact the manufacturer directly for information about their availability guarantee.