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Overview

This description was created using an AI language model*

Level up your gameplay with the LG UltraGear 27" QHD OLED gaming monitor. Enjoy ultra-fast 0.02ms response time and a 540Hz refresh rate for smooth, immersive action. With VESA DisplayHDR True Black 500, perfect blacks, 100% colour fidelity, and advanced connectivity options including DisplayPort 2.1, HDMI 2.1, and USB-C, this monitor offers unparalleled depth and realism to every frame.

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

Model: 27GX790B-B
Web Code: 19647042
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Available for deliveryAvailable for backorder

Backorders will be shipped by March 20

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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
  • QHD screen resolution and 16:9 aspect ratio ensure sharp, detailed images for immersive gameplay
  • 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
  • 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
  • UL-verified anti-glare and low reflection technologies reduce reflections and support advanced eye comfort during extended gaming sessions
  • 178-degree wide viewing angles present consistent, vivid visuals from nearly any position
  • VESA Certified Dual-Mode enables seamless switching between QHD 540Hz and HD 720Hz for optimized performance across different game genres
  • 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
  • Virtually borderless design with a fully adjustable stand (tilt, swivel, and height) creates a refined gaming setup

*This description was created using an AI language model and is intended to provide general information only. While we strive to deliver accurate information, we cannot guarantee it will always be accurate.

Product Condition
Brand New
ENERGY STAR certified
No

Display

Screen Size
27 in
Resolution
1440p WQHD
Native Resolution
2560 x 1440
Aspect Ratio
16:9
Display Type
OLED
Touchscreen
No
Viewing Angle
178º(R/L), 178º(U/D)
Response Time (Grey-to-Grey)
0.02 ms
Refresh Rate
540 Hz
Brightness
335 cd/m²
Dynamic Contrast Ratio
1500000:1
Colour Gamut
DCI-P3 99.5% (CIE1976)
3D Video Support Built-in
No
Built-In TV Tuner
No

Panel

Panel Technology
OLED
Panel Type
OLED
Curved
No

Audio

Built-in Speakers
No

Inputs/Outputs

Input/Output Types
2 x HDMI; 1 x DisplayPort; 1 x USB-C; 2 x USB-A; Headphone out - 4 pole (Sound+Mic)
DVI-D Support
No
HDCP Support
Yes

Power

Typical Consumption
25 W
Stand-By Consumption
0.5 W
Auto Off
Yes
Energy Saving Mode
Yes

Stand/Mount Features

Tilt Adjustment
Yes
Swivel Adjustment
Yes
Height Adjustment
Yes
Rotate to Portrait
Yes
VESA Mountable
Yes
VESA Sizes Supported
100 x 100
Other Features
HDR 10; VESA DisplayHDR; DisplayHDR500 TRUE BLACK; HDR Effect; Colour Calibrated in Factory; HW Calibration; HW Calibration Ready; Reader Mode; Colour Weakness; NVIDIA G-Sync Compatible; AMD FreeSync Premium Pro; VRR; VESA Adaptive Sync; VESA Dual-Mode QHD 540Hz / HD 720Hz; VESA ClearMR; 21000; Black Stabilizer; Dynamic Action Sync; Crosshair; FPS Counter; User Defined Key; Auto Input Switch; RGB LED Lighting; Unity Hexagon Lighting; Smart Energy Saving; Live Colour Low Blue Light

Physical Features

Colour
Black
Dimensions with Stand (cm)
60.5 (W) x 52.7 (H) x 22 (D) cm
Dimensions with Stand (in)
23.82 (W) x 20.75 (H) x 8.66 (D) in
Dimensions without Stand (cm)
60.5 (W) x 35.1 (H) x 5.1 (D) cm
Dimensions without Stand (in)
23.82 (W) x 13.82 (H) x 2.01 (D) in
Weight (With Stand)
6.8 kg
Weight (Without Stand)
4.3 kg

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.