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Overview

Be at the centre of the action with the LG gaming monitor. Its curved OLED screen with WQHD resolution delivers vibrant visuals, while the 21:9 aspect ratio elevates immersion. AMD FreeSync Premium Pro and VESA Certified AdaptiveSync ensure fluid visuals during fast-paced games. Black Stabilizer brightens dark scenes, making it easy to spot hidden enemies for smooth gameplay.

LG 39" WQHD 240Hz 0.03ms GTG Curved OLED G-Sync FreeSync Gaming Monitor (39GX900A-B) - Black

Model: 39GX900A-B
Web Code: 19458517
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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
  • USB-C cable
  • Curved 39-inch OLED screen with WQHD (3440 x 1440) resolution delivers sharp, detailed visuals
  • 21:9 aspect ratio provides an immersive and captivating experience for both gaming and entertainment content
  • 0.03ms (GtG) response time combined with a 240Hz refresh rate minimizes reverse ghosting, delivering crystal-clear, fluid visuals
  • NVIDIA G-Sync compatibility reduces screen tearing and stuttering, providing smooth and crystal-clear gameplay
  • AMD FreeSync Premium Pro and VESA Certified AdaptiveSync ensure fluid and clear gameplay in fast-paced, high-resolution games
  • ClearMR 13000 certification, which exceeds VESA standards, reduces subtle blurring around moving objects, delivering crisp, detailed visuals during fast-moving action
  • HDR10 and DisplayHDR 400 True Black deliver vibrant colours and deep, true-to-life blacks for a visually stunning experience
  • 1.5M contrast ratio and DCI-P3 98.5% (typical) colour gamut deliver colours with realistic detail exactly as intended
  • Micro Lens Array+ (MLA+) technology offers up to 37.5% brighter SDR by optimizing light efficiency and minimizing loss
  • Ideal 800R curvature with a 90-degree viewing angle provides a consistent field of view and vivid, distortion-free visuals that immerse you in your games
  • 178-degree wide viewing angle both horizontally (R/L) and vertically (U/D) ensures consistent, clear visuals from almost any position
  • Low latency minimizes input lag, ensuring real-time responsiveness
  • Black Stabilizer enhances visibility in dark scenes, allowing gamers to easily spot enemies and details
  • Crosshair feature enhances aiming accuracy, giving competitive edge in shooting and action games
  • FPS Counter provides real-time frame rate data to ensure smooth performance whether you're gaming, editing, or watching movies
  • 2PBP (Picture-by-Picture) and PIP (Picture-in-Picture) allow you to multitask efficiently by displaying content from two sources simultaneously on one screen
  • Live colour low blue light reduces eye strain by minimizing harmful blue light while maintaining vibrant, natural colours for comfortable, extended viewing
  • Built-in 7W speakers deliver rich, clear sound to complement your visual experience
  • Smart energy saving reduces power consumption without compromising display performance
  • Sleek L-stand design keeps your workspace clean and clutter-free.
  • Two HDMI, one DisplayPort, one USB-C with 65W power delivery, two USB-A v3.0; Headphone out - four pole (sound+mic) offer versatile connectivity options
Product Condition
Brand New
ENERGY STAR certified
No

Display

Screen Size
39 in
Native Resolution
3440 x 1440
Aspect Ratio
21:9
Display Type
OLED
Touchscreen
No
Viewing Angle
178º(R/L), 178º(U/D)
Response Time (Grey-to-Grey)
0.03 ms
Refresh Rate
240 Hz
Brightness
275 cd/m²
Dynamic Contrast Ratio
1500000:1
Colour Gamut
DCI-P3 98.5% (CIE1976)
3D Video Support Built-in
No
Built-In TV Tuner
No

Panel

Panel Technology
OLED
Panel Type
OLED
Curved
Yes

Audio

Built-in Speakers
Yes
Speaker Output Power
7W x2

Inputs/Outputs

Input/Output Types
2x HDMI; 1x DisplayPort; 1x USB-C with 65W power delivery; 2x USB-A v3.0; Headphone out - 4 pole (Sound+Mic)
DVI-D Support
No
HDCP Support
Yes

Power

Typical Consumption
50.35 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
No
VESA Mountable
Yes
VESA Sizes Supported
100 x 100
Other Features
HDR 10; DisplayHDR True Black 400; HDR Effect; Color Calibrated in Factory; HW Calibration Ready; Reader Mode; Color Weakness; NVIDIA G-Sync™; G-SYNC Compatible; AMD FreeSync™; FreeSync Premium Pro; VRR; VESA Adaptive Sync; VESA ClearMR; 13000; Black Stabilizer; Dynamic Action Sync; Crosshair; FPS Counter; User Defined Key; Auto Input Switch; RGB LED Lighting; Unity Hexagon Lighting; 2PBP; PIP; Smart Energy Saving; Live Color Low Blue Light

Physical Features

Colour
Black
Dimensions with Stand (cm)
88.7 (W) x 60.5 (H) x 32.3 (D) cm
Dimensions with Stand (in)
34.92 (W) x 23.82 (H) x 12.72 (D) in
Dimensions without Stand (cm)
88.7 (W) x 40.4 (H) x 19.8 (D) cm
Dimensions without Stand (in)
34.92 (W) x 15.91 (H) x 7.8 (D) in
Weight (With Stand)
11.45 kg
Weight (Without Stand)
7.3 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. Information about the manufacturer’s availability guarantee can be found .