The LG UltraGear GX9s (39GX90SB-W) smart curved gaming monitor combines a state-of-the-art 39" UltraWide OLED panel with the webOS 26 operating system for direct access to streaming services and cloud gaming without the need to connect a PC. The screen, featuring an 800R curvature, Micro Lens Array+ (MLA+) technology, and a 240 Hz refresh rate, guarantees smooth visuals with an extremely fast response time of 0.03 ms (GtG). The built-in alpha 8 AI Gen3 processor enhances the image using AI Picture Pro and delivers AI Sound Pro spatial audio.
Thanks to VESA DisplayHDR True Black 400 technology and 98.5% DCI-P3 color gamut coverage, the monitor delivers perfect black levels and vibrant colors. The monitor offers a wide range of ergonomic adjustment options, a USB-C port with up to 65 W power delivery, built-in stereo speakers, and a rich set of gaming features, including support for NVIDIA G-SYNC Compatible and AMD FreeSync Premium Pro.
Specifications
Display: 39" (99.1 cm) OLED, curved (800R), 21:9, matte (Anti-Glare / Discomfort Glare Free)
Resolution: WQHD (3440 × 1440 px)
Refresh Rate and Response Time: 240 Hz, 0.03 ms (GtG)
Brightness and Contrast: 275 cd/m2 (typ.), peak brightness up to 1,300 nits, contrast ratio 1,500,000:1 (typ.)
Color Gamut and HDR: DCI-P3 98.5%, 1.07 billion colors (10-bit), VESA DisplayHDR™ True Black 400, HDR10
Smart Features and Processor: webOS 26, alpha 8 AI Gen3 processor, AI Picture Pro, AI Sound Pro, LG ThinQ, supports cloud gaming and streaming
Gaming technology: NVIDIA® G-SYNC® Compatible, AMD FreeSync™ Premium Pro, VESA Certified AdaptiveSync, VRR, DAS (Dynamic Action Sync), Black Stabilizer, Crosshair, FPS Counter
Audio: Built-in 2× 5 W stereo speakers (Virtual 11.1.2 Ch via AI Sound Pro)
Connectivity: 2× HDMI 2.1, 1× DisplayPort 1.4, 1× USB-C (65 W Power Delivery, DP Alt Mode, data), 2× USB 2.0 downstream, 1× LAN (RJ-45), 3.5mm audio output
Wireless Connectivity: Wi-Fi, Screen Mirroring
Ergonomics and Design: Height adjustment (110 mm), tilt, swivel, VESA 100 × 100 mm wall mount, Hexagon Lighting backlight
Eye comfort certifications: UL Flicker-Free, Discomfort Glare Free, Low Blue Light
Dimensions and weight: 887.8 × 495.7–605.7 × 322.8 mm (with stand), weight 11.5 kg (with stand) / 7.3 kg (without stand)
Warranty: 2-year limited warranty (including OLED panel)
Package Contents
39" LG UltraGear GX9s (39GX90SB-W) monitor with stand
Remote control
DisplayPort cable
HDMI cable
USB-C cable
Power adapter and cable
Documentation