LG UltraGear 39GX900A-B 39-Inch Curved OLED Gaming Monitor
Immerse yourself in expansive UltraWide gaming with a 3440 × 1440 OLED display, 240Hz refresh rate, ultra-fast 0.03ms response time and an enveloping 800R curve. HDR True Black 400, adaptive-sync technologies and USB-C with 65W power delivery complete this premium gaming display.
Key Highlights
39-Inch OLED
WQHD resolution and a 21:9 UltraWide format deliver an expansive, immersive viewing experience.
240Hz / 0.03ms
High refresh rate and fast pixel response support fluid, responsive gameplay.
800R Curvature
A pronounced curved screen wraps the UltraWide display around your field of view.
USB-C 65W
Connect compatible laptops through USB-C with display support and up to 65W power delivery.
Introduction
The LG UltraGear 39GX900A-B.ATR is a premium curved OLED gaming monitor built for immersive PC gaming, entertainment and demanding visual experiences. Its 39-inch, 21:9 UltraWide screen uses a WQHD resolution of 3440 × 1440, providing a broad horizontal field of view for compatible games and applications.
OLED technology delivers deep blacks and high contrast, while the advertised 240Hz refresh rate and 0.03ms GtG response time are designed for fast, fluid motion. The 800R curvature brings the display edges closer to the viewer, helping create a more enveloping experience across the wide screen.
DisplayHDR True Black 400 and a typical DCI-P3 colour gamut of 98.5% support rich contrast and vibrant colour. NVIDIA G-SYNC Compatible, AMD FreeSync Premium Pro and VESA AdaptiveSync technologies help reduce tearing and stuttering with compatible graphics hardware. USB-C with up to 65W power delivery also makes this monitor useful for compatible laptop setups.
Features and Technologies
39-Inch WQHD OLED Display
The 3440 × 1440 resolution and 21:9 aspect ratio provide a wide workspace and expansive gaming view. OLED technology offers pixel-level light control for deep blacks and strong contrast.
240Hz Refresh Rate
The display refreshes up to 240 times per second, helping compatible games look smoother during fast movement. The actual refresh rate depends on the connection, system configuration and game output.
0.03ms GtG Response Time
Fast pixel transitions help minimise visible trailing and ghosting in fast-moving scenes, supporting responsive competitive gameplay.
Immersive 800R Curve
The 800R curvature is designed to create a more enveloping view across the 21:9 screen, placing the player closer to the action in compatible games and entertainment.
DisplayHDR True Black 400
HDR support and OLED contrast help render dark scenes with nuanced shadow detail and bright highlights. HDR performance also depends on the content and system settings.
Wide Colour Gamut
The typical DCI-P3 coverage of 98.5% supports vibrant colour reproduction for games, entertainment and compatible creative workflows.
Adaptive-Sync Support
NVIDIA G-SYNC Compatible, AMD FreeSync Premium Pro and VESA AdaptiveSync support smoother gameplay when paired with compatible graphics hardware.
USB-C with 65W Power Delivery
A compatible laptop can use a single USB-C connection for display output and up to 65W of charging power, subject to device and cable compatibility.
Gaming Enhancements
Features include Black Stabilizer, Crosshair, FPS Counter and Dynamic Action Sync to customise the gaming experience and improve access to in-game visual information.
OLED Protection Controls
On-screen display options include OLED-related protection settings designed to help manage image retention and reduce burn-in risk during long-term use.
DTS Headphone:X
Supported headphone audio processing provides an additional spatial-audio option when using compatible headphones and content.
Adjustable Ergonomic Stand
The stand supports height, tilt and swivel adjustments to help position the monitor comfortably. Its L-shaped design helps maintain a clean desk layout.
Deep Blacks. Fluid Motion. A Wider View.
Combine OLED contrast and vibrant colour with 240Hz gameplay and an 800R curved UltraWide screen. With HDMI 2.1, DisplayPort and USB-C connectivity, the LG UltraGear 39GX900A-B is designed for immersive gaming and flexible compatible-device setups.
Technical Specifications
Specifications are based primarily on LG India's official product information. Maximum refresh rate and USB-C power delivery depend on the connected device, cable and configuration. Confirm the exact regional model and package contents with the seller before purchase.
Ideal Use Cases
Competitive PC Gaming
The 240Hz refresh rate and 0.03ms response time are suited to fast-paced games when the PC can deliver high frame rates.
Immersive AAA Gaming
The 39-inch curved UltraWide OLED screen gives compatible games a broad field of view and deep contrast.
Entertainment and Streaming
OLED contrast, HDR support and the wide aspect ratio create an engaging screen for supported films and video content.
Multitasking and Productivity
The 21:9 workspace helps place multiple windows side by side for compatible productivity and multitasking workflows.
Compatible Laptop Setups
USB-C display connectivity and up to 65W power delivery can simplify compatible laptop desk setups with a single cable.
Colour-Rich Visual Work
The wide DCI-P3 colour gamut is useful for compatible creative workflows, though professional colour work may require calibration.
Before You Buy / Install
- To use the monitor at WQHD 3440 × 1440 and up to 240Hz, ensure your graphics card, connection and cable support the required output. LG specifies DisplayPort 1.4 or HDMI 2.1 for high-refresh operation.
- USB-C power delivery is rated up to 65W. Check your laptop's charging requirements and ensure the USB-C connection supports video output.
- The 21:9 aspect ratio may not be supported natively by every game or console. Some content may show black bars or use a different aspect ratio.
- OLED displays can experience image retention or burn-in with prolonged static content. Use the available OLED protection features and follow LG's usage guidance.
- The 800R curve is pronounced. Check desk depth, viewing distance and available space before purchase.
- The monitor's full 240Hz capability depends on compatible hardware and settings; not every game or graphics card will achieve 240 frames per second at this resolution.
- Check the exact model suffix, warranty coverage, included cables and local seller terms before ordering.
Frequently Asked Questions
What is the resolution of the LG UltraGear 39GX900A-B?
It features a WQHD resolution of 3440 × 1440 pixels in a 21:9 UltraWide aspect ratio.
What is the maximum refresh rate?
The monitor supports a refresh rate of up to 240Hz. Achieving this requires compatible graphics hardware, the correct connection and suitable display settings.
Is this an OLED gaming monitor?
Yes. The 39GX900A-B uses OLED display technology, which provides deep blacks, high contrast and fast pixel response.
Does the monitor support NVIDIA G-SYNC?
Yes. LG lists NVIDIA G-SYNC Compatible support, along with AMD FreeSync Premium Pro and VESA AdaptiveSync.
Can I connect and charge a laptop through USB-C?
Yes, with a compatible laptop and USB-C cable. The monitor supports USB-C display connectivity and up to 65W power delivery. Check that the laptop supports video output over USB-C.
What is the benefit of the 800R curve?
The 800R curve creates a pronounced wraparound viewing experience across the UltraWide screen, helping make gaming and compatible entertainment more immersive.
Is the monitor suitable for console gaming?
It includes HDMI 2.1 connectivity and can be used with compatible consoles. However, console resolution, refresh rate and aspect-ratio support depend on the console and game; not all consoles support the monitor's full 21:9 format or 240Hz refresh rate.
Does OLED require any special care?
OLED panels can be susceptible to image retention or burn-in from prolonged static content. Use the monitor's OLED protection features, allow its maintenance routines to operate as instructed and follow LG's recommendations.
Does it support HDR?
Yes. LG lists VESA DisplayHDR True Black 400 support. HDR performance depends on the content, source device and display settings.
Create Your Ultimate Gaming Setup
Pair your gaming monitor with the right graphics card, powerful PC components and accessories for a smooth, immersive gaming experience. Explore PC hardware at Clarion Computers.