LG UltraGear 39GX90SA-W 39" UWQHD 240Hz 0.03ms 800R Curved OLED webOS Smart Gaming Monitor - White - 39GX90SA-W
Model # 39GX90SA-W
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SKU: 39GX90SA-W
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LG UltraGear 39GX90SA-W 39" 240Hz WQHD Curved OLED Gaming Monitor
Combine immersive OLED gaming with smart entertainment on the LG UltraGear 39GX90SA-W. The expansive 39-inch 21:9 WQHD display features an aggressive 800R curve, 240Hz refresh rate and ultra-fast 0.03ms GtG response time, while built-in webOS brings streaming and supported cloud gaming directly to the monitor.
Expansive UltraWide OLED immersion
39-inch WQHD UltraWide display
The 3440 × 1440 resolution and 21:9 aspect ratio deliver a wider field of view for games, entertainment and desktop multitasking while maintaining a detailed WQHD image.
Immersive 800R curvature
The deep 800R curve places more of the expansive screen within your natural field of view, creating an engaging viewing position for gaming and cinematic content.
OLED contrast and deep blacks
The OLED panel delivers a typical 1,500,000:1 contrast ratio, allowing dark scenes to retain deep black levels while bright details remain clearly defined.
Advanced anti-glare technology
LG OLED anti-glare technology helps minimise distracting reflections while preserving clear viewing across different lighting environments.
High-speed performance for competitive gaming
240Hz refresh rate
A maximum 240Hz refresh rate provides smooth motion and rapid visual updates for fast-paced shooters, racing titles and competitive gameplay.
0.03ms GtG response time
The OLED panel delivers an ultra-fast 0.03ms GtG response time to help keep movement sharp during fast action.
Adaptive sync support
NVIDIA G-SYNC Compatible, AMD FreeSync Premium and VESA Certified AdaptiveSync support help reduce tearing and stuttering when used with compatible hardware.
Advanced gaming features
Dynamic Action Sync, Black Stabiliser, Crosshair and FPS Counter provide useful tools for responsiveness, dark-scene visibility, aiming and performance monitoring.
Deep blacks and vivid HDR colour
DisplayHDR True Black 400
VESA DisplayHDR True Black 400 takes advantage of OLED black levels to provide detailed dark scenes and strong contrast in compatible HDR content.
DCI-P3 98.5%
DCI-P3 98.5% typical colour gamut coverage helps reproduce rich and realistic colour across compatible games, movies and visual content.
1.07 billion colours
Support for approximately 1.07 billion colours provides smooth tonal transitions and detailed colour reproduction.
HDR10 support
HDR10 compatibility enables supported high-dynamic-range content to take advantage of the OLED panel's exceptional contrast capability.
Dynamic Tone Mapping
Dynamic Tone Mapping adjusts brightness and contrast for compatible HDR video to reveal detail across bright highlights and darker scenes.
webOS smart gaming and entertainment
webOS built in
Integrated webOS provides access to LG Channels, compatible streaming services and supported cloud gaming platforms without requiring a separate PC or console for compatible content.
AI Picture
AI Picture enhances supported webOS content by recognising subjects, reducing noise and adding visual depth for a more detailed viewing experience.
AI Personalised Picture Wizard
Select your preferred image style and the Personalised Picture Wizard can create a picture profile based on your visual preferences.
Remote controller included
The supplied remote provides convenient control over supported webOS smart functions, streaming and entertainment features.
AI Sound
AI Sound analyses supported content and listening conditions to deliver optimised audio through the monitor's integrated speaker system.
Built-in sound for gaming and entertainment
7W × 2 speakers
Integrated 7W × 2 speakers provide convenient audio directly from the monitor for gaming, streaming and everyday entertainment.
Bluetooth connectivity
Bluetooth audio support allows compatible wireless audio devices to connect directly to the monitor.
Flexible connectivity for gaming and work
Dual HDMI connectivity
Two HDMI connections provide flexible connectivity for compatible gaming systems and computers, with an HDMI 2.1 cable included in the package.
DisplayPort 1.4 with DSC
DisplayPort 1.4 with Display Stream Compression provides a high-bandwidth connection for compatible PC gaming hardware.
USB-C with 65W power delivery
USB-C supports video, data transmission and up to 65W power delivery, helping compatible laptops connect and charge through one cable.
RJ45 and USB connectivity
Built-in RJ45 Ethernet and two USB 2.0 downstream ports provide additional connectivity for compatible networks and peripherals.
Multi-source viewing and flexible positioning
Picture-in-Picture
Picture-in-Picture lets a secondary compatible source appear within the main display for flexible multi-source viewing.
2-way Picture-by-Picture
2PBP allows two compatible sources to be displayed side by side across the wide 21:9 OLED screen.
Height, tilt and swivel adjustment
The clutter-minimising L-stand supports height, tilt and swivel adjustment so the display can be positioned around your gaming or working setup.
100 × 100 mm VESA mounting
VESA mounting support allows the monitor to be paired with a compatible monitor arm or wall mounting solution.
Why Choose the LG UltraGear 39GX90SA-W?
The LG UltraGear 39GX90SA-W combines a large 39-inch 800R curved OLED display with the speed of 240Hz and a 0.03ms GtG response time, providing an immersive platform for high-refresh gaming.
Built-in webOS, integrated speakers, Bluetooth, USB-C power delivery, RJ45 networking and multi-source viewing extend its usefulness beyond gaming, allowing the same display to serve as a smart entertainment and productivity centre.
LG UltraGear 39GX90SA-W FAQ
What resolution does the LG 39GX90SA-W support?
The monitor has a native 3440 × 1440 WQHD resolution with a 21:9 UltraWide aspect ratio.
What is the refresh rate of the LG 39GX90SA-W?
It supports a maximum refresh rate of 240Hz with a 0.03ms GtG OLED response time.
How curved is the LG 39GX90SA-W?
It uses an immersive 800R curved OLED panel.
Does the LG 39GX90SA-W have webOS?
Yes. webOS is built in for compatible streaming services, LG Channels and supported cloud gaming services.
Does USB-C charge a laptop?
Yes. USB-C supports video, data transmission and up to 65W power delivery for compatible devices.
Does the LG 39GX90SA-W support G-SYNC and FreeSync?
Yes. It is NVIDIA G-SYNC Compatible and supports AMD FreeSync Premium and VESA Certified AdaptiveSync.
(39GX90SA-W)
LG UltraGear 39GX90SA-W Specifications
39-inch 240Hz WQHD 800R Curved OLED Smart Gaming Monitor
Display
| Screen Size | 39-inch / 99.1 cm |
|---|---|
| Panel Type | OLED |
| Aspect Ratio | 21:9 |
| Resolution | 3440 × 1440 WQHD |
| Curvature | 800R |
| Surface Treatment | Anti-Glare |
| Pixel Pitch | 0.266 × 0.266 mm |
| Colour Depth | 1.07 billion colours |
| Viewing Angle | 178° horizontal / 178° vertical |
Brightness, Colour and HDR
| Brightness | 275 cd/m² typical / 250 cd/m² minimum |
|---|---|
| Contrast Ratio | 1,500,000:1 typical / 1,200,000:1 minimum |
| Colour Gamut | DCI-P3 98.5% typical / 94% minimum, CIE1976 |
| HDR10 | Yes |
| VESA DisplayHDR | DisplayHDR True Black 400 |
| HDR Effect | Yes |
| Factory Colour Calibration | Yes |
Gaming Performance
| Maximum Refresh Rate | 240Hz |
|---|---|
| Response Time | 0.03ms GtG |
| NVIDIA G-SYNC | G-SYNC Compatible |
| AMD FreeSync | FreeSync Premium |
| VESA AdaptiveSync | Certified AdaptiveSync |
| Variable Refresh Rate | Yes |
| Dynamic Action Sync | Yes |
| Black Stabiliser | Yes |
| Crosshair | Yes |
| FPS Counter | Yes |
| User Defined Key | Yes |
Smart Features
| Smart Platform | webOS |
|---|---|
| LG Channels | Supported |
| Streaming Services | Compatible webOS streaming services supported |
| Cloud Gaming | Supported through compatible webOS services |
| AI Picture | Yes |
| Dynamic Tone Mapping | Yes |
| AI Personalised Picture Wizard | Yes |
| AI Sound | Yes |
| Remote Controller | Included |
Connectivity
| HDMI | 2 |
|---|---|
| HDMI Cable | Included, HDMI 2.1 |
| DisplayPort | 1 |
| DisplayPort Version | 1.4 with DSC |
| USB-C | 1 |
| USB-C Data Transmission | Yes |
| USB-C Power Delivery | Up to 65W |
| USB Downstream | 2 × USB 2.0 |
| USB Upstream | Via USB-C |
| LAN | RJ45 Ethernet |
| Headphone Output | 3-pole, sound only |
| Built-in KVM | No |
| Daisy Chain | No |
Multi-Source and Convenience Features
| Picture-in-Picture | Yes |
|---|---|
| Picture-by-Picture | 2PBP |
| Auto Brightness | Yes |
| Reader Mode | Yes |
| Smart Energy Saving | Yes |
| RGB Lighting | Hexagon Lighting |
| Auto Input Switch | No |
Audio
| Built-in Speakers | 7W × 2 |
|---|---|
| Bluetooth Connectivity | Yes |
Stand and Mounting
| Position Adjustments | Tilt / Height / Swivel |
|---|---|
| VESA Wall Mount | 100 × 100 mm |
Dimensions and Weight
| Dimensions With Stand | 887.8 × 605.7 × 322.8 mm |
|---|---|
| Dimensions Without Stand | 887.8 × 404.4 × 198.0 mm |
| Shipping Dimensions | 985 × 338 × 550 mm |
| Weight With Stand | 11.45 kg |
| Weight Without Stand | 7.30 kg |
| Shipping Weight | 17.5 kg |
Power
| Power Type | External adapter |
|---|---|
| AC Input | 100–240V, 50/60Hz |
| Sleep Mode | Less than 0.5W |
| DC Off | Less than 0.5W |
Included Accessories
| DisplayPort Cable | Included |
|---|---|
| HDMI Cable | Included, version 2.1 |
| USB-C Cable | Included |
| Remote Controller | Included |
Software and Product Information
| LG Dual Controller | No |
|---|---|
| LG Calibration Studio | No |
| LG UltraGear Studio | No |
| OnScreen Control | No |
| Model | 39GX90SA-W |
| Product Year | 2025 |
| Security Updates | Scheduled until 31 January 2029 |
| SKU | 39GX90SA-W |
| Brand | LG |
| Shipping Weight | 17.5000kg |
Manufacturer Warranty: 3 Years Manufacturer Warranty
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