LG UltraGear 34GX90SA-W 34" UWQHD 240Hz 0.03ms 800R Curved OLED webOS Smart Gaming Monitor - White - 34GX90SA-W
Model# 34GX90SA-W
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SKU: 34GX90SA-W
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LG UltraGear OLED 34GX90SA-W 34" 240Hz UWQHD Curved Gaming Monitor
Experience high-speed gaming and smart entertainment on one immersive display. The LG UltraGear 34GX90SA-W combines a 34-inch 21:9 OLED panel with an aggressive 800R curve, 3440 × 1440 resolution, 240Hz refresh rate and ultra-fast 0.03ms GtG response time, plus built-in webOS for streaming and cloud gaming without a connected PC.
Immersive 34-inch UltraWide OLED gaming
3440 × 1440 UltraWide resolution
The 21:9 WQHD display provides a wider field of view than a conventional 16:9 screen, creating more room for immersive games, entertainment and multi-window desktop use.
Deep 800R curvature
The aggressive 800R curve wraps the expansive 34-inch OLED panel around your viewing position for an immersive gaming experience that places more of the screen within your natural field of view.
OLED contrast and deep blacks
OLED technology delivers individually controlled pixels and a typical contrast ratio of 1,500,000:1 for deep blacks, bright highlights and detailed dark scenes.
Anti-glare OLED panel
The anti-glare surface helps minimise distracting reflections and supports clearer viewing across different lighting environments.
Built for high-speed competitive gaming
240Hz refresh rate
A maximum 240Hz refresh rate delivers exceptionally smooth motion and rapid visual updates for fast-paced shooters, racing games and competitive gameplay.
0.03ms GtG response time
The OLED panel delivers a 0.03ms GtG response time for extremely fast pixel transitions and sharp motion during high-speed gaming.
Three major adaptive sync technologies
NVIDIA G-SYNC Compatible, AMD FreeSync Premium and VESA AdaptiveSync support help reduce tearing and stuttering for smooth variable-refresh-rate gaming.
Advanced gaming tools
Dynamic Action Sync, Black Stabiliser, Crosshair and FPS Counter provide useful on-screen tools for responsive play, visibility and real-time performance monitoring.
Vivid HDR and wide-gamut colour
DisplayHDR True Black 400
VESA DisplayHDR True Black 400 certification takes advantage of OLED's deep black levels to reveal detail and contrast in dark gaming and cinematic scenes.
DCI-P3 98.5%
DCI-P3 98.5% typical colour gamut coverage and support for 1.07 billion colours provide rich and detailed colour reproduction.
HDR10 and HDR Effect
HDR10 support enables compatible high-dynamic-range content, while HDR Effect provides additional options for enhancing supported SDR viewing.
Factory calibrated
The monitor is colour calibrated at the factory to provide a consistent visual experience straight out of the box.
Gaming monitor and smart entertainment hub
webOS built in
Integrated webOS provides access to compatible streaming services, LG Channels and cloud gaming services without requiring a separate PC or console for supported content.
AI Picture and Dynamic Tone Mapping
Smart picture processing can enhance detail, depth, brightness and contrast when using supported webOS content and viewing modes.
AI Personalised Picture Wizard
The Personalised Picture Wizard helps tailor supported webOS picture settings according to your visual preferences.
AI Sound and built-in speakers
Integrated 7W × 2 speakers and AI Sound provide convenient audio for gaming and entertainment, while Bluetooth connectivity supports compatible wireless audio devices.
Flexible connectivity for gaming and work
HDMI 2.1 connectivity
Dual HDMI connections provide high-bandwidth connectivity for compatible gaming systems and computers, with an HDMI 2.1 cable included in the box.
DisplayPort 1.4 with DSC
DisplayPort 1.4 with Display Stream Compression supports high-resolution, high-refresh-rate PC gaming with compatible graphics hardware.
USB-C with 65W power delivery
USB-C supports display, data transmission and up to 65W power delivery, allowing compatible laptops to connect and charge through a single cable.
RJ45 and USB connectivity
Built-in RJ45 networking and two USB downstream ports provide additional connectivity for compatible devices and peripherals.
A flexible setup beyond gaming
Picture-in-Picture
Picture-in-Picture support allows a secondary source to be viewed within the main screen for flexible multi-source viewing.
2-way Picture-by-Picture
2PBP support allows content from two compatible sources to be displayed side by side across the UltraWide screen.
Height, tilt and swivel adjustment
The space-efficient L-style stand supports height, tilt and swivel adjustment so the display can be positioned to suit your gaming or working environment.
VESA mounting support
A 100 × 100 mm VESA mounting pattern allows the monitor to be paired with a compatible monitor arm or wall mounting solution.
Why Choose the LG UltraGear 34GX90SA-W?
The LG UltraGear 34GX90SA-W brings together the speed of a 240Hz OLED gaming monitor and the convenience of a webOS smart display. Its 800R UltraWide screen, 0.03ms response time and broad adaptive-sync support make it a strong centrepiece for high-performance gaming.
When the gaming session ends, built-in streaming, speakers, Bluetooth, USB-C power delivery and network connectivity allow the same monitor to serve as an entertainment and productivity display without filling the desk with additional equipment.
LG UltraGear 34GX90SA-W FAQ
What resolution does the LG 34GX90SA-W support?
It has a native 3440 × 1440 WQHD resolution with a 21:9 UltraWide aspect ratio.
What is the refresh rate of the LG 34GX90SA-W?
The monitor supports a maximum refresh rate of 240Hz with a 0.03ms GtG OLED response time.
How curved is the LG 34GX90SA-W?
It uses an immersive 800R curved OLED panel.
Does the LG 34GX90SA-W have webOS?
Yes. webOS is built into the monitor for compatible streaming services, LG Channels and cloud gaming services.
Does USB-C charge a laptop?
Yes. The USB-C connection supports display, data transmission and up to 65W power delivery for compatible devices.
Does the LG 34GX90SA-W support G-SYNC and FreeSync?
Yes. It is NVIDIA G-SYNC Compatible and supports AMD FreeSync Premium and VESA AdaptiveSync.
(34GX90SA-W)
LG UltraGear 34GX90SA-W Specifications
34" 240Hz WQHD 800R Curved OLED Smart Gaming Monitor with webOS
Display
| Screen Size | 34-inch / 86.2 cm |
|---|---|
| Panel Type | OLED |
| Aspect Ratio | 21:9 |
| Resolution | 3440 × 1440 WQHD |
| Curvature | 800R |
| Surface Treatment | Anti-glare |
| Pixel Pitch | 0.231 × 0.231 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 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 | Supported |
| 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 |
|---|---|
| Streaming Support | LG Channels and compatible streaming services |
| 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 | DP 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 |
| Reader Mode | Yes |
| Auto Brightness | Yes |
| Smart Energy Saving | Yes |
| RGB Lighting | Hexagon Lighting |
Audio
| Built-in Speakers | 7W × 2 |
|---|---|
| Bluetooth Audio | Yes |
Stand and Mounting
| Stand Adjustments | Tilt / Height / Swivel |
|---|---|
| VESA Wall Mount | 100 × 100 mm |
Dimensions and Weight
| With Stand, Up | 784.1 × 580.4 × 291.8 mm |
|---|---|
| With Stand, Down | 784.1 × 470.4 × 291.8 mm |
| Without Stand | 784.1 × 358.3 × 167.1 mm |
| Shipping Dimensions | 927 × 295 × 550 mm |
| Weight With Stand | 10.4 kg |
| Weight Without Stand | 6.2 kg |
| Shipping Weight | 15.5 kg |
Power and Included Accessories
| Power Type | External adapter |
|---|---|
| AC Input | 100–240V, 50/60Hz |
| Sleep Mode | Less than 0.5W |
| DC Off | Less than 0.5W |
| DisplayPort Cable | Included |
| HDMI Cable | Included, version 2.1 |
| USB-C Cable | Included |
| Remote Controller | Included |
| Power Cord | Included |
Product Information
| Model | 34GX90SA-W |
|---|---|
| Product Year | 2025 |
| Security Updates | Eligible for security updates until 31 January 2029 |
| SKU | 34GX90SA-W |
| Barcode # | 8806096479438 |
| Brand | LG |
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