LG UltraGear GX9s 39GX90SA-W 39" WOLED 3440x1440 240Hz 0.03ms G-Sync Compatible USB-C HDMI 2.1 800R Curved Ultrawide Smart Gaming Monitor
Product Technical Specification
| The 39-inch WQHD (3440x1440) display offers a 34% wider view than standard 16 | 9 screens, delivering sharp and clear visuals across the expansive display. This WQHD OLED represents boldly darker shadows, brighter lights, and vibrant colours for gameplay in any environment. |
| The 21 | 9 curved OLED monitor provides an immersive and captivating experience for both gaming and various entertainment content, thanks to its balanced and optimised aspect ratio. |
| *PS5 and Xbox consoles support only a 16 | 9 aspect ratio, please ensure your display settings are configured accordingly for optimal gaming performance. |
Delivery Options
Economy Delivery (UK)
Business Express
39" LG UltraGear™ OLED Gaming Monitor, 39GX90SA-W, 240Hz Refresh Rate, WQHD Resolution, webOS, Response Time, White.
39" UltraGear™ OLED WQHD 240Hz 0.03ms 800R Curved Gaming Monitor with webOS – 39GX90SA
STREAMING
- webOS
- AI Picture
- Dynamic Tone Mapping
- AI Personalised Picture Wizard
- AI Sound
WINNING
- 39-inch WQHD Curved OLED
- DisplayHDR True Black 400 & DCI-P3 98.5%
- 0.03ms (GtG) & 240Hz
- AMD FreeSync™ Premium
- VESA Certified AdaptiveSync
- NVIDIA® G-SYNC® Compatible
CONNECTING
- USB-C (PD 65W) & HDMI 2.1
- LG Switch app
- Sleek design with clutter-free L stand
The webOS-powered smart gaming monitor
Introducing the smart gaming monitor, powered by webOS with AI, allowing you to relax during game breaks with effortless streaming1), including free LG Channels and numerous streaming options. Plus, access high-performance cloud gaming1) without a separate PC or console, all easily controlled with the remote2) for added convenience.
The Gaming Portal is now open
The Gaming Portal is a gaming-friendly platform that offers a tailored experience, with options to select menus for gamepads or remote controls and support for personalised gamification. You can track rankings and points among players, while easily accessing a wide range of titles, from AAA to social games. With partnerships with leading cloud gaming services like GeForce NOW, Amazon Luna, and soon Xbox Cloud, along with native webOS app games, it allows gaming without the need for external consoles or devices, delivering the ultimate gaming experience.
AI Picture
Sharper characters, enhanced realism
With AI Picture, it delivers lifelike game visuals that highlight faces and bodies, reduce noise, and add depth. Every detail, from subtle expressions to enemy movements, is easy to catch, ensuring a focused screen for total immersion in gaming or streaming.
Come alive with brightness and contrast
Enjoy visuals as they were meant to be seen, with Dynamic Tone Mapping adjusting brightness and contrast for optimal detail and realism. Movies and games come alive with rich immersion and consistent quality across all content.
Detect, distinguish, fine-tuned sound
Detects your space and delivers perfectly tuned audio through a simulated 9.1 channel setup, pinpointing sound locations for a tactical edge without the need for extra speakers or headsets. Also, it distinguishes the gamer's voice from ambient sound, adjusting voice levels and clarity to keep you focused on your game.
UltraWide view with deep black OLED
The 39-inch WQHD (3440x1440) display offers a 34% wider view than standard 16:9 screens, delivering sharp and clear visuals across the expansive display. This WQHD OLED represents boldly darker shadows, brighter lights, and vibrant colours for gameplay in any environment.
Go wide. Not short.
The 21:9 UltraWide sweet spot for gaming
The 21:9 curved OLED monitor provides an immersive and captivating experience for both gaming and various entertainment content, thanks to its balanced and optimised aspect ratio.
The ideal curvature is 800R
Immerse yourself in the 800R curved screen, designed to match your natural sight, placing you at the core of its curvature. With a consistent 90-degree viewing angle across the entire screen, it delivers vivid, distortion-free graphics as you explore the gaming universe.
Deeper black
Experience unparalleled depth and vibrant realism with VESA DisplayHDR true black 400, delivering detailed black expression even in the darkest scenes. With a 1.5M contrast ratio, DCI-P3 98.5% (typical) colour gamut ensures that colours are displayed with realistic detail, just as originally intended.
Advanced eye comfort technologies by three UL verifications
Featuring an anti-glare finish, LG WOLED’s advanced eye comfort technologies minimise frustrating reflections and keep your eyes comfortable, delivering crystal-clear gaming performance with consistent clarity. With UL verifications in key areas - limiting harmful blue light exposure and preventing distractions from flickering lights - these technologies promote visual comfort and contribute to a smoother gaming experience, whether you’re gaming in bright environments or LED-lit rooms.
Certified with a widely adopted technology
Powered by AMD FreeSync™ Premium, NVIDIA-validated G-SYNC® compatibility, and VESA AdaptiveSync™ certification, this monitor ensures tear-free, ultra-smooth visuals and low latency, delivering unmatched gaming precision and fluidity.
Advanced gaming features
- Low Latency reduces input lag for real-time response.
- Black Stabiliser brightens dark scenes, helping gamers spot enemies and details.
- Crosshair enhances precision for deadly accuracy.
- FPS Counter shows your real-time frame rate.
Plunge into a multitude of games
LG UltraGear™ monitors deliver smooth, responsive gameplay for both PC and console, whether you're diving into fast-paced action or exploring vast open worlds. With HDMI 2.1 support, they offer flexible compatibility - from keyboard and mouse to joystick - along with fluid motion, low latency, and vibrant details for an optimised gaming experience across various genres and platforms.
A curved gaming monitor shows a racing game with a red supercar in a neon-lit city. Other game scenes float around the screen. A white console controller is placed in front, highlighting console play.
*PS5 and Xbox consoles support only a 16:9 aspect ratio, please ensure your display settings are configured accordingly for optimal gaming performance.
Tap anchor-connecting
All-in-One USB-C for responsive gaming
Connect your laptop to the monitor with a USB-C cable for up to 65W power delivery, eliminating the need for a separate adapter. Enjoy WQHD resolution and a 240Hz refresh rate via DP 1.4 or HDMI 2.1, ensuring your gaming remains uninterrupted.
Easy to optimise effortlessly with LG Switch
The LG Switch app optimises your monitor for both work and life. You can easily split the display into up to 11 options, change the theme design, or launch a video call platform with a mapped hotkey. Plus, you can quickly navigate and select smart functions with the keyboard and mouse, while seamlessly switching between your PC and webOS using shortcut keys.
LG Switch app tutorial
Adjust your monitor settings effortlessly with LG Switch app.
Clutter-free, sleek design
The clutter-free L-stand and sleek design are crafted to save desk space and minimise dead zones, making your setup clean and efficient. Experience hexagon lighting and a virtually borderless 4-sided design, paired with a fully adjustable base for swivel, tilt, and height adjustments.
For more information on curved monitors, check out our Gaming Monitor Guide on the Overclockers UK Blog or speak to our friendly sales team.
Specifications<
| Product name | 39GX90SA-W |
| Year | 2025 |
| Size [Inch] | 39 |
| Size [cm] | 99.1 |
| Resolution | 3440 x 1440 |
| Panel Type | OLED |
| Aspect Ratio | 21:9 |
| Pixel Pitch [mm] | 0.266 x 0.266mm |
| Colour Gamut (Min.) | DCI-P3 94% (CIE1976) |
| Colour Gamut (Typ.) | DCI-P3 98.5% (CIE1976) |
| Color Depth (Number of Colors) | 1.07B |
| Contrast Ratio (Min.) | 1200000:1 |
| Contrast Ratio (Typ.) | 1500000:1 |
| Response Time | Less than 1ms GtG |
| Refresh Rate (Max.) [Hz] | 240 |
| Viewing Angle (CR≥10) | 178º(R/L), 178º(U/D) |
| Curvature | 800R |
| Brightness (Min.) [cd/m²] | 250cd/m² |
| Brightness (Typ.) [cd/m²] | 275cd/m² |
| Colour Bit | 10bit |
| HDR 10 | YES |
| Dolby Vision™ | NO |
| VESA DisplayHDR™ | DisplayHDR™400 TRUE BLACK |
| HDR Effect | YES |
| Mini-LED Technology | NO |
| Nano IPS™ Technology | NO |
| Advanced True Wide Pol. | NO |
| Color Calibrated in Factory | YES |
| HW Calibration | NO |
| Auto Brightness | YES |
| Flicker Safe | NO |
| Reader Mode | YES |
| Colour Weakness | NO |
| Super Resolution+ | NO |
| Motion Blur Reduction Tech | NO |
| NVIDIA G-Sync™ | G-SYNC Compatible |
| AMD FreeSync™ | FreeSync Premium |
| VRR | YES |
| Black Stabilizer | YES |
| Dynamic Action Sync | YES |
| Crosshair | YES |
| FPS Counter | YES |
| Overclocking | NO |
| User Defined Key | YES |
| Auto Input Switch | NO |
| RGB LED Lighting | Hexagon Lighting |
| PBP | 2PBP |
| PIP | YES |
| Smart Energy Saving | YES |
| Camera | NO |
| Mic | NO |
| Others (Features) | NO |
| LG Calibration Studio (True Colour Pro) | NO |
| Dual Controller | NO |
| OnScreen Control (LG Screen Manager) | NO |
| LG UltraGear™ Studio | NO |
| D-Sub | NO |
| DVI-D | NO |
| HDMI | YES(2ea) |
| DisplayPort | YES(1ea) |
| DP Version | 1.4 (DSC) |
| Thunderbolt | NO |
| USB-C | YES(1ea) |
| USB-C (Max. Resolution at Hz) | 3440x1440@240Hz |
| USB-C (Data Transmission) | YES |
| USB-C (Power Delivery) | 65W |
| Daisy Chain | NO |
| USB Upstream Port | YES(via USB-C) |
| USB Downstream Port | YES(2ea/ver2.0) |
| Built-in KVM | NO |
| LAN (RJ-45) | YES |
| SPDIF out (Optical Digital Audio Out) | NO |
| Audio In | NO |
| Mic In | NO |
| Headphone out | 3-pole (Sound Only) |
| Line out | NO |
| Speaker | 7W x 2 |
| DTS HP:X | NO |
| Maxx Audio | NO |
| Rich Bass | NO |
| Bluetooth Connectivity | YES |
| Power Type | External Power (Adapter) |
| AC Input | 100~240V (50/60Hz) |
| Power Consumption (Sleep Mode) | Less than 0.5W |
| Power Consumption (DC Off) | Less than 0.5W |
| DC Output | 13.5A |
| Display Position Adjustments | Tilt/Height/Swivel |
| Dimension with Stand (W x H x D) [mm] | 887.8 x 605.7 x 322.8mm |
| Dimension without Stand (W x H x D) [mm] | 887.8 x 404.4 x198.0mm |
| Dimension in Shipping (W x H x D) [mm] | 985 x 338 x 550mm |
| Weight with Stand [kg] | 11.45kg |
| Weight without Stand [kg] | 7.30kg |
| Weight in Shipping [kg] | 17.5kg |
| Cables | HDMI 2.1 USB-C Display Port |
| Remote Controller | YES |
| Adapter | YES |
| Calibration Report (Paper) | YES |
| HDMI (Color/Length) | White / 1.5m |
| Power Cord | YES |
| The 39-inch WQHD (3440x1440) display offers a 34% wider view than standard 16 | 9 screens, delivering sharp and clear visuals across the expansive display. This WQHD OLED represents boldly darker shadows, brighter lights, and vibrant colours for gameplay in any environment. |
| The 21 | 9 curved OLED monitor provides an immersive and captivating experience for both gaming and various entertainment content, thanks to its balanced and optimised aspect ratio. |
| *PS5 and Xbox consoles support only a 16 | 9 aspect ratio, please ensure your display settings are configured accordingly for optimal gaming performance. |
Buykingston order despatch times:
We will despatch your order the very same day if we receive cleared payment by 12:00 pm Mon-Fri.
These delivery estimates apply when you order up to 12:00 pm Mon-Fri (excluding public holidays).
We charge a one off delivery cost as outlined below regardless of how many items you order or the weight of your order.
Estimated delivery times are provided to us by the respective delivery companies. We pass this information onto you, the customer.
Despatch times do not apply to UK public holidays.
Estimated delivery times are taken from the next available working day available for delivery. For example if an order was despatched on a working Wednesday by 3pm, the first available working day for delivery would be Thursday provided you placed your order by 3pm on the Wednesday. If the next available weekday is a UK bank holiday/public holiday then your order will be despatched on the next available working day.
Our warehouse reserves the right to upgrade the delivery method you select on your order.
Our available delivery options*
Contact us for a shipping quote.
*All delivery times are estimated unless stated.
Product Returns Note
Buykingston offers a very flexible and hassle free returns policy. If
for whatever reason you are not happy with the item purchased you can return
it to us within 12months for a refund (for unused and unopened
items) or within 30 days on opened and used items for a refund. This
applies to items purchased direct through Buykingston only.
Our 30 Day Returns Money Back Guarantee Satisfaction
Guarantee:
For items opened and used and that are returned in a resellable
condition.
Our 365 Day Returns Money Back Guarantee Satisfaction
Guarantee:
For items that remain sealed and unused.
Some items are excluded from our moneyback guarantee unless they have developed a fault. These include;
- Headphones
- Earphones
- Custom made and designed products such as flash memory products with
custom logo’s on them. E,g USB flash drives and memory cards with your own
logo
Returns FAQs
What is your returns criteria?
On opened items 30 days from date of receipt or expected date of receipt on
non tracked items.
On unopened items 365 days.
How do i go about returning my order?
Please contact us via our contact page with
your order number where we will present you with an RMA number and returns
label.
Do i need to contact you before returning my order?
Yes, to obtain an RMA number.
Does my item have to include its original packaging?
Yes for items that fall within our 30 day money back guarantee and our 365
day returns. Of course for faulty items we realise you may no longer have
the packaging.
Who deals with the warranty on a faulty item?
We will. In some circumstances we may ask you to contact the manufacturer
direct for assistance.
Please ensure you have read and comply in full with Section 11 & 13 of our terms and conditions which you can read here in full.