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

Manufacturer: LG | Model: 39GX90SA-W.AEK | Product ID: 3284
£1341.86 (inc. VAT)
5 in stock
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Product Technical Specification

The 39-inch WQHD (3440x1440) display offers a 34% wider view than standard 169 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 219 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 169 aspect ratio, please ensure your display settings are configured accordingly for optimal gaming performance.

Delivery Options

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Economy Delivery (UK)

Estimated delivery date: Sun 07th Dec 2025 to Wed 10th Dec 2025
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Estimated delivery date: Sat 06th Dec 2025 to Mon 08th Dec 2025
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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

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Picture for

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 169 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 219 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 169 aspect ratio, please ensure your display settings are configured accordingly for optimal gaming performance.

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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.

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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.

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Our available delivery options*

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*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.