LG 39GX90SA-W.AAU computer monitor 99.1 cm (39") 3440

Display
Display brightness (typical)	275 cd/m Â²
Screen shape	Curved
Display number of colours	1.07 billion colours
Native aspect ratio	21:9
Maximum refresh rate	240 Hz
Display diagonal	99.1 cm (39")
Display resolution	3440 x 1440 pixels
Display technology	OLED
Contrast ratio (typical)	1500000:1
Viewing angle, horizontal	178 Â°
Viewing angle, vertical	178 Â°
Pixel pitch	0.266 x 0.266 mm
HD type	Wide Quad HD
Response time (fast)	0.03 ms
Touchscreen	No
High Dynamic Range (HDR) supported	Yes
Panel type	OLED
DCI-P3 coverage	98.5%
High Dynamic Range (HDR) technology	DisplayHDR 400 True Black, Dynamic Tone Mapping
Screen curvature rating	800R
Display diagonal (metric)	99.1 cm
Anti-glare screen	Yes
Performance
NVIDIA G-SYNC type	G-SYNC Compatible
AMD FreeSync type	FreeSync Premium
AMD FreeSync	Yes
Game mode	Yes
NVIDIA G-SYNC	Yes
Operating system installed	webOS
VESA Adaptive Sync support	Yes
Low Blue Light technology	Yes
Flicker-free technology	Yes
Brand specific technologies	Black Stabiliser, Crosshair
FPS counter	Yes
Picture processing technology	LG AI Picture
Multimedia
Number of speakers	2
Built-in speaker(s)	Yes
Built-in camera	No
RMS rated power	14 W
Design
Market positioning	Gaming
Product colour	White
Illuminated stand	Yes
Ports & interfaces
Built-in USB hub	Yes
USB Type-A downstream ports quantity	2
HDMI ports quantity	2
DisplayPorts quantity	1
Headphone out	Yes
HDMI	Yes
HDMI version	2.1
DisplayPort version	1.4
USB Power Delivery (USB PD)	Yes
USB Power Delivery up to	65 W
Number of USB Type-C upstream ports quantity	1
Bluetooth	Yes
Ethernet LAN	Yes
Network
Bluetooth	Yes
Ethernet LAN	Yes
Ergonomics
VESA mounting	Yes
Panel mounting interface	100 x 100 mm
Swivelling	Yes
Height adjustment	Yes
Pivot	Yes
Tilt adjustment	Yes
Power
AC input voltage	220 - 240 V
Power consumption (off)	0.5 W
Energy efficiency scale	A to G
Energy efficiency class (SDR)	G
Energy efficiency class (HDR)	G
Energy consumption (SDR) per 1000 hours	40 kWh
Energy consumption (HDR) per 1000 hours	46 kWh
Weight & dimensions
Width (with stand)	887.8 mm
Depth (with stand)	322.8 mm
Height (with stand)	605.7 mm
Width (without stand)	887.8 mm
Height (without stand)	404.4 mm
Depth (without stand)	198 mm
Weight (with stand)	11.4 kg
Weight (without stand)	7.3 kg
Package width	985 mm
Package depth	550 mm
Package height	338 mm
Package weight	17.5 kg
Packaging data
Package width	985 mm
Package depth	550 mm
Package height	338 mm
Package weight	17.5 kg
Remote control included	Yes
Cables included	DisplayPort, HDMI, USB Type-C
Packaging content
Remote control included	Yes
Cables included	DisplayPort, HDMI, USB Type-C
Thin Client
Operating system installed	webOS
Other features
DCI-P3 coverage	98.5%
Brand specific technologies	Black Stabiliser, Crosshair
FPS counter	Yes
Picture processing technology	LG AI Picture
Game mode	Yes
Bluetooth	Yes
Remote control included	Yes
Width (without stand)	887.8 mm
Height (without stand)	404.4 mm
HDMI	Yes
Depth (without stand)	198 mm
USB Power Delivery up to	65 W
Energy efficiency scale	A to G
Ethernet LAN	Yes
Touchscreen	No
USB Power Delivery (USB PD)	Yes
Technical details
Game mode	Yes
Weight (with stand)	11.4 kg
Touchscreen	No

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The webOS-powered smart gaming monitor
Introducing the 39-inch webOS-powered smart gaming monitor with LG AI. Relax during game breaks with effortless streaming of your favourite content on free LG Channels and numerous streaming option. Plus, access high-performance cloud gaming without a separate PC or console, all easily controlled with the remote for added convenience.


AI Picture

Sharp characters, enhanced realism
AI Picture 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.


Dynamic Tone Mapping

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.


AI Personalised Picture Wizard

Crafted for your taste
Pick an image you like, and AI Personalised Picture Wizard will find your perfect match from 85 million choices, saving it to your profile. Get ready to level up your gaming and video experience with a look that's uniquely you.


AI Sound

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. While gaming in any setting, this WQHD OLED monitor displays bold and dark shadows, bright lighting and vibrant colours.


Brighter OLED
Experience stunning visuals with LG WOLED. Built on LG's OLED leadership and featuring Micro Lens Array+ (MLA+) technology, it delivers up to 37.5% brighter SDR, optimising light efficiency and minimising loss. It represents a standard luminosity of 275 nits (APL 100%) and a peak brightness of 1300 nits (APL 1.5%), ensuring vivid, true-to-life colours for immersive, precise gaming even in bright environments.


Go wide, not short.

The 21:9 UltraWide sweet spot for gaming
No more fisheye experience to see both sides of any 32:9 ratio panel at once. Thanks to the balanced and optimised aspect ratio, the 21:9 curved OLED monitor provides an immersive experience for both gaming and other forms of entertainment content.


The ideal curvature 800R
Immerse in the 800R curve designed to match natural sight, placing you at the core of its curvature. Dive into vivid, distortion-free graphics as you explore the gaming universe.


Deep black, realistic colour
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:1 contrast ratio, DCI-P3 98.5% (typical) colour gamut ensures that colours are displayed with realistic detail, just as originally intended.


Advanced anti-glare technology certified by triple UL
LG WOLED’s advanced anti-glare technology minimises frustrating reflections and distractions, delivering crystal-clear gaming performance by maintaining consistent clarity in any lighting. Additionally, with Triple UL certification for reducing harmful blue light while preserving vivid colour tones and lifelike visuals, it provides visual comfort and a smoother gaming experience–whether you’re gaming in bright environments or LED-lit rooms.


0.03ms (GtG) speed, 240Hz smooth gameplay
A swift 0.03ms (GtG) response and a rapid 240Hz refresh rate reduce reverse ghosting for crystal-clear, fluid visuals. Dive into more immersive gameplay with every frame.


Certified with widely utilised technologies
Powered by AMD FreeSync™ Premium, NVIDIA-validated G-SYNC Â® compatibility, and VESA AdaptiveSync™ certification, this monitor ensures tear-free, ultra-smooth visuals and low latency, delivering unmatched gaming precision and fluidity.


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.


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.


Sleek, clutter-minimising design
The L-stand is crafted to save desk space and minimise dead zones, making your setup clean and efficient.