LG 39GX90SA-W.AAU 39″ 240Hz Monitor

39 inch · 3440 x 1440 · 240 Hz · OLED

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Screen size 39 inch
Resolution 3440 x 1440
Refresh rate 240 Hz
Panel OLED
Response time 0.03 ms

LG 39GX90SA-W.AAU 39″ 240Hz Monitor is a 39-inch monitor with 3440 x 1440 resolution, a 240 Hz refresh rate and OLED panel. The high refresh rate makes fast games look smoother. It came out in 2025.

Released: 2025-05-31

Specifications

Key specs

Screen size: 39 inch
Resolution: 3440 x 1440
Refresh rate: 240 Hz
Panel: OLED
Response time: 0.03 ms
Released: 2025-05-31
Part number: 39GX90SA-W.AAU

Display

Display diagonal: 99.1 cm (39")
Display resolution: 3440 x 1440 pixels
HD type: Wide Quad HD
Native aspect ratio: 21:9
Display technology: OLED
Panel type: OLED
Display brightness (typical): 275 cd/m²
Response time: 1 ms
Response time measurement type: GTG (Gray to Gray)
Anti-glare screen: Yes
Screen shape: Curved
Screen curvature rating: 800R
Contrast ratio (typical): 1500000:1
Maximum refresh rate: 240 Hz
Viewing angle, horizontal: 178°
Viewing angle, vertical: 178°
Display number of colours: 1.07 billion colours
Response time (fast): 0.03 ms
Pixel pitch: 0.266 x 0.266 mm
Display diagonal (metric): 99.1 cm
High Dynamic Range (HDR) supported: Yes
High Dynamic Range (HDR) technology: DisplayHDR 400 True Black, Dynamic Tone Mapping
DCI-P3 coverage: 98.5%

Performance

NVIDIA G-SYNC: Yes
NVIDIA G-SYNC type: G-SYNC Compatible
AMD FreeSync: Yes
AMD FreeSync type: FreeSync Premium
VESA Adaptive Sync support: Yes
Flicker-free technology: Yes
Low Blue Light technology: Yes
Game mode: Yes

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Multimedia

Number of speakers: 2
RMS rated power: 14 W
Built-in speaker(s): Yes

Design

Market positioning: Gaming
Product colour: White
Illuminated stand: Yes

Ports & interfaces

Built-in USB hub: Yes
Number of USB Type-C upstream ports quantity: 1
USB Type-A downstream ports quantity: 2
USB Power Delivery (USB PD): Yes
USB Power Delivery up to: 65 W
HDMI: Yes
HDMI ports quantity: 2
HDMI version: 2.1
DisplayPorts quantity: 1
DisplayPort version: 1.4
Headphone out: Yes

Network

Bluetooth: Yes
Ethernet LAN: Yes

Ergonomics

VESA mounting: Yes
Panel mounting interface: 100 x 100 mm
Height adjustment: Yes
Swivelling: Yes
Tilt adjustment: Yes

Power

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
Power consumption (off): 0.5 W
AC input voltage: 220 - 240 V
Energy efficiency scale: A to G

Weight & dimensions

Width (with stand): 887.8 mm
Depth (with stand): 322.8 mm
Height (with stand): 605.7 mm
Weight (with stand): 11.4 kg
Width (without stand): 887.8 mm
Depth (without stand): 198 mm
Height (without stand): 404.4 mm
Weight (without stand): 7.3 kg

Other features

Brand specific technologies: Black Stabiliser, Crosshair
Picture processing technology: LG AI Picture
FPS counter: Yes

Check the manufacturer's page before buying.

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About this product

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.

39GX90SA-W.AAU vs similar monitors

	LG 39GX90SA-W.AAU 39″ 240Hz Monitor	LG 45GX90SA-B 45″ 240Hz Monitor	LG 32GX870B-B 32″ 240Hz Monitor	LG 32GX870B-B.AEU 32″ 240Hz Monitor
Screen size	39 inch	45 inch	32 inch	32 inch
Resolution	3440 x 1440	3440 x 1440	3840 x 2160	3840 x 2160
Refresh rate	240 Hz	240 Hz	240 Hz	240 Hz
Panel	OLED	OLED	OLED	OLED
Response time	0.03 ms	0.03 ms	0.03 ms	0.03 ms
Released	2025	2026	2026	2026