39" LG UltraGear™ OLED Gaming Monitor, 240Hz Refresh Rate, WQHD Resolution, webOS, Response Time, White
Key Features
*Images have been simulated to enhance feature understanding, and may differ from actual use experience.
webOS
AI Picture
Dynamic Tone Mapping
AI Personalised Picture Wizard
AI Sound
39-inch WQHD Curved OLED
DisplayHDR True Black 400 & DCI-P3 98.5%
0.03ms (GtG) & 240Hz
ClearMR 13000
AMD FreeSync™ Premium
NVIDIA® G-SYNC® Compatible
USB-C (PD 65W) & HDMI 2.1
LG Switch app
Sleek design with clutter-free L stand
Introducing the 39-inch webOS-powered smart gaming monitor with LG AI, relaxing during game breaks with effortless streaming, including free LG Channels and numerous streaming options. Plus, access high-performance cloud gaming without a separate PC or console, all easily controlled with the remote for added convenience.
*Images have been simulated to enhance feature understanding, and may differ from actual use experience.
*Internet connection and subscription to related streaming services are required. Separate subscriptions or payments may be required, and they are not provided (purchased separately).
*Supported services may differ by country.
*Applies only to content produced in a 21:9 aspect ratio. For streaming content, platform restrictions may apply.
*The Remote Control is included in the package.
AI Picture
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.
Comparison images with AI Picture function on and off.
*Images have been simulated to enhance feature understanding, and may differ from actual use experience.
*Not available in PC connection and Game Optimiser mode.
Dynamic Tone Mapping
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.
*Images have been simulated to enhance feature understanding, and may differ from actual use experience.
*Available only when HDR video signal is input.
AI Personalised Picture Wizard
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.
*Images have been simulated to enhance feature understanding, and may differ from actual use experience.
AI 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.
*Images have been simulated to enhance feature understanding, and may differ from actual use experience.
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.
*Images have been simulated to enhance feature understanding, and may differ from actual use experience.
*Images have been simulated to enhance feature understanding, and may differ from actual use experience.
**Among LG OLED gaming monitors with MLA+. SDR brightness is 37.5% higher than our previous models (27GR95QE, 45GR95QE) based on published specifications.
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.
*Images have been simulated to enhance feature understanding, and may differ from actual use experience.
*The viewing experience may vary depending on the distance from the screen and the user's posture.
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, and Delta E ≦2 colour accuracy ensures that colours are displayed with realistic detail, just as originally intended.
*Images have been simulated to enhance feature understanding, and may differ from actual use experience.
*1.5M:1 is the contrast ratio at 25% APL (Average Picture Level) value which is given as a percentage and refers to the value between the black level and the reference level for white.
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.
Curved gaming monitor showing a robot character in a futuristic setting, with UL certifications below.
*Images have been simulated to enhance feature understanding, and may differ from actual use experience.
*LG OLED panels have been certified as Flicker-Free, Discomfort Glare Free, and Low Blue Light by UL.
*Certificate Number: Flicker-Free Display (OLED) - A196009, Discomfort Glare Free - V563481 (conditions of UGR less than 22), Low Blue Light Hardware Solution Platinum - V745051.
*The above feature may vary depending on the user’s computing environment or conditions.
*Images have been simulated to enhance feature understanding, and may differ from actual use experience.
With VESA ClearMR 13000 certification, experience every movement as sharp as a still image, thanks to dramatically reduced motion blur for unparalleled gaming clarity.
Image of a green car racing on a track.
*Images have been simulated to enhance feature understanding, and may differ from actual use experience.
Powered by AMD FreeSync™ Premium and NVIDIA-validated G-SYNC® compatibility, this monitor ensures tear-free, ultra-smooth visuals and low latency, delivering unmatched gaming precision and fluidity.
Logos of NVIDIA G-SYNC, AMD FreeSync Premium.
*Images have been simulated to enhance feature understanding, and may differ from actual use experience.
*The performance of the feature is compared to the models not applying the sync technology.
*Errors or delays may occur depending on the network connection.
•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.
*Images have been simulated to enhance feature understanding, and may differ from actual use experience.
*The Crosshair feature is unavailable while FPS Counter is activated.
*FPS Counter may display the value that exceeds the monitor’s maximum refresh rate.
*FPS (Frame Per Second) Counter: Measurement of frames per second.
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.
A 39-inch gaming monitor is positioned in the center of the desk, with various IT devices placed around it.
*Images have been simulated to enhance feature understanding, and may differ from actual use experience.
*To work properly, the USB-C cable is required to connect the USB-C port to the monitor.
*It supports up to QHD@240Hz refresh rate. To work properly, a graphic card that supports DP 1.4 or HDMI 2.1 cable is required.
*The graphics card is NOT included in the package.
*USB-C, DP, and HDMI cables are included in the package.
*Images have been simulated to enhance feature understanding, and may differ from actual use experience.
*To download the latest version of the LG Switch app, visit LG.com.
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.
Curved gaming monitor displaying an action-adventure game in a vibrant gaming setup with purple lighting and a PC tower nearby.
Swivel
Tilt
Height
Borderless design
*Images have been simulated to enhance feature understanding, and may differ from actual use experience.
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
Color Gamut (Min.)
DCI-P3 94% (CIE1976)
Color 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
Color 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 Color 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 Transsmission)
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
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 Shiping (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
D-Sub
NO
DVI-D
NO
HDMI
YES (ver 2.1)
Thunderbolt
NO
USB-C
YES
Display Port
YES
USB A to B
NO
Remote Controller
YES
Adapter
YES
Calibration Report (Paper)
YES
HDMI (Color/Length)
White / 1.5m
Power Cord
YES
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