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LG UltraGear™ 39-inch OLED 240Hz WQHD Curved Gaming Monitor | 0.03ms (GtG), DisplayHDR True Black 400, USB-C (PD 65W) & HDMI 2.1
LG UltraGear™ 39-inch OLED 240Hz WQHD Curved Gaming Monitor | 0.03ms (GtG), DisplayHDR True Black 400, USB-C (PD 65W) & HDMI 2.1
*Images have been simulated to enhance feature understanding, and may differ from actual use experience.
DISPLAY
39-inch WQHD OLED
21:9 UltraWide 800R
DisplayHDR True Black 400
& DCI-P3 98.5%
SPEED
0.03ms (GtG) Response Time
& 240Hz Refresh Rate
USB-C (PD 65W) & HDMI 2.1
AMD FreeSync™ Premium Pro
VESA Certified AdaptiveSync
NVIDIA® G-SYNC® Compatible
TECHNOLOGY
DTS HeadPhone:X
LG Switch
OnScreen Display
UltraWide view with deep black OLED
The 34-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.
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 optimized aspect ratio.
The 21:9 curved OLED monitor provides an immersive and captivating experience with a balanced and optimized aspect ratio.
*Images have been simulated to enhance feature understanding, and may differ from actual use experience.
The ideal curvature 800R
Immerse in the 800R curve for a consistent FOV (Field of View) on a desk designed to match 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.
*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.
Deeper 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 contrast ratio, DCI-P3 98.5% (typical) colour gamut 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.
Advanced eye comfort technologies
by three UL verifications
Featuring an anti-glare finish, LG WOLED’s advanced eye comfort technologies minimize 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.
Curved gaming monitor showing a robot character in a futuristic setting, with UL certifications below.
*All pictures shown are simulated for illustration purpose only.
*LG WOLED have been verified 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.
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.
A 34-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.
Smooth motion,
infinite play
Our monitor certified with ClearMR 13000, exceeding VESA testing with a Clear Motion Ratio of over 12500. It brings to captures the subtle blurring that occurs around the edges of moving objects, display fast-moving action with fine details.
Image of a green car racing on a track.
*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.
Advanced gaming features
•Low Latency reduces input lag for real-time response.
•Black Stabilizer 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.
Plunge into the world of PC and console gaming!
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 optimized gaming experience across various genres and platforms.
*Images have been simulated to enhance feature understanding, and may differ from actual use experience.
**Aspect ratio support may vary by console. Please adjust your display settings to ensure optimal gameplay performance.
*Headsets sold separately.
*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.
LG Switch app tutorial
Adjust your monitor settings effortlessly with LG Switch app.
*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.
Protecting OLED via On-Screen Display
Through On-Screen Display, you adjust OLED brightness and enable protection settings to prevent afterimages or burn-in, allowing you to enjoy superior OLED picture quality for longer. Plus, gamers can also easily customize their gaming setup for optimal performance.
*Images have been simulated to enhance feature understanding, and may differ from actual use experience.
Clutter-free, sleek design
The clutter-free L-stand and sleek design are crafted to save desk space and minimize 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.
*Images have been simulated to enhance feature understanding, and may differ from actual use experience.
SUMMARY
DIMENSIONS

All Spec
FEATURES
Reader Mode
YES
AMD FreeSync™
FreeSync Premium Pro
Auto Input Switch
YES
Black Stabilizer
YES
Color Calibrated in Factory
YES
Color Weakness
YES
Crosshair
YES
Dynamic Action Sync
YES
FPS Counter
YES
HDR 10
YES
HDR Effect
YES
HW Calibration
HW Calibration Ready
NVIDIA G-Sync™
G-SYNC Compatible
PBP
2PBP
PIP
YES
RGB LED Lighting
Unity Hexagon Lighting
Smart Energy Saving
YES
User Defined Key
YES
VESA DisplayHDR™
DisplayHDR True Black 400
VRR
YES
CONNECTIVITY
DisplayPort
YES(1ea)
DP Version
1.4 (DSC)
HDMI
YES(2ea)
Headphone out
4-Pole(Sound+Mic)
USB-C
YES(1ea)
USB-C (Data Transsmission)
YES
USB-C (Power Delivery)
65W
USB Downstream Port
YES(2ea/ver3.0)
DIMENSIONS/WEIGHTS
Dimension in Shiping (W x H x D) [mm]
985 x 338 x 550mm
Dimension without Stand (W x H x D) [mm]
887.8 x 404.4 x 198.0mm
Dimension with Stand (W x H x D) [mm]
887.8 x 605.7 x 322.8mm (UP) 887.8 x 495.7 x 322.8mm (Down)
Weight in Shipping [kg]
17.5kg
Weight without Stand [kg]
7.3kg
Weight with Stand [kg]
11.45kg
DISPLAY
Aspect Ratio
21:9
Brightness (Min.) [cd/m²]
250cd/㎡
Brightness (Typ.) [cd/m²]
275cd/m²
Color Depth (Number of Colors)
1.07B
Color Gamut (Min.)
DCI-P3 94% (CIE1976)
Color Gamut (Typ.)
DCI-P3 98.5% (CIE1976)
Contrast Ratio (Min.)
1200000:1
Contrast Ratio (Typ.)
1500000:1
Curvature
800R
Panel Type
OLED
Pixel Pitch [mm]
0.231 × 0.231 mm
Refresh Rate (Max.) [Hz]
240
Resolution
3440 x 1440
Response Time
0.03ms (GTG)
Size [cm]
99.1
Size [Inch]
39
Viewing Angle (CR≥10)
178º(R/L), 178º(U/D)
INFO
Product name
UltraGear
Year
Y25
MECHANICAL
Display Position Adjustments
Tilt/Height/Swivel
Wall Mountable [mm]
100 x 100mm
POWER
AC Input
100~240V (50/60Hz)
Power Consumption (DC Off)
Less than 0.3W
Power Consumption (Sleep Mode)
Less than 0.5W
Type
External Power(Adapter)
SOUND
DTS HP:X
YES
Speaker
7W x 2
SW APPLICATION
Dual Controller
YES
LG Calibration Studio (True Color Pro)
YES
What people are saying
FAQ
How to choose a gaming monitor?
Start with your priorities. Want crisp visuals? Go for 4K resolution. Need ultra-smooth motion? Prioritize a high refresh rate (144Hz or more) and low response time. If you're after deep contrast and color accuracy, consider OLED or Nano IPS, Nano IPS black panels. Don’t forget adaptive sync tech like NVIDIA G-SYNC or AMD FreeSync™ Premium to eliminate screen tearing. LG’s UltraGear™ series offers a range of gaming monitors tailored to your play style—from casual console gaming to high-intensity PC competition.
What is the refresh rate of a gaming monitor?
Refresh rate, calculated in Hertz (Hz), refers to how many displays are updated within one second. For example, a 120Hz indicates that the display refreshes 120 times per second. Gaming monitors with high refresh rates offer smoother visuals with less screen tearing.
How many hertz is good for gaming?
For most gamers, 144Hz is the sweet spot for fluid, responsive gameplay. Competitive players may want even faster refresh rates like 240Hz for that extra edge in fast-paced shooters or esports titles. LG’s lineup of UltraGear™ Gaming Monitors includes models that go from 144Hz to 240Hz and beyond (when used in dual mode, LG's models support 165Hz and 330Hz OR 240Hz and 480Hz)*, all designed to keep up with the action while minimizing lag and screen tearing.
It depends on what—and how—you play. Many gamers go with 144Hz for fluid, responsive gameplay. Competitive players may want faster refresh rates like 240Hz for that extra edge in fast-paced shooters or esports titles. LG’s lineup of UltraGear™ Gaming Monitors includes models that go from 144Hz to 240Hz and 480Hz, all designed to keep up with the action while minimizing lag and screen tearing.
*Actual refresh rates may vary depending on computer graphics specifications and configurations.
What are the differences between OLED, IPS, and VA panels?
OLED panels emit their own light at the pixel level, delivering near-perfect blacks, exceptional contrast, and vivid colors. They also offer ultra-fast response times, making them ideal for high-end gaming monitors, premium TVs, and professional video editing.
IPS panels are known for their accurate color reproduction and wide viewing angles, maintaining clear images from various positions. This makes them well-suited for office work, design, and gaming. Their excellent color accuracy is especially appealing to gamers who want to experience visuals exactly as the developers intended.
VA panels boast the highest contrast ratio among LCD types, providing an immersive experience for watching movies and videos. While not as fast as TN panels, they offer nearly comparable performance.
Should I get a curved monitor?
If you want a more immersive gaming experience, curved gaming monitors are a great choice. The curvature helps keep your eyes focused on the center of the screen naturally, which is great for long gaming sessions.
LG's UltraGear GX9 supports 800R curvature and a 21:9 ultrawide aspect ratio, delivering immersive visuals and an ideal viewing distance. At an 800mm viewing distance, its 800R curvature creates a viewing angle of 90 degrees across both the center and the edge—pulling you deeper into the game.
Is 1440p or 4K better for gaming?
Both have their strengths. For many gamers, 1440p (QHD) hits a sweet spot between resolution and performance, especially for competitive gaming where frame rate matters most. It’s easier to push higher FPS without overloading your GPU. 4K, on the other hand, is all about detail and immersion—perfect for single-player adventures or next-gen console play. LG’s UltraGear™ gaming monitors offer both QHD and 4K options, so whether you prioritize speed or stunning visuals, there’s a perfect fit for your setup.
Can I connect my monitor to my PC with a USB-C?
Connecting your gaming monitor via USB-C is simple—just plug one end of the cable into your device’s USB-C port, and you’re good to go. You can charge your laptop too if your PC is connected to your monitor with a USB-C port.
*Supported models may vary.
What is DisplayPort 2.1?
DisplayPort 2.1, the latest version of the DisplayPort standard, delivers ultra-fast data speeds for flawless high refresh rate gameplay. It is developed by VESA (Video Electronics Standards Association) to provide high-performance display connectivity for computers and monitors.
Many of LG’s latest models support DisplayPort 2.1*, which doubles the bandwidth of DP 1.4. That means you get higher resolutions, smoother frame rates, and lower latency—perfect for fast-paced gaming.
*Note: We have received numerous reports from users of NVIDIA 50-series graphics cards experiencing screens turning off when using DisplayPort 2.1 with 10-bit or 12-bit settings. If you are experiencing the same, as a temporary workaround, you can switch the DisplayPort input to 1.4 in your monitor's OSD menu or adjust the color setting to 8-bit in the NVIDIA Control Panel. This issue has been reported to NVIDIA for a more permanent solution.
What is HDMI 2.1?
With HDMI 2.1 supported, you’ll enjoy features like Variable Refresh Rate (VRR), Auto Low Latency Mode (ALLM), and support for 4K at up to 120Hz. Whether you’re gaming on a console or PC, these upgrades give you the flexibility and performance to match any setup.
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