LG - UltraGear 39" OLED Curved WQHD 240Hz 0.03ms G-Sync/FreeSync Premium Smart Gaming Monitor with DisplayHDR 400 TRUE BLACK - White
LG - UltraGear 39" OLED Curved WQHD 240Hz 0.03ms G-Sync/FreeSync Premium Smart Gaming Monitor with DisplayHDR 400 TRUE BLACK - White
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Highlights
- Key Specs
- Refresh Rate: 240Hz (The number of frames per second the device can produce natively without enhancement. Higher rates help produce smooth, seamless pictures.)
- Maximum Resolution: 3440 x 1440 (Maximum resolution refers to the highest number of pixels that a screen can process and display. Higher resolution signals produce more detailed images.)
- Response Time: 0.03 milliseconds (The speed at which pixels can change colors is called response time. It is measured in milliseconds (ms).)
- Panel Type: IPS (Technology that affects response time and image quality.)
- Synchronization Technology: G-SYNC Compatible (NVIDIA Adaptive Sync), FreeSync Premium (AMD Adaptive Sync) (Generally, these technologies allow syncing between a computer/console game's frame rate and the device's refresh rate for a smoother display without tearing.)
- Screen Size: 39 inches (Size of the screen, measured diagonally from corner to corner.)
- OLED Technology: Standard OLED
- Display Connector(s): 1 x DisplayPort, 2 x HDMI 2.1 (The number and type of connectors used to connect to an external display.)
- General
- Brand: LG
- Model Number: 39GX90SA-W
- Product Name: UltraGear 39" OLED Curved WQHD 240Hz 0.03ms G-Sync/FreeSync Premium Smart Gaming Monitor with DisplayHDR 400 TRUE BLACK
- Color: White
- Operating System Compatibility: Not Applicable
- Display
- Refresh Rate: 240Hz (The number of frames per second the device can produce natively without enhancement. Higher rates help produce smooth, seamless pictures.)
- Maximum Resolution: 3440 x 1440 (Maximum resolution refers to the highest number of pixels that a screen can process and display. Higher resolution signals produce more detailed images.)
- Native Resolution: 3440 x 1440 (Native resolution of a screen refers to its single, fixed resolution. Sometimes screens must scale an image up or down in order to fit the native resolution. This can cause a loss of resolution or detail.)
- Contrast Ratio: 1,500,000:1 (Measured difference between a displayed image's brightest whites and darkest blacks. The larger the first number, the more detail and color that can be displayed.)
- Response Time: 0.03 milliseconds (The speed at which pixels can change colors is called response time. It is measured in milliseconds (ms).)
- Display Type: OLED
- Panel Type: IPS (Technology that affects response time and image quality.)
- Synchronization Technology: G-SYNC Compatible (NVIDIA Adaptive Sync), FreeSync Premium (AMD Adaptive Sync) (Generally, these technologies allow syncing between a computer/console game's frame rate and the device's refresh rate for a smoother display without tearing.)
- Aspect Ratio: 21:9 (The measurement of the width of a screen compared to the height of a screen, expressed as a ratio.)
- Curved Screen: true
- Brightness: 275 candela per square meter (A measure of the total light output.)
- Screen Size: 39 inches (Size of the screen, measured diagonally from corner to corner.)
- High Dynamic Range (HDR): true (An HDR-compatible 4K TV or other HDR-compatible product displays HDR video content when it's available from sources like 4K Ultra HD Blu-ray Discs and 4K streaming services.)
- High Dynamic Range Format: VESA Certified DisplayHDR 400 True Black, HDR 10 (There are a few HDR formats that tell the TV or other HDR-compatible product how to best utilize its capabilities to display HDR content. HDR technology can support one or multiple formats, each with various benefits to picture quality.)
- Horizontal Viewing Angle: 178 degrees (The maximum angle at which the display can be viewed with acceptable visual performance from either side.)
- Vertical Viewing Angle: 178 degrees (The maximum angle at which the display can be viewed with acceptable visual performance from above or below.)
- Touch Screen: false (Touch-screen devices make navigating more intuitive. Using a touch-screen display, you can do things such as tap to select, hold and drag to move items, swipe to scroll, and pinch to zoom.)
- On-Screen Display Languages: English (The available language options for displayed text.)
- Color Gamut (NTSC): 98.5 percent
- OLED Technology: Standard OLED
- Connectivity
- Number of DisplayPort Inputs (Total): 1
- Number of HDMI Inputs (Total): 2
- Display Connector(s): 1 x DisplayPort, 2 x HDMI 2.1 (The number and type of connectors used to connect to an external display.)
- Number of USB Ports (Total): 3
- USB Ports: 1 x USB-C, 2 x USB-A 2.0 (The number and type of USB ports the product has.)
- Headphone Jack: true (The device features an interface that allows for the connection of headphones.)
- Compatibility
- Wall Mountable: true (The product is able to be secured to a wall. Some products are designed ready to mount, while others may require additional hardware/accessories for installation.)
- VESA Wall Mount Standard: 100mm x 100mm (VESA wall mount standards refer to the spacing of screw holes built into a TV in order to fit with standard TV wall mounts. These standards are implemented into most TVs and monitors.)
- Features
- Tiltable: true
- Adjustable Stand Height: true
- Anti-Glare: true (Product has features, such as a matte finish, that reduce the likelihood for screen glare.)
- Built-In Webcam: false
- Integrated Speaker(s): true
- Smart Capable: true (Smart, or smart-capable devices are able to connect directly to your home network in order to stream content from the Internet, run Internet-based apps, or connect to other smart devices.)
- Dimensions
- Product Height With Stand: 23.8 inches
- Product Height Without Stand: 15.9 inches
- Product Width: 34.9 inches (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
- Product Depth (With Stand): 12.7 inches
- Product Depth Without Stand: 7.8 inches
- Product Weight: 25.2 pounds (The out of box weight of the item.)
- Stand Included: true
- Certifications Listings & Approvals
- ENERGY STAR Certified: false (Devices carrying the ENERGY STAR service mark, such as computer products and peripherals, kitchen appliances, and other products, generally use 20% to 30% less energy than required by federal standards.)
- EPEAT Qualified: false (The Electronic Product Environmental Assessment Tool (EPEAT) was designed to provide an environmental assessment tool for purchasers. In order to qualify for EPEAT, a product must meet all 23 required criteria.)
- Warranty
- Warranty - Parts: 2 years
- Warranty - Labor: 2 years
- Other
- UPC: 195174115329
Experience lightning-quick speed with up to a 240Hz refresh rate¹ and 0.03ms response time on a huge 39" WQHD curved OLED monitor. The steep 800R curve surrounds you in the action. And with the 240Hz refresh rate, and 0.03ms response time, the action is fast, the play seamless and precise. Dive into UltraGear OLED’s immaculate visuals with up to 98.5% of DCI-P3 color coverage and a 1,500,000:1 contrast ratio for stunning blacks and vibrant colors. LG's game-changing webOS streaming platform adds ease and versatility, letting you enjoy your favorite entertainment streaming platforms as well as cloud gaming services from one, simple to access home screen. Adaptive sync technologies FreeSync Premium Pro and NVIDIA G-SYNC compatibility ensure tear-free, stutter-free performance, whether you're on PC or next-gen consoles. Plus, the UltraGear's 2-year OLED limited warranty and OLED Care features give you peace of mind, keeping your UltraGear monitor in top shape. Designed for gamers, the virtually borderless design complements any gaming setup, with height, tilt, and swivel adjustments for optimal comfort. The RBG backlighting creates the mood that’ll upgrade any battlestation.
- The 240Hz OLED Smart Gaming Monitor that’s Ahead of the (800R) Curve: The 39” WQHD OLED with a steep 800R curve and 1300-nit peak brightness pulls you deep into the action, while a 240Hz refresh rate and 0.03ms response time keep gameplay insanely fast and smooth. Plus, LG’s webOS lets you stream your favorites and cloud game—all from one epic screen.
- Up to 240Hz & 0.03ms – Outrageous OLED Gaming Speed: Game at the speed of OLED with an ultra-fast 240Hz¹ and near instantaneous 0.03ms (GtG) response time. The faster speed lets you respond quickly to opponents and enjoy smoother scenes with less lag or ghosting.
- Your Favorite Streaming Services Plus Cloud Gaming: Thanks to webOS24, find your favorites fast with built-in access to Netflix, Prime Video, the Apple TV app, Disney+, HBO Max. And over 300 free LG Channels with everything from comedy to movies to sports. Game without a PC or console! Connect to your favorite cloud gaming services such as NVIDIA GeForce NOW, Amazon Luna, and Blacknut directly from the webOS home screen.²
- Ultimate Frame Sync: FreeSync Premium Pro & G-SYNC Compatible: Say goodbye to screen tearing and stutter. With AMD FreeSync Premium Pro and NVIDIA G-SYNC compatibility, this OLED monitor delivers ultra-smooth, tear-free visuals, giving you perfect frame sync across PC and next-gen console gaming.
- Bright Picture. Deep Blacks, Brilliant Detail: OLED Gaming FTW: Get lost in vivid visuals with OLED technology, delivering exceptional brightness, up to 98.5% of DCI-P3 color coverage, a 1.5M:1 contrast ratio, and DisplayHDR True Black 400. Every gaming scene pops with deep blacks, brilliant highlights, and cinematic color.
- The 800R Curve: Surround Yourself in the Action: See and feel the action all around you with the dramatic 800R curve. This steep curvature extends your periphery, pulling you deeper into the game and making the action more intense.
- Low Glare, More Focus: Play Without Distractions: UL-verified “Flicker-free Display”, “Discomfort Glare Free” and “Low Blue Light Hardware Solution Platinum”, this OLED display keeps your view crisp and colors bold. With advanced anti-glare tech minimizing reflections, you get distraction-free clarity—so you can stay focused and dominate in any lighting.
- webOS Gaming: AI Tools Customize Your Gaming Experience: Experience enhanced gaming in webOS with AI tools. Dynamic Tone Mapping and AI Picture sharpen visuals, while AI Personalized Picture Wizard customizes settings to your taste. AI Sound completes the package, delivering precision-tuned audio for every game or stream.³
- Unlock Your Potential with Advanced Gaming Features: Dynamic Action Sync reduces input lag for real-time response. Black Stabilizer brightens dark scenes to see what's hidden. FPS Counter shows your real-time frame rate. Crosshair enhances precision for deadly accuracy.
- OLED Protection: 2-Year Limited Warranty & Panel Care Tools: Rest easy knowing your OLED monitor is built to last. The 2-year limited warranty covers key components, including the OLED panel. And OLED Care tools such as pixel cleaning keep your display sharp, for reliable top-tier performance. Please see Warranty Information on this page for all warranty details.
- Serious Connectivity for Serious Gamers: For next gen console gaming or PC gaming, with HDMI 2.1, DisplayPort 1.4 and USB Type-C (65W power delivery), UltraGear's versatile connectivity enables high-resolution graphics, and fast, fluid gaming.⁴
- Customize Your Screen View with the Switch App: The Switch app transforms your screen into a multitasking hub for work, gaming, and streaming. Effortlessly split the screen into up to 6 sections, customize display layouts, or launch video calls with a single hotkey. Navigate smart features with ease and switch seamlessly between your PC and the built-in webOS streaming platform, all with intuitive shortcuts.⁵
- Battlestation Upgrade Adjustable to Gamer Specs: Go big with the virtually borderless 39” OLED screen. UltraGear's sleek, slim design offers adjustable height, tilt, and swivel control for your ideal view, while RGB hexagonal backlighting sets the mood for your battlestation.
Whats Included
- Monitor
- Power Cable
- Remote Control
- Battery (For remote control)
- DisplayPort Cable
- HDMI Cable
- USB Type-C Cable
Product Manuals
Disclaimers
- ¹Actual refresh rates may vary depending on computer graphics specifications and configurations.
- ²Internet connection and subscription to streaming services are required. Amazon, Prime Video and all related logos are trademarks of Amazon.com, Inc. or its affiliates. Amazon Prime membership and/or Prime Video fees apply. See primevideo.com/terms for details. HBO Max 2023 Warner Media, LLC. All Rights Reserved. HBO Max is used under license. Number of LG Channels subject to change.
- ³Internet connection and subscription to streaming services are required.
- ⁴Graphics card that supports DisplayPort 1.4 or HDMI 2.1 are required to achieve up to 240Hz refresh rate support. Graphics card sold separately.
- ⁵Software installation required. Visit Support on LG.com to download.
Q: What is the response time of this monitor?
A: This monitor boasts a 0.03ms (GtG) response time.
Q: Is this monitor wall-mountable?
A: No, this monitor is not wall-mountable.
Q: What is the contrast ratio of this OLED monitor?
A: The monitor has a contrast ratio of 1,500,000:1.
Q: What streaming services are available on this monitor?
A: You can access Netflix, Prime Video, Apple TV, Disney+, HBO Max, and over 300 free LG Channels directly on the monitor.
Q: How is the monitor's connectivity?
A: It offers HDMI 2.1, DisplayPort 1.4, and USB Type-C (with 65W power delivery) for versatile connectivity.
Q: Does this monitor support FreeSync and G-SYNC?
A: Yes, it supports both AMD FreeSync Premium Pro and NVIDIA G-SYNC for a tear-free and stutter-free gaming experience.
Q: Would this monitor be suitable for use as a work display? How well does text display?
A: The LG 39-inch UltraGear™ OLED WQHD 240Hz 0.03ms G-Sync Compatible 800R Curved Gaming Monitor with webOS, Model # 39GX90SA-W, like our UltraGear™ monitors are optimized for gaming, but it is also excellent for both gaming and work. The monitor has a 21:9 Aspect Ratio, which offers significant screen real estate that is ideal for spreadsheets, coding, and creative design, and the improved pixel structures ensure text remains legible for long work sessions...^Ivan.
Q: Can I mount this on a table stand??
A: The LG - UltraGear™ 39" OLED Curved WQHD 240Hz 0.03ms G-Sync/FreeSync Premium Smart Gaming Monitor with DisplayHDR™ 400 TRUE BLACK - White, Model # 39GX90SA-W, is a VESA-compliant display with a 100 x 100 mm VESA Mount Pattern. If your "table stand" (or did you mean a desktop mount?) is a VESA-compliant mount that supports the monitor's VESA mount pattern, you can mount the monitor on it...^Ivan.
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Experience lightning-quick speed with up to a 240Hz refresh rate¹ and 0.03ms response time on a huge 39" WQHD curved OLED monitor. The steep 800R curve surrounds you in the action. And with the 240Hz refresh rate, and 0.03ms response time, the action is fast, the play seamless and precise. Dive into UltraGear OLED’s immaculate visuals with up to 98.5% of DCI-P3 color coverage and a 1,500,000:1 contrast ratio for stunning blacks and vibrant colors. LG's game-changing webOS streaming platform adds ease and versatility, letting you enjoy your favorite entertainment streaming platforms as well as cloud gaming services from one, simple to access home screen. Adaptive sync technologies FreeSync Premium Pro and NVIDIA G-SYNC compatibility ensure tear-free, stutter-free performance, whether you're on PC or next-gen consoles. Plus, the UltraGear's 2-year OLED limited warranty and OLED Care features give you peace of mind, keeping your UltraGear monitor in top shape. Designed for gamers, the virtually borderless design complements any gaming setup, with height, tilt, and swivel adjustments for optimal comfort. The RBG backlighting creates the mood that’ll upgrade any battlestation.
Experience lightning-quick speed with up to a 240Hz refresh rate¹ and 0.03ms response time on a huge 45" WQHD curved OLED monitor. UltraGear Fact: The 45-inch 21:9 45” UltraGear OLED monitor delivers more screen area than a 49-inch 32:9 aspect ratio screen. The sweeping, steep 800R curve surrounds you in the action. And with the 240Hz refresh rate, and 0.03ms response time, the action is fast, the play seamless and precise. Dive into UltraGear OLED’s immaculate visuals with up to 98.5% of DCI-P3 color coverage and a 1,500,000:1 contrast ratio for stunning blacks and vibrant colors. LG's game-changing webOS streaming platform adds ease and versatility, letting you enjoy your favorite entertainment streaming platforms as well as cloud gaming services from one, simple to access home screen. Adaptive sync technologies FreeSync Premium Pro and NVIDIA G-SYNC compatibility ensure tear-free, stutter-free performance, whether you're on PC or next-gen consoles. Plus, the UltraGear's 2-year OLED limited warranty and OLED Care features give you peace of mind, keeping your UltraGear monitor in top shape. Designed for gamers, the virtually borderless design complements any gaming setup, with height, tilt, and pivot adjustments for optimal comfort. The RBG backlighting creates the mood that’ll upgrade any battlestation.
Take command of every battle with a 32" 4K UHD (3840 x 2160) glossy OLED display engineered for gamers who demand more. Experience the ultimate balance of clarity and speed with Dual-Mode refresh rates—crisp 4K UHD at 165Hz for immersive story-driven play, or Full HD at an electrifying 330Hz¹ when every millisecond counts. With an ultra-fast 0.03ms response time, you’ll react instantly, keeping gameplay sharp and responsive. VESA DisplayHDR True Black 400 and up to 98.5% DCI-P3 color coverage reveal stunning contrast, deep blacks, and vivid detail that bring worlds to life. NVIDIA G-SYNC compatablity and AMD FreeSync Premium Pro keeps frames smooth and tear-free. Complete with a tilt, swivel, height, and pivot adjustable stand, this UltraGear OLED monitor adapts to your perfect setup. Built for performance, precision, and comfort—it’s everything you need to stay ahead of the competition.
Unleash unparalleled gaming prowess with the world's first 5K2K WUHD (5120 x 2160) resolution OLED gaming monitor¹. This 45" curved UltraGear monitor elevates your gameplay experience with Dual Mode technology. Dual Mode lets a player switch between breathtaking UHD visuals at up to 165Hz, or Full HD at a blistering 330Hz for ultra-responsive gameplay in FPS, MOBA, or racing titles²—all at the touch of a hotkey. Immerse yourself in up to 1300 nits brightness in UltraGear OLED brilliance, boasting up to 98.5% DCI-P3 color coverage, a staggering 1.5M:1 contrast ratio, and DisplayHDR True Black 400. The dramatic 800R curve and 21:9 aspect ratio offer more vertical screen space than a 49” 32:9 display, pulling you deeper into the action like never before. A sleek, slim design offers adjustable height, tilt, and swivel controls for your perfect view, complemented by RGB backlighting to set the mood for your battlestation. Equipped with DisplayPort 2.1, HDMI 2.1 ports, and USB Type-C with 65W power delivery, plus NVIDIA G-SYNC Compatible and AMD FreeSync Premium Pro support, you’ll enjoy smooth, tear-free gaming at high refresh rates. UltraGear's 2-year limited warranty and OLED Care tools, give you OLED gaming peace of mind as well.
| Pros for LG - UltraGear 39" OLED Curved WQHD 240Hz 0.03ms G-Sync/FreeSync Premium Smart Gaming Monitor with DisplayHDR 400 TRUE BLACK - White | |||
|---|---|---|---|
| Image Quality, Size | Overall Performance, Screen Size, OLED Quality, Refresh Rate, Resolution | OLED Quality, Refresh Rate, Picture Quality, Black Levels, Performance | Overall Performance, Screen Size, OLED Quality, Resolution, Refresh Rate |
| Cons for LG - UltraGear 39" OLED Curved WQHD 240Hz 0.03ms G-Sync/FreeSync Premium Smart Gaming Monitor with DisplayHDR 400 TRUE BLACK - White | |||
| There were no cons for this product— | Text Clarity, Connectivity, Software | Flickering | There were no cons for this product— |
Specs
Reviews
Customers are saying
Customers are impressed with the UltraGear 39" OLED monitor's color quality, noting that the colors are great. There are no cons mentioned for this product.
Customer Images
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
- Rated 4 out of 5 stars
Goldilocks OLED Ultrawide.
Written February 2026 for the 39” 1440p 240hz model, in White colorway for $800 US on a 50% off sale. Why 4 stars and not 5? Well, youve just gotta know what youre getting here and temper your expectations. If you think this is the end all be all perfect monitor, you might have your hopes too high. Theres a reason it was 50% off when I bought it, there are newer panels coming out this year that are pretty insane. However, if you think this might be the perfect large screen OLED ultrawide so as not to have too low of a PPI like the 45”, but larger (and more importantly taller) than a 34” ultrawide, you might be onto something. If youre looking for perfect text clarity as well as high framerate ultrawide oled gaming, you might be disappointed by the text clairty, but not necessarily the gaming performance. This monitor is a great balance between saturating my 5070 GPU at 1440p ultrawide 240hz without leaving either frames or resolution on the table if you opt for the new 5K2K, which im not even sure can be saturated by a 5090. Guess it depends on which games you play. But for me, this 39” monitor strikes a great balance, especially on sale ($800 US in Jan 2026).
Dylan Posted
- Rated 5 out of 5 stars
Silvermist
This screen is amazing I love the quality the easy set up and the way it looks
HollyP Posted
- Rated 5 out of 5 stars
Immersive Experience
Overall a beautiful monitor. One thing that was not really mentioned anywhere is VRR Flicker on OLED Panels (look into it if your thinking of buying OLED and no it’s not specific to this monitor). Other than that, this monitor is amazing.
James Posted
