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LG’s UltraGear evo GX9 (39GX950B-B) is a 39-inch curved OLED gaming monitor with a 5120×2160, 21:9 display. LG called it the world’s first 39-inch 5K2K curved OLED gaming monitor based on published OLED gaming-monitor specifications as of March 2026. Its US preorder has ended; the model was later reported available in several markets, but stock and pricing should be checked with local retailers.
What LG’s “world’s first” claim means
LG announced the UltraGear evo GX9 on April 7, 2026, describing it as the world’s first 39-inch 5K2K curved OLED gaming monitor. The company’s product-page qualification limits the comparison to published OLED gaming-monitor specifications as of March 2026. It is not a claim to have invented OLED, 5K-class displays, or every kind of 5K monitor. LG’s product page and April 2026 launch announcement describe the product and the scope of the claim.
Resolution, refresh rate and panel specifications
The curved 39-inch panel has a native resolution of 5120×2160 pixels, a 21:9 aspect ratio, a 1500R curve and 143 pixels per inch, according to LG. The 5K2K format provides a broad workspace for games and desktop applications, but it also asks the graphics card to render many pixels.
The Tool Desk
Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →| Specification | LG-listed detail |
|---|---|
| Panel | 4th Gen Primary RGB Tandem OLED |
| Resolution and aspect ratio | 5120×2160; 21:9 |
| Curve and density | 1500R; 143 pixels per inch |
| Refresh modes | 165Hz at 5K2K or 330Hz at Wide Full HD (WFHD) |
| Response time | 0.03ms GtG |
| Typical brightness | 335 nits |
| HDR certification | VESA DisplayHDR True Black 500 |
These are manufacturer specifications, not a promise that every PC can run the monitor at its maximum refresh rate. LG says actual refresh performance depends on the computer’s graphics configuration and that supported hardware is required for the maximum rate. The advertised 330Hz mode is WFHD, not the native 5120×2160 resolution. Check the graphics card’s supported output and the connection requirements in LG’s specifications and footnotes before buying.
#1 Best Overall
- The World’s First 39" 5K2K OLED Gaming Monitor - This 39-inch 5K2K (5120×2160) UltraGear hits the sweet spot of size, resolution, and speed. The wide 21:9 format and 1500R curve expand your field of view, while the dense pixel count delivers crisp detail across every scene in the games you love.
- AI Upscaling to 5K2K—No GPU Upgrade Required - UltraGear evo’s built-in processor uses AI Upscaling to enhance content toward the display’s 5K2K resolution. It analyzes the source signal to improve detail and clarity—helping games and video look sharper without requiring a GPU upgrade.
- Next-Gen Brilliance with 4th Gen RGB Tandem OLED - 4th Gen Primary RGB Tandem OLED delivers up to 335 nits typical brightness with improved power efficiency. Its advanced 4-stack RGB structure enhances contrast, sharpens detail, and keeps color precise across every frame.
- UL-Verified for a "Perfect" Visual Experience - Perfect Black: UL-verified Perfect Black delivers true black levels to enhance perceived brightness and contrast, whether it's bright or dark around you. Perfect Color and 100% Color Fidelity- UL verified to deliver accurate color expression even under varying lighting conditions, from low light to bright ambient environments. UL-verified Perfect Reproduction ensures game content is faithfully rendered on screen, preserving intended color and detail. This certification reflects real-world content accuracy.
- Deeper Detail with VESA DisplayHDR True Black 500 - VESA DisplayHDR True Black 500 reveals rich blacks and nuanced shadow detail—even in dark scenes. Combined with a 1.85M:1 contrast ratio, up to 99.5% (typical) DCI-P3 color, and Delta E≤2 accuracy, visuals appear vivid, precise, and true to the creator’s intent.
What the resolution means for gaming
At 5120×2160, the monitor has 33% more pixels than standard 4K, according to TechRadar’s September 28, 2026 review. That can make games more demanding to run smoothly than on a 4K display. TechRadar notes that upscaling may be important for smooth gameplay; the result will depend on the game, settings and graphics hardware, so no universal frame rate can be inferred from the monitor’s refresh specification.
LG lists DisplayPort 2.1 (UHBR20), HDMI 2.1 and a USB-C port with up to 90W power delivery. USB-C power delivery can help connect and charge a compatible laptop, but the port’s presence alone does not establish that a particular computer can drive the panel at its highest resolution and refresh rate. Confirm the required mode and cable support for the device you plan to use.
Rank #2
- World's First 5K2K OLED Gaming Monitor - Gaming like never before with the world's first 5K2K WUHD (5120 x 2160) resolution on a massive 45” curved OLED screen. This unparalleled clarity on an ultra-wide aspect ratio pulls you deep into the action, surrounding you with stunning visuals and astounding detail. Perfect for epic battles or cinematic adventures, this UltraGear is your window to ultimate gaming perfection.
- 125 PPI: Sharp Text Clarity with Reduced Color Fringe - Designed with an updated subpixel layout, the 5K2K UltraGear OLED screen reduces color fringing for sharper, clearer text. 125 pixels per inch (PPI) is perfect for both work and play: crisp text clarity paired with bold, vivid visuals.
- Bright 45" OLED Picture: Up to 1300 nits with Deep Blacks and Brilliant Color - Experience bright OLED visuals at up to 1300 nits peak brightness. With color 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.
- Dual Mode: 5K2K 165Hz or WFHD at 330Hz - Dual Mode lets you take control of your gaming experience. Enjoy graphically stunning story-driven adventures in 5K/WUHD at up to 165Hz, immersing yourself in epic visuals and rich detail. Or press the hotkey to switch to Wide Full HD at an electrifying 330Hz for ultra-responsive gameplay in FPS, MOBA, or racing titles.
- 0.03ms (GtG): Astounding OLED Speed - Play with a near-instantaneous 0.03ms response time, which minimizes ghosting for gaming visuals that are sharp, clear and buttery smooth.
Price and availability by region
The preorder wording in the original announcement is now historical. LG’s prices below are dated launch figures rather than verified current retail quotes.
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| Market | Reported launch information |
|---|---|
| United States | LG announced a $1,799.99 preorder price on April 7, 2026. Its launch promotion offered preorder customers a two-year LG Premium Care warranty extension for $1 from April 6 through May 3, 2026; that promotion has expired. |
| Canada | LG Electronics Canada announced a C$2,199.99 starting MSRP on May 1, 2026, with select-retailer availability expected in early May. |
| United States, United Kingdom and Australia | TechRadar reported the monitor available in these markets in its September 28, 2026 review. The review listed the US starting price as $1,799.99. |
For the original US preorder terms, see LG’s April 7 announcement. The Canadian launch information is in LG Canada’s May 1 announcement. Retail listings can change, so check the seller in your country for live stock, price and warranty terms.
Rank #3
- The 240Hz OLED Gaming Monitor That’s Ahead of the (800R) Curve — 39" WQHD OLED with a steep 800R curve and up to 1300-nit (APL 1.5%) peak brightness pulls you into the action; 240Hz and 0.03ms (GtG) keep gameplay fast and fluid.
- Up to 240Hz & 0.03ms – Outrageous OLED Gaming Speed — Respond faster and track targets with near-instant pixel transitions that cut lag and ghosting for competitive play.
- Ultimate Frame Sync: FreeSync Premium Pro & G-SYNC Compatible — Tear-free, stutter-free visuals across PC and next-gen consoles for consistently smooth frames.
- Bright Picture, Deep Blacks, Brilliant Detail — OLED delivers up to 98.5% DCI-P3, 1.5M:1 contrast, and DisplayHDR True Black 400 for cinematic color and shadow detail.
- The 800R Curve: Surround Yourself in the Action — A dramatic 800R wrap enhances peripheral vision for deeper immersion in every scene.
How it compares with the Alienware AW3926QW
TechRadar’s September 2026 review discusses the Alienware AW3926QW as an alternative. The review characterizes the LG’s finish as matte and anti-glare and the Alienware’s as glossy, and notes differences in HDR support and connections. Those distinctions may matter more than a small price difference if you have a strong preference about reflections, HDR features or the ports needed for your setup. The review’s comparison and prices reflect its publication date, not live market conditions; check TechRadar’s review and current listings for the details that matter to you.
Quick Recap
Best Value
- 39” OLED Display with 21:9 Aspect Ratio - With a large 39” display, 21:9 aspect ratio and a dramatic curved OLED screen, you’ll feel like you’re actually in the game. Experience next-level gaming performance with LG UltraGear OLED.
- 800R Curved Screen - This UltraGear OLED monitor's dramatic and steep 800R curve draws you in with game play by extending the periphery to feel like you're surround by the action.
- 240Hz Refresh Rate - Gear up for smooth gameplay with an ultra-fast 240Hz OLED display. The faster speed lets you respond quickly to opponents and stay a step ahead of the competition.
- 0.03ms Response Time - Enjoy smoother scenes with less lag or ghosting thanks to LG UltraGear OLED's nearly instantaneous 0.03ms (GtG) response time.
- Display HDR True Black 400 & 1.5M:1 Contrast Ratio - DisplayHDR True Black 400 displays rich blacks and vivid color. The benefit of the 1.5M:1 Contrast Ratio for gaming and streaming content, is impeccable image detail in dark scenes for a stunning visual experience.
Rank #4
- The World’s First 5K2K Monitor with Thunderbolt 5 - The LG UltraFine evo 40U990A is the world’s first 5K2K widescreen monitor with Thunderbolt 5, delivering ultra-fast data transfer, 96W charging, and dual display support. The monitor's 40” curved (2500R), Nano IPS Black panel offers brilliant color, and spectacular contrast - a new go-to display for creators, multitaskers and gamers.
- Sharper 5K2K Details on a Wide Creative Canvas - The 5K2K (5120x2160) Nano IPS Black display offers ultra-wide resolution, vivid color, and razor-sharp detail—providing a spacious, precise workspace ideal for video editing, graphic design, photography, and color-critical creative tasks.
- Built for Creators. Ready for Professionals. - Built for creative flow, the UltraFine evo 5K2K screen makes it easy to work across complex timelines, layered interfaces, and multiple windows—ideal for editing, producing, and programming.
- VESA DisplayHDR 600 Meets Nano IPS Black Brilliance - VESA DisplayHDR 600 and Nano IPS Black combine to deliver deep blacks, vivid highlights, and cinematic color—ideal for creators who need precision in light, shadow, and texture.
- Up to 99% DCI-P3 Color Brilliance for Visual Pros - With up to 99% DCI-P3 color gamut, this UltraFine evo display delivers bold, vibrant color across a wide spectrum—ideal for impactful video, photo, and design work in print, digital, and broadcast formats.
Who should consider the GX9?
- Consider it if you want a large, curved ultrawide OLED panel with a high native resolution and a choice between 5K2K at 165Hz and WFHD at 330Hz.
- Check your PC first if you expect to play demanding games at the native resolution and high frame rates. The pixel load may require reduced settings or upscaling, and the maximum refresh modes depend on compatible graphics hardware.
- Compare alternatives if you care about a glossy rather than matte finish, or need particular HDR features or connections; TechRadar identifies the Alienware AW3926QW as a relevant model to examine.
- Verify the deal locally because the US and Canadian figures above are dated launch prices, and the preorder promotion is over.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
