LG
LG 45GX900A-B 45-Inch Ultragear WQHD (3440 x 1440) OLED Curved Gaming Monitor
Bottom line: The LG 45GX900A-B 45-Inch Ultragear WQHD OLED Curved Gaming Monitor ($1207.45): 240Hz refresh and 0.03ms GtG response for fast, low-ghosting play; main trade-off: 3440x1440 stretched across 45 inches means lower pixel density than 4K.
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*Price sourced from Amazon.com. Last updated 2026-09-29. Price and availability subject to change.
Pros & Cons
Pros
- ✓ 240Hz refresh and 0.03ms GtG response for fast, low-ghosting play
- ✓ 45-inch 21:9 panel offers more screen area than a 49-inch 32:9 display
- ✓ Up to 1300 nits peak (1.5% APL), 1.5M:1 contrast, 98.5% DCI-P3 coverage
- ✓ HDMI 2.1, DisplayPort 1.4 and USB-C with 65W power delivery
- ✓ 2-year limited warranty explicitly covers the OLED panel
Cons
- ✗ 3440x1440 stretched across 45 inches means lower pixel density than 4K
- ✗ Steep 800R curve can bend straight lines in spreadsheets and CAD work
- ✗ 1300-nit peak applies only to a 1.5% window; HDR cert is True Black 400
- ✗ PC input tops out at DisplayPort 1.4, not DisplayPort 2.1
Manufacturer description
Experience lightning-quick speed with up to a 240Hz refresh rate¹ and 0.03ms response time on a massive 45" WQHD curved OLED monitor.UltraGear Fact: The 45-inch 21:9 45 Inch 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…
SpecPicks Verdict
SpecPicks scored LG 45GX900A-B 45-Inch Ultragear WQHD (3440 x 1440) OLED Curved… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the gaming monitors category. LG's gaming monitors lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for gaming monitors of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- The 240Hz OLED gaming monitor that’s Ahead of the (800R) Curve -The huge 45” WQHD OLED with a steep 800R curve and up to 1300 nits (APL 1.5%) peak brightness pulls you deep into the action, while a 240Hz refresh rate and 0.03ms response time keep gameplay insanely fast and smooth.
- Up to 240Hz & 0.03ms – Outrageous OLED Gaming Speed - Game at the speed of OLED with an ultra-fast 240Hz 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.
- 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.
- Size Matters in OLED Gaming - The 21:9 45” UltraGear OLED delivers the ultimate ultra-wide screen space for gaming, offering more screen area than a 49” 32:9 screen. Get ready for a bigger, more immersive gaming experience that pulls you deeper into the action.
- 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.
Full Specifications
| Brand | LG |
|---|---|
| Resolution | QHD Ultra Wide 1440p |
| Screen Size | 44.5 Inches |
| Aspect Ratio | 21:9 |
| 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. |
| 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. |
| 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. |
| 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. |
| Screen Surface Description | Matte |
| Size Matters in OLED Gaming - The 21 | 9 45” UltraGear OLED delivers the ultimate ultra-wide screen space for gaming, offering more screen area than a 49” 32:9 screen. Get ready for a bigger, more immersive gaming experience that pulls you deeper into the action. |
| Full listing title | LG 45GX900A-B 45-Inch Ultragear WQHD (3440 x 1440) OLED Curved Gaming Monitor, 240Hz, 0.03ms, NVIDIA G-Sync, VESA DisplayHDR True Black 400, HDMI 2.1, DisplayPort, USB Type-C PD 65W, Black |
Ready to buy?
LG 45GX900A-B 45-Inch Ultragear WQHD (3440 x 1440) OLED Curved Gaming Monitor, 240Hz, 0.03ms, NVIDIA G-Sync, VESA DisplayHDR True Black 400, HDMI 2.1, DisplayPort, USB Type-C PD 65W, Black is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-09-29. Price and availability subject to change.
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