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The LG UltraGear 45GX950A-B is a 45-inch curved OLED gaming monitor with two distinct ways to play: native 5120 × 2160 at up to 165 Hz, or 2560 × 1080 at up to 330 Hz. That combination makes it compelling if you want a huge, immersive screen for detailed games and general use, but also want a faster, lower-resolution option for competitive play. Its fixed 800R curve and large footprint are not for every desk, and independent reviews differ on how impressive its HDR looks.
What the LG 45GX950A-B offers
LG markets the 45GX950A-B as a 45-inch, 21:9 5K2K WUHD OLED gaming monitor. Its native resolution is 5120 × 2160, and LG cites a pixel density of 125 pixels per inch. The screen has a fixed 800R curve; it is not the bendable 45GX990A. LG’s CES 2025 announcement describes an RGWB subpixel layout. LG’s product specifications list a manufacturer-claimed 0.03 ms pixel response time. Treat that as a specification claim, not an independent measurement.
The defining feature is Dual Mode: the monitor can run at native 5K2K resolution up to 165 Hz, or switch to 2560 × 1080 up to 330 Hz. The faster mode is a substantial resolution reduction, not 330 Hz at native 5K2K. LG advertises eight Dual-Mode configurations; the available combinations depend on the selected mode and source device.
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5K2K at up to 165 Hz
At 5120 × 2160, the panel provides a tall, detailed ultrawide canvas suited to cinematic games, expansive environments, and general desktop use. The higher resolution also asks more of the graphics system than a lower-resolution gaming mode. The available review evidence does not establish expected frame rates for specific graphics cards, so check the requirements of the games and GPU you plan to use rather than assuming the monitor itself guarantees a given performance level.
#1 Best Overall
- 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.
2560 × 1080 at up to 330 Hz
Switching to 2560 × 1080 prioritizes refresh rate over detail. That can make sense for fast competitive play if your system can produce a high frame rate and you value the 330 Hz ceiling more than native sharpness. The image is not rendered at 5K2K in this mode, so buyers should consider whether the lower resolution looks acceptable across a 45-inch panel.
RTINGS describes the monitor as very responsive, with sharp motion handling and variable refresh rate support. Those are review findings for its tested unit, not a promise of a particular frame rate in every game or configuration. Its review applies to a unit manufactured in February 2025 and was updated October 7, 2026; it lists firmware versions 3.01, 4.23.16, and 2.04. See RTINGS’ test notes and findings.
Rank #2
- 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.
Image quality, HDR, and everyday use
Independent reviewers praise the screen’s immersion, image quality, and smooth gaming. PCWorld highlights its 5K2K sharpness and describes HDR performance positively, while Tom’s Guide flags limited HDR brightness. Those assessments are not identical, and the available reviews do not establish one universal HDR result across content and conditions. If HDR impact is a priority, read both reviews and weigh their observations rather than treating the feature label alone as a guarantee.
Tom’s Guide also says the monitor can serve productivity use, but a 45-inch curved display occupies substantial space. The 800R curve is pronounced, which may be immersive for games but could feel imposing for desktop tasks or users who prefer a flatter screen. Measure desk width and depth, viewing distance, and any space needed for the stand before buying.
Rank #3
- 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.
Text and pixel density deserve special attention if the monitor will be used for long work sessions. The 125 PPI figure is LG’s stated specification; RTINGS says the smaller LG 39GX950B-B has higher pixel density and that Dell’s U4025QW offers sharper text. Those alternatives may suit text-heavy work better.
Ports and setup considerations
LG lists DisplayPort 2.1, HDMI 2.1, and USB-C with up to 90 W power delivery. PCWorld’s port listing specifies two HDMI 2.1 inputs, one DisplayPort 2.1 input, USB-C, a 3.5 mm headphone jack, and built-in speakers. Confirm the capabilities of your computer or console and the connection you plan to use before expecting a particular resolution-and-refresh combination. Display output, cable, and source support can affect which modes are available.
Rank #4
- Dual Mode: 4K UHD 240Hz or Full HD 480Hz - LG UltraGear OLED is a VESA Certified Dual Mode gaming monitor. This innovation allows gamers to experience graphically rich, story-driven games in 4K/UHD at up to 240Hz or switch to Full HD at up to 480Hz for fast-paced FPS, MOBA or racing games via hotkey.
- Leave Lag Behind with 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.
- NVIDIA G-SYNC Compatible and AMD FreeSync Premium Pro - Officially validated by NVIDIA as G-SYNC Compatible and equipped with AMD FreeSync Premium Pro means this UltraGear provides smooth, fast action that reduces screen tearing and stutter. Never miss a frame of the action as you clinch your victories.
- Bright OLED Gaming - This UltraGear features Micro Lens Array+ technology. So with a typical brightness of 275 nits and a peak brightness of up to 1300 nits, this monitor is UltraGear's brightest OLED gaming display.
- VESA DisplayHDR True Black 400 & 1.5M:1 Contrast Ratio - VESA DisplayHDR True Black 400 certified means this monitor meets industry standards for brightness as well as deep, rich black color expression. With a 1.5M:1 contrast ration, the benefit for gaming impeccable color and image detail in dark scenes for a stunning visual experience.
How it compares with alternatives
| Monitor | Format and resolution | What may suit it better | Trade-off versus the LG 45GX950A-B |
|---|---|---|---|
| LG 45GX950A-B | 45-inch 21:9 OLED; 5120 × 2160 at up to 165 Hz, or 2560 × 1080 at up to 330 Hz | A very large screen, native 5K2K detail, and a lower-resolution high-refresh option | Large footprint and a pronounced fixed curve; 330 Hz requires lower resolution |
| LG 39GX950B-B | 39-inch 5K2K; refresh details not stated in the cited comparison | RTINGS says it has higher pixel density, a newer and brighter panel, and better color purity | Smaller display than the 45-inch model; refresh comparison not stated in the cited source. RTINGS comparison context |
| Dell U4025QW | 40-inch class; resolution and refresh details not stated in the cited comparison | RTINGS describes it as more work-focused, with sharper text, a larger USB hub, and Thunderbolt 4 | Less focused on the 45GX950A-B’s large OLED gaming and Dual Mode proposition. RTINGS comparison context |
| Samsung OLED G9 | 49-inch 32:9 QD-OLED; 5120 × 1440 at 240 Hz | Wider 32:9 workspace and, according to RTINGS, more vivid colors from its QD-OLED panel | Its 1440-pixel vertical resolution is shorter than the LG’s 2160-pixel native format. RTINGS comparison context |
These are different screen formats and use cases, not simple substitutes. Compare text clarity, physical size, native resolution, refresh behavior, HDR expectations, and work connectivity against what you actually do at the desk. Current prices, stock, and competing model revisions vary by region and date, so check live local listings rather than relying on launch-era figures.
Price and buying decision
PCWorld reported a $1,999.99 MSRP in its April 10, 2025 review; that is launch-era context, not a current price. Check a current retailer listing for your region before deciding whether the premium is worthwhile. Read PCWorld’s review.
Best Value
- 32" 4K UHD Glossy OLED Display - Experience ultra-sharp visuals and lifelike color on a stunning 32-inch 4K UHD (3840 x 2160) glossy OLED display. Every detail pops with depth and vibrancy, bringing your favorite games and content to life.
- Bright OLED Gaming - This UltraGear features Micro Lens Array+ technology. So with a typical brightness of 275 nits, this monitor is brighter than previous UltraGear OLED gaming displays and has improved viewing angles.
- VESA DisplayHDR True Black 400 & 1.5M:1 Contrast Ratio - VESA DisplayHDR True Black 400 certified with upt to DCI-P3 98.5% color gamut means this monitor meets industry standards for brightness as well as deep, rich black color expression. With a 1.5M:1 contrast ration, the benefit for gaming impeccable color and image detail in dark scenes for a stunning visual experience.
- 32" UHD OLED Brilliance with 165Hz of Game-Changing Speed - Experience ultra-smooth, tear-free gameplay with up to 165Hz on a bright 32” Glossy UHD OLED display. React instantly, spot every detail, and outpace your opponents in every frame with outrageous speed and clarity.
- Leave Lag Behind with 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.
The LG 45GX950A-B is easiest to recommend when you specifically want its scale and expect to use both sides of Dual Mode: detailed 5K2K gaming and a much faster 2560 × 1080 setting. If you mainly want a work monitor, sharper text, a smaller footprint, or stronger HDR brightness, compare alternatives before committing. Tom’s Guide’s hands-on review likewise notes the large desk requirement, cost, and HDR brightness caveat. Read Tom’s Guide’s review.
Quick Recap
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.
