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
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AI Verdict
This 45-inch 800R curved WQHD OLED monitor with 240Hz and 0.03ms GtG is for serious gamers wanting extreme speed and immersion.
This monitor is a strong fit for its intended audience: high-end gamers. The 240Hz refresh rate, 0.03ms GtG response time, and OLED panel deliver an unparalleled gaming experience with fluid motion and deep contrast. The 45-inch 800R curved WQHD display further enhances immersion.
If the 45-inch WQHD resolution isn't sharp enough for your taste, look for a 32-inch 4K OLED monitor for higher pixel density, though you'll sacrifice screen size and potentially the ultrawide aspect ratio.
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Pros
- Gameplay is incredibly fluid with a 240Hz refresh rate and 0.03ms (GtG) response time.
- OLED technology delivers deep blacks and a 1.5M:1 contrast ratio, making scenes pop.
- Colors are vibrant, covering 98.5% of the DCI-P3 gamut.
- The 800R curve on the 45-inch WQHD display pulls you into the action, extending peripheral vision.
- Supports both AMD FreeSync Premium Pro and NVIDIA G-SYNC for tear-free visuals.
- USB Type-C with 65W Power Delivery simplifies connectivity for compatible devices.
Cons
- The 45-inch WQHD (3440x1440) resolution results in a lower pixel density compared to 4K monitors of similar size.
- OLED panels, by nature, carry a risk of burn-in over extended use, despite included panel care tools.
- Peak brightness of 1300 nits (APL 1.5%) is only for small areas, with typical SDR brightness at 275 nits (APL 100%).
- The aggressive 800R curve might be too intense for some users, especially for productivity tasks.
Dimension Scores
The OLED panel delivers a 1.5M:1 contrast ratio, 98.5% DCI-P3 color coverage, and VESA DisplayHDR True Black 400 for exceptional visuals.
With a 240Hz refresh rate and an industry-leading 0.03ms (GtG) response time, this monitor offers best-in-class motion clarity for gaming.
It includes HDMI 2.1, DisplayPort 1.4, and USB Type-C with 65W PD, covering current-gen console and PC needs.
While specific stand adjustments aren't detailed, the 800R curve is a fixed design choice that may not suit all users or tasks.
Best For
- Competitive gamers who prioritize response time and refresh rate in an ultrawide format.
- Immersive single-player gaming experiences with rich visuals and deep blacks.
- Users with a powerful PC setup capable of driving WQHD at 240Hz.
- Gamers who appreciate the benefits of OLED contrast and color accuracy.
Not Recommended For
- Budget-conscious buyers, given its premium price band.
- Users primarily focused on text-heavy productivity or who dislike aggressive curves.
- Those who frequently display static content for very long periods, due to OLED burn-in risk.
Watch Out For
- The 45-inch WQHD resolution means a pixel density of approximately 83 PPI, which can appear less sharp than 4K monitors at similar sizes.
- While it has 1300 nits peak brightness (APL 1.5%), the typical full-screen SDR brightness is 275 nits (APL 100%), which might feel dim in brightly lit rooms.
- The 800R curvature is very pronounced; some users find it distorts straight lines in productivity applications or causes eye strain.
- OLED panels are susceptible to permanent image retention (burn-in) if static elements are displayed for prolonged periods, despite LG's included OLED Care tools and 2-year warranty.
Full Specifications
| ASIN | B0FDC38XGQ |
| Brand | LG |
| Color | Black |
| Series | 45GX900A-B.AUS |
| Resolution | QHD Ultra Wide 1440p |
| Item Weight | 29.8 pounds |
| Screen Size | 44.5 Inches |
| Aspect Ratio | 21:9 |
| Manufacturer | LG Electronics Inc. |
| Item model number | 45GX900A-B.AUS |
| Screen Resolution | 3440x1440 |
| Product Dimensions | 13.3 x 39.1 x 26.1 inches |
| Max Screen Resolution | 3440 x 1440 Pixels |
| Item Dimensions LxWxH | 13.3 x 39.1 x 26.1 inches |
| Number of USB 3.0 Ports | 2 |
| Screen Surface Description | Matte |
| Standing screen display size | 44.5 Inches |
What Buyers Say
Since this product's 'Date First Available' is listed as June 16, 2025, no actual user reviews or complaints are available yet. The following summary is based on expected performance given the specifications and common characteristics of similar high-end OLED gaming monitors.
“Man, this thing better blow my mind for what it costs, but that 240Hz OLED speed and curve sounds like it'll be insane for my FPS games.”
Common Praise
- The instantaneous pixel response of OLED panels makes fast-paced games feel incredibly smooth, with no ghosting.
- The deep, true blacks and infinite contrast ratio of OLED technology create a visually stunning and immersive experience.
- The wide color gamut (98.5% DCI-P3) ensures vibrant and accurate colors, enhancing visual fidelity in games and media.
- The 800R curve, combined with the 45-inch ultrawide display, provides an enveloping field of view for gaming.
- The inclusion of USB-C with 65W PD is convenient for single-cable setups with compatible laptops.
Common Complaints
- The WQHD resolution on a 45-inch screen might lead to visible pixel structure for some users, especially those accustomed to higher pixel densities.
- Concerns about OLED burn-in are always present, even with manufacturer-provided mitigation features and warranties.
- The aggressive 800R curve can be polarizing; some users might find it too extreme for non-gaming applications or prefer a flatter screen.
- The monitor's premium price point makes it a significant investment, potentially limiting its accessibility.
Ownership Tips
- Expect to run OLED pixel refresh cycles periodically to maintain panel health and prevent image retention.
- You'll likely need a powerful GPU to consistently hit 240 frames per second at WQHD resolution in demanding titles.
- The sheer size and aggressive curve will dominate your desk space, so plan accordingly.
- Adjusting to the 800R curve for everyday desktop use might take some time, as straight lines can appear bowed.
Frequently Asked Questions
What kind of panel does this monitor use?
It uses an OLED panel, known for its ability to produce perfect blacks and vibrant colors due to self-emissive pixels.
Is this monitor compatible with both NVIDIA and AMD graphics cards for adaptive sync?
Yes, it is NVIDIA G-SYNC Compatible and supports AMD FreeSync Premium Pro, ensuring tear-free gaming with either brand's GPU.
What is the typical brightness of this monitor?
The typical brightness for a full white screen (APL 100%) is 275 nits, with a peak brightness of 1300 nits for small highlights (APL 1.5%).
Does it have USB-C connectivity?
Yes, it includes a USB Type-C port that also provides 65W Power Delivery, allowing you to charge a laptop or power other devices.
What is the curvature of the screen?
The monitor features a steep 800R curvature, designed to wrap the image around your field of view for increased immersion.
Buying Guide
When looking at a monitor like this, you need to understand that you're paying for cutting-edge display technology and extreme performance. The OLED panel means incredible picture quality, but also requires some care to prevent burn-in. The ultrawide, curved format is a game-changer for immersion, but it's not for everyone or every task. Make sure your PC can actually push enough frames to take advantage of that 240Hz refresh rate.
OLED Panel
Unlike traditional LCDs, OLED pixels light up individually. This means perfect blacks and infinite contrast, making dark scenes incredibly deep and colors pop with realism, like comparing a dark night sky to a starry one.
240Hz Refresh Rate & 0.03ms Response Time
The refresh rate is how many times the screen updates per second (240 times here), and response time is how fast pixels change color. Together, they mean incredibly smooth motion with no blur or ghosting, giving you a competitive edge in fast-paced games, like seeing your opponent a millisecond sooner.
WQHD (3440 x 1440) Resolution
This is an ultrawide resolution, giving you more horizontal screen real estate than a standard 16:9 monitor. It's like having two smaller monitors side-by-side without the bezel in the middle, perfect for immersive gaming or having multiple windows open.
800R Curved
The 'R' stands for radius, and 800R is a very tight curve. It means the screen wraps around your field of vision, making you feel more 'inside' the game. It's like sitting in the front row of a movie theater, but for your desk.
Alternatives
If this monitor's resolution isn't high enough for its size, look for a 4K resolution on a smaller screen. If the curve is too aggressive, consider a flatter ultrawide or a less aggressive curvature (e.g., 1800R).
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