The LG 45GX950A-B is a premium ultrawide gaming monitor. It's the first 45-inch WOLED display with a 5120x2160 resolution, also known as 5k2k, resulting in a pixel density of 125 PPI. Featuring an 800R curved screen, it sits alongside the LG 45GX990A-B, which has a bendable screen, and it's higher-end than the LG 45GX90SA-B and older monitors, like the LG 45GR95QE-B, which have a lower resolution. It has a native 165Hz refresh rate, and one of its main advantages is the Dual-Mode feature that lets you switch the aspect ratio, resolution, and refresh rate, most notably to a 2560x1080 resolution with a 330Hz refresh rate. It has other perks, like VRR support, HDMI, and DisplayPort 2.1 bandwidth to take advantage of modern PCs and consoles, and it also has DisplayPort Alt Mode over USB-C port. Plus, LG advertises that in the United States, it comes with a two-year warranty, including the OLED panel, but this can vary between regions.
Our Verdict
The LG 45GX950A is fantastic for PC gaming. It has a Dual-Mode feature that allows you to choose between a 5120x2160 resolution with a 165Hz refresh rate or a 2560x1080 resolution with a 330Hz refresh rate, so it's versatile for different types of games you may play. It even has high-bandwidth HDMI and DisplayPort inputs and supports any common VRR format. Gaming feels responsive, thanks to its low input lag in any mode, and it has incredibly sharp motion handling. It also delivers excellent picture quality with deep and inky blacks in dark rooms, no blooming around bright objects, and highlights that pop. However, while it displays a wide range of colors in HDR, it struggles to properly display bright colors.
Dual-Mode feature between 165Hz and 330Hz refresh rates.
Near-infinite contrast ratio in dark rooms.
Small highlights pop in HDR.
Incredibly sharp motion.
Large screen with high native resolution.
Bright colors aren't the most vivid.
Noticeable VRR flicker with changing frame rates.
The LG 45GX950A is incredible for console gaming. It has a high 5120x2160 resolution for sharp and detailed images, but because gaming consoles don't support ultrawide gaming, you'll see black bars on the sides. It still provides a fantastic gaming performance with low input lag and a near-instantaneous response time, resulting in sharp motion. Its picture quality is also excellent, as blacks are deep and inky in dark rooms without any blooming, and highlights pop against the rest of the image in HDR. However, it doesn't get as bright in SDR, so it struggles to fight glare in a well-lit room.
Near-infinite contrast ratio in dark rooms.
Small highlights pop in HDR.
Incredibly sharp motion.
Large screen with high native resolution.
Supports almost any signal from a PS5 or Xbox Series X|S.
Bright colors aren't the most vivid.
Consoles don't support ultrawide signals.
The LG 45GX950A is good for office use, with certain limitations. Its 45-inch screen provides a ton of screen space to work with, and it has a high resolution for sharp text clarity. However, there are some fringing issues around text, and text looks a lot less sharp if you use its Dual-Mode feature, which lowers the resolution. The monitor also has great reflection handling, and it's easy to see the screen if you have some lights around, but it doesn't get bright enough to fight a ton of glare in SDR. There are some downsides to using it, though, as its aggressive curve may take some time getting used to, and it risks burn-in with constant exposure to the same static elements over time.
Large screen with high native resolution.
Sharp text clarity with Dual-Mode off.
USB-C port with 90W of power delivery.
Great reflection handling.
Doesn't fight glare in SDR.
800R curve may take time getting used to.
Risk of burn-in.
The LG 45GX950A is amazing for content creation. It delivers excellent picture quality thanks to its near-infinite contrast ratio in dark rooms, resulting in deep blacks, and there isn't any blooming around bright objects either. It also displays a wide range of colors in HDR and makes small highlights pop, but it struggles to properly display bright colors. It even comes with a dedicated sRGB mode that has fantastic accuracy before any sort of calibration. There are some downsides, though, as it doesn't get bright enough in SDR to fight a ton of glare. While it has a big enough screen for multitasking, you may need some time to get used to its aggressively curved display. Unfortunately, it also risks burn-in with constant exposure to the same static elements over time.
Near-infinite contrast ratio in dark rooms.
Small highlights pop in HDR.
Large screen with high native resolution.
sRGB mode with accurate colors before calibration.
Doesn't fight glare in SDR.
Bright colors aren't the most vivid.
800R curve may take time getting used to.
Risk of burn-in.
The LG 45GX950A has decent brightness. It gets brightest in HDR as it fights glare and makes small highlights pop, but it's dimmer in SDR.
Small highlights pop in HDR.
Doesn't fight glare in SDR.
The LG 45GX950A has a near-instantaneous response time for incredibly sharp motion.
Incredibly sharp motion.
The LG 45GX950A has excellent HDR picture quality. It displays deep, inky blacks in dark rooms without any blooming. It also displays a wide range of colors, but it struggles with properly displaying bright colors.
Near-infinite contrast ratio in dark rooms.
Displays a wide range of colors.
Bright colors aren't the most vivid.
The LG 45GX950A has outstanding SDR picture quality. It has a near-infinite contrast ratio in dark rooms, resulting in deep blacks, and it displays a wide range of colors.
Near-infinite contrast ratio in dark rooms.
Displays a wide range of colors.
The LG 45GX950A has fantastic color accuracy. It has a dedicated sRGB mode that's accurate before any sort of calibration, but calibrating the monitor improves the accuracy even further.
sRGB mode with accurate colors before calibration.
Some pre-calibration gamma issues.
Performance Usages
Changelog
- Updated Mar 17, 2026: We've converted this review to Test Bench 2.1.2. We added a new Panel Technology box, including the Spectral Power Distribution (SPD) graph.
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Updated Mar 13, 2026:
We updated the firmware, which improves HDR brightness and color volume.
- Updated Nov 10, 2025: We've converted this review to Test Bench 2.1.1. We removed the Vertical Viewing Angle test.
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Updated Oct 27, 2025:
We updated the Max Refresh Rate over HDMI and DP to reflect the max refresh rate at its native resolution, for consistency with other reviews.
Check Price
Differences Between Sizes And Variants
We bought and tested the 45-inch LG 45GX950A-B, and the results are valid for this model only. It comes with a fixed 800R curve, but there's also the similar LG 45GX990A-B, which has a bendable screen. There are other ultrawide OLEDs in LG's UltraGear lineup, and you can see the differences between them below.
| Model | Size | Refresh Rate | Resolution | Curve | Smart OS |
|---|---|---|---|---|---|
| 45GX950A-B | 45" |
165Hz (native) 330Hz (Dual-Mode) |
5120x2160 (native) 2560x1080 (Dual-Mode) |
800R | No |
| 45GX990A-B | 45" | 165Hz (native) 330Hz (Dual-Mode) |
5120x2160 (native) 2560x1080 (Dual-Mode) |
0-900R | No |
| 45GX90SA-B | 45" | 240Hz | 2560x1440 | 800R | Yes |
Our unit's label indicates it was manufactured in February 2025. We tested it with firmware (3.01, 4.23.16, 2.04).
Popular Monitor Comparisons
The LG 45GX950A-B is a 45-inch ultrawide OLED gaming monitor. With a Dual-Mode feature that switches it between a 5120x2160 resolution and 165Hz refresh rate or a 2560x1080 resolution with a 330Hz refresh rate, it's unique in the monitor market. There aren't other 45-inch monitors with this same feature, so it doesn't have any direct competition, but this means it's more versatile for different types of games than other large ultrawide displays, like the LG 45GR95QE-B or the Samsung Odyssey OLED G9/G95SC S49CG95. It has everything you'd expect in a high-end gaming monitor, like sharp motion, high-bandwidth ports, and incredible picture quality with a high resolution, deep blacks, and bright highlights. That said, this is also a very expensive monitor, and it's only something to consider if you're going to take advantage of its Dual-Mode feature and want such a large screen. If not, there are other ultrawide OLEDs you can consider for less, like the LG 34GS95QE-B.
Also see our recommendations for the best 34-49 inch monitors, the best ultrawide gaming monitors, and the best LG monitors.
The Samsung Odyssey OLED G9/G95SC S49CG95 and the LG 45GX950A-B are both ultrawide OLED gaming monitors. The main differences between them come down to their sizes and resolutions, as the Samsung is a 49-inch super ultrawide monitor with a 5120x1440 resolution and 240Hz refresh rate. However, the LG is a 45-inch ultrawide monitor, so it's more narrow than the Samsung, and it has a higher 5120x2160 resolution for more detailed images. Although its native 165Hz refresh rate is lower than that of the Samsung, it has a Dual-Mode feature that switches to a 330Hz refresh rate with a lower resolution. This means that choosing one over another comes down to the size and refresh rate that you want. However, the Samsung also has a QD-OLED panel with more vivid colors than the LG.
The LG C5 42 OLED and the LG 45GX950A-B are both large OLED displays with a few differences. The C5 is a small TV that's popular to use as a monitor, so it has many features that are typical of TVs, including a built-in smart system, eARC/ARC audio passthrough, and a processor. The 45GX950A-B has more typical monitor features, like a Dual-Mode that switches its native 5k2k resolution and 165Hz refresh rate to a 1080p resolution and 330Hz refresh rate. Although they both have WOLED panels, there are a few differences, as the C5 gets brighter in HDR, while the 45GX950A-B has a dedicated sRGB mode that results in better accuracy before calibration. Overall, the C5 is the better choice if you want a small TV that you can use as a monitor, while the 45GX950A-B is the better choice if you want an ultrawide that you're going to use more like a typical monitor.
The LG 45GX950A-B is a newer version of the LG 45GR95QE-B, with a few new features. The main difference is that the 45GX950A-B has a higher resolution for more detailed images, and even though it has a lower native refresh rate, it has a Dual-Mode feature that switches it to a 330Hz refresh rate with a lower resolution. This means that the 45GX950A-B is more versatile for different types of games. The 45GX950A-B also has a few added perks, like DisplayPort 2.1 bandwidth and a USB-C port with 90W of power delivery.
The LG 45GX950A-B and the Samsung Odyssey Neo G9/G95NC S57CG95 are both large ultrawide gaming monitors. The Samsung has a bigger 57-inch screen with a higher resolution, and it also offers more horizontal screen space thanks to its super ultrawide aspect ratio. The Samsung even has a higher 240Hz refresh rate than the LG's native 165Hz refresh rate, but the LG has a Dual-Mode feature to switch it to a 330Hz refresh rate with a lower resolution. This means the LG is the better choice if you want a higher refresh rate. The LG also has much better picture quality thanks to its OLED panel, as it displays deep and inky blacks without any blooming, but the Samsung gets brighter.
We buy and test more than 30 monitors each year, all of which we purchase ourselves, without cherry-picked units or samples. We put a lot into each unbiased, straight-to-the-point review, and there's a whole process from purchasing to publishing, involving multiple teams and people. We do more than just use the monitor for a week; we use specialized, custom tools to measure various aspects and deliver objective, data-driven results. We also consider multiple factors before making any recommendations, including the monitor's cost, its performance compared to the competition, and whether it's easy to find.
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