LG UltraGear 27GX790A-B Review: The Monitor That Will Sweep 2025

LG UltraGear 27GX790A-B Review: The Monitor That Will Be a Hit in 2025.

Expert Rating

Pros

Attractive and functional design 😍
Top-notch contrast and good color accuracy 🎨
Class-leading motion clarity 📈
Compatible with AMD FreeSync and Nvidia G-Sync ✅

Cons

Connectivity Limited USB and no USB-C ⚠️
Modest color gamut compared to QD-OLED 🎭
1440p resolution is not as sharp as new 27-inch 4K OLEDs 📉

Our Verdict

He LG UltraGear 27GX790A-B It doesn't have the sharpness of the new 27-inch 4K OLEDs, but its clarity in motion will leave gamers speechless. 😱

Best Prices Today: LG UltraGear 27GX790A-B 💰

Amazon $999.99

The LG UltraGear 27GX790A-B is a OLED monitor The 27-inch monitor, unlike the new 4K OLED monitor series, maintains a 1440p resolution and increases the refresh rate to an astonishing 480Hz. Although it's not the first OLED monitor 480Hz, delivering motion clarity that meets the needs of even the most demanding gamers. 🎮

Read on to find out more, then check out our picks for the best monitors for gaming. 📊

LG Ultragear 27GX790A-B Specifications and Features

The most outstanding feature of the UltraGear 27GX790A-B is undoubtedly its OLED panel. It features an LG panel. WOLED With a native resolution of 2560x1440 and a refresh rate of up to 480Hz, the highest available in the latest generation of OLED displays, the monitor also supports adaptive sync with official compatibility for AMD FreeSync Premium Pro and Nvidia G-Sync.

Screen size: 26.5 inches, 16:9 format
Native resolution: 2560×1440
Panel Type: WLED
Refresh rate: 480Hz
Adaptive Sync: Yes, AMD FreeSync Premium Pro, Nvidia G-Sync
HDR: Yes, VESA DisplayHDR True Black 400 certified
Ports: 2x HDMI 2.1, 1x DisplayPort 2.1, 1x USB-B 3.0 upstream, 2x USB-A 3.0 downstream, 1x 3.5mm headphone jack
VESA Mount: 100x100mm
Audio: None
OLED panel warranty: 2 years on “internal and functional parts” including the panel
Price: $999.99

The monitor's other features are somewhat less impressive. It lacks USB-C for video input or power delivery, has no built-in audio, and doesn't include an RGB LED lighting system. Clearly, the focus here is on delivering the highest possible refresh rate above all else. As for pricing, the LG Ultragear 27GX790A-B's MSRP of $999.99 is similar to the price of alternatives like the Asus ROG Swift PG27AQDP.

LG Ultragear 27GX790A-B Design

The LG UltraGear 27GX790A-B follows the common design language across the recent UltraGear monitor lineup. It features a dark grey finish that’s distinctive yet understated, contributing to a sleek, stealthy aesthetic. Up front, this translates to slim bezels on all sides, including a minimal bottom chin. At the rear, the slim OLED panel is connected to a compact hexagonal backplate that houses the monitor’s menu controls and connectivity.

Some gamers might find the UltraGear 27GX790A-B a bit too subtle for their setup. While it does have RGB-LED lighting, customization is limited and the lighting brightness could be higher. Personally, I enjoy gaming monitors with a stealthy look, and the 27GX790A-B delivers on that.

El monitor viene con un soporte ergonómico que se ajusta en altura, inclinación y giro, y también se puede girar 90 grados para orientación vertical. La base del soporte es grande y mantiene el monitor muy estable en tu escritorio, pero dado que es extremadamente delgada, la mayor parte del espacio que ocupa sigue siendo útil para tareas de escritorio regulares. Un corte en la parte trasera del soporte proporciona cierta cable management.

Overall, the range of adjustment and stand design are similar to what competitors offer, though some brands, such as Asus, still use tripod-style stands that take up more desk space. The UltraGear 27GX790A-B also features a 100x100mm VESA mount for use with third-party monitor stands and arms.

LG Ultragear 27GX790A-B Connectivity

LG ships the UltraGear 27GX790A-B with two HDMI 2.1 ports and a single DisplayPort 2.1 port, providing a total of three video inputs. That’s a good number for a gaming monitor, though I would have liked to see a USB-C input for video, as it’s a great option, especially for connecting a laptop alongside a desktop PC. All available video inputs support the monitor’s full resolution and refresh rate.

La conectividad USB del monitor es un poco decepcionante. Como se mencionó, carece de un puerto USB-C y solo incluye dos puertos USB-A downstream, ambos alimentados por un único puerto USB-B upstream. Esto está bien si solo quieres conectar un teclado y un mouse por cable para una gestión de cables más fácil, pero limita el atractivo del monitor para quienes necesitan múltiples conexiones de periféricos.

Many competitors, including the new generation of 27-inch 4K 240Hz QD-OLED monitors (such as the MSI MPG 272URX), both offer USB-C with Power Delivery, giving them an edge in connectivity. To be fair to LG, though, OLED competitors that sport a 27-inch 1440p 480Hz panel, like the Asus ROG Swift PG27QDP, also lack USB-C.

Features of the LG Ultragear 27GX790A-B

Owners can access the LG UltraGear 27GX790A-B's features via a joystick-style control located on the bottom bezel. It works similarly to competitors, offering quick and intuitive navigation through well-labeled menus.

LG includes the usual array of picture quality settings, such as multiple picture presets, color temperature adjustments, and gamma mode options, along with gaming-specific features like on-screen crosshairs and dark level equalizers that enhance detail in shadowed areas. It's all standard for a monitor of this caliber, but LG takes it a step further. runs well without errors. 👌

Alternatively, you can use the LG Switch app to access most of the monitor's features within Windows. I'm not a huge fan of the app's design, which for some reason resembles that of a smartphone, but it does the job.

The UltraGear 27GX790A-B doesn't have speakers, which is common even in high-end gaming monitors. However, it's worth mentioning that the LG UltraGear 32GS95UE-B, the 32-inch 240Hz OLED model, does include a sound system PixelSound, one of the best monitor sound systems currently available. It would have been great to see it on LG's 27-inch OLED lineup as well.

In our tests, the LG UltraGear 27GX790A-B demonstrated motion clarity that was almost as sharp as a still image. 🖼️

LG Ultragear 27GX790A-B SDR picture quality

The LG UltraGear 27GX790A-B is a new monitor, but it’s not the first 27-inch 1440p 480Hz OLED with an LG W-OLED panel to cross my desk. Because of that, its performance comes as no surprise. It offers excellent contrast and a wide color gamut, though it won’t match the image quality of the new 4K 240Hz models coming to market. 📺

First up, SDR luminance. As the chart shows, OLED monitors are remarkably consistent in this regard, providing a sustained peak SDR brightness around 250 nits. The Ultragear 27GX790A-B doesn't stray from that trend. The brightness level is adequate for most gaming spaces, though it may seem a little dim if the monitor is used in a room with sunlit windows. ☀️

The UltraGear 27GX790A-B has a matte finish that tends to diffuse glare. I prefer a matte finish over a glossy one, but your experiences may vary. The monitor also sports peak brightness modes that seem to minimize brightness fluctuations when moving quickly between bright and dark content, a common problem on older OLED displays (though less prevalent with the current generation).

The UltraGear 27GX790A-B has exceptional contrast thanks to its ability to dim each individual pixel to a minimum brightness of zero nits. This provides a deeper, more immersive image that is especially suitable for gaming and movies. Other OLED monitors offer the same advantage, so the UltraGear 27GX790A-B doesn’t get an advantage here.

In terms of colour gamut, the UltraGear 27GX790A-B delivers great results, but falls a bit behind some competitors. LG's WOLED panel has a narrower colour gamut than Samsung's QD-OLED, meaning that more of the expanded colour gamut standards, such as DCI-P3 and AdobeRGB, remain out of reach. 🌈

This isn’t necessarily a problem for gamers, as the UltraGear 27GX790A-B still looks vivid and punchy. However, it could be a concern for demanding creative professionals who want to view the widest range of colors possible.

Color accuracy, on the other hand, is a plus. The UltraGear 27GX790A-B is more accurate than most OLED monitors I’ve tested, and its accuracy is good enough to be practically perfect in most situations.

The monitor’s color accuracy was bolstered by its color temperature and gamma results. I measured a default color temperature of 6400K, which is just a bit warmer than the 6500K target. Gamma, meanwhile, was accurate with a measured gamma curve of 2.2, meaning content looks as bright as it should. Together, these results translate into a pleasing, accurate picture.

It’s not all good news, though. I did notice a distracting “dirty screen effect” (DSE) while using the UltraGear 27GX790A-B. This is caused by variations in pixel brightness across the OLED panel. All OLEDs face this problem to some degree, but the UltraGear 27GX790A-B had it worse than most, with a horizontal pattern or stripes visible across the screen. LG sent me a replacement at my request, and it also demonstrated the problem.

The DSE isn't really an issue for gamers, which is the target audience of the 27GX790A-B, as it was only visible when the monitor was displaying a simple grey image with little colour variation. However, the problem was very noticeable when using applications like Slack, Gmail, and Word in dark mode.

Sharpness also detracts a bit from using the UltraGear 27GX790A-B for everyday productivity. The monitor’s 2560x1440 resolution looks fine briefly, but some pixelation is visible around small fonts and interface buttons. That was great in 2024, but now, with the arrival of the first 27-inch 4K OLED monitors, buyers have a sharper option. However, this is the sacrifice you have to make if you want a 480Hz refresh rate, as 4K OLED monitors top out at 240Hz.

Overall, the LG Ultragear 27GX790A-B's SDR picture quality is great, but a step behind more attractive competitors.

LG Ultragear 27GX790A-B HDR picture quality

The LG Ultragear 27GX790A-B has the same VESA DisplayHDR True Black 400 certification as most of its competitors, and that translates to its real-world performance.

As the graph shows, the Ultragear 27GX790A-B's HDR brightness is in line with most competitors. The MSI MPG 272URX QD-OLED, with its new 4K QD-OLED panel, improved peak brightness when displaying a small bright object. But in reality, I'm not sure that advantage is obvious in real-world use. That's especially true with HDR games, which tend to be disappointing in their HDR implementation compared to HDR movies and shows.

After testing the monitor, I loaded up my typical selection of HDR test clips. This includes the “Gargantuan” scene from Interstellar and the “Into the Storm” scene from Mad Max: Fury Road. Both looked great in 27GX790A-B. The bright flashes, like the arc of lightning through a dust storm, delivered impact and power. I also saw good detail in brighter objects, such as the accretion disk surrounding the black hole. Interstellar.

LG Ultragear 27GX790A-B Motion Performance

Okay, now we come to it: the real reason to buy the LG Ultragear 27GX790A-B. 🔥

The Ultragear 27GX790A-B’s OLED panel can reach a refresh rate of up to 480Hz. That’s the highest refresh rate currently offered on any consumer OLED panel, and it’s close to the best LCD monitors, though some competitors top out at 500Hz.

A refresh rate Higher brightness generally translates to smoother motion with less motion blur, and the Ultragear 27GX790A-B lives up to expectations. When I reviewed the Asus ROG Swift PG27AQDP, the first 27-inch 1440p 480Hz OLED monitor (which also has an LG WOLED panel), I called its motion clarity “near-perfect.” The same is true for LG’s alternative.

Test clips of League of Legends showed an image that was almost as sharp as a still image. Character silhouettes, spell effects, text, and hit point bars were not only legible, but easy to read. A quick camera pan in a first-person game, like Valorant, revealed near-perfect detail in distant objects.

The advantage over a 240Hz OLED, which already offers great motion clarity, is obvious. Keep in mind, though, that a game needs to be rendered at a frame rate of up to 480 frames per second to take full advantage of the 480Hz refresh rate. That means you’ll need powerful hardware to take full advantage of the 27GX790A-B’s motion clarity.

Although the Ultragear 27GX790A-B It looks great in motion, but it does have one slight disadvantage compared to Asus’ 480Hz alternative. Asus supports black frame insertion, which it calls Extreme Low Motion Blur (ELMB), at both 120Hz and 240Hz. Thanks to a trick of human perception, inserting a black frame between each regular frame can reduce motion blur in exchange for lower perceived luminance. Asus’ ELMB gives the ROG Swift PG27AQDP an edge in motion clarity when gaming at less than 240Hz.

The Ultragear 27GX790A-B provides official support for both AMD FreeSync Premium Pro and Nvidia G-Sync. Since they’re similar, most monitors that support one will support both. Still, it’s good to see LG providing official support for both, as it gives owners peace of mind that the monitor will work properly with both AMD and Nvidia hardware.

Is the LG UltraGear 27GX790A-B worth it?

The LG UltraGear 27GX790A-B is an excellent choice for competitive gamers seeking outstanding motion clarity along with great contrast and color performance. While its sharpness and color gamut don't quite match the latest models, it's still a great option. 4K monitors 240Hz QD-OLED displays are starting to arrive in stores; a 1440p OLED panel at 480Hz has a clear advantage in motion clarity. 🚀

Compared to its closest competitor, the Asus ROG Swift PG27AQDP, the 27GX790A-B is very similar in performance. The LG has the advantage of a more compact stand, but unlike the Asus model, it lacks a threaded mount at the top of the stand. The LG also doesn’t offer a black frame insertion feature, so its motion clarity won’t match that of the Asus at lower refresh rates.

Ultimately, choosing between the two comes down to personal preference, or which monitor is on sale when you're ready to buy. 🛒