The Acer Predator XB273U GXbmiipruzx is a great all-around monitor with excellent gaming performance and plenty of features. It has an overclocked 270Hz refresh rate and exceptionally low input lag that make gaming feel smooth and responsive. It also has an incredible response time and variable refresh rate (VRR) support. It feels solidly built, and it has very good ergonomics so you can set it as you like. It's an IPS monitor, so the contrast ratio is limited, but it's not bad overall, and the monitor has wide viewing angles, making it easy to share content or game with a friend. It also gets very bright, enough to overcome glare in most lighting conditions. While its HDR brightness is only decent, it's on the brighter side for a monitor, and it has one of the widest HDR color gamuts we've tested, along with an exceptional SDR color gamut. It can also display 10-bit color in 1440p at 270Hz by using Display Stream Compression (DSC).
The Acer Predator XB273U GX is an impressive monitor for mixed usage. It has very good ergonomics so that you can adjust it easily however you like, and it gets bright enough to overcome glare in an office or well-lit room. Its wide color gamut is great for content creation, and it delivers a fairly satisfying HDR experience. Finally, it's amazing for gaming, with a high refresh rate, very fast response times, low input lag, and VRR support.
The Acer Predator XB273U GX is a great office monitor. It's a good size for multitasking, and the 1440p resolution delivers a crisp image. It also has very good ergonomics, allowing you to adjust it as you please. While its vertical viewing angles are only okay, it has very wide horizontal viewing angles for sharing content. To top it off, it gets bright enough to overcome glare in most environments.
The Acer Predator XB273U GX is an excellent gaming monitor. It has a high overclocked 270Hz refresh rate and outstanding response times, both at its max refresh rate and 60Hz. It's compatible with FreeSync and G-SYNC; however, VRR doesn't work with the overclock setting, and it locks in overdrive, which may be annoying. Input lag is extremely low but somewhat higher at 60Hz.
The Acer Predator XB273U GX is great for multimedia. Its 27 inch screen is a good size for watching videos, and its 1440p resolution produces a crisp image. It also has wide viewing angles, which is great for watching with a friend. Reflection handling is decent, and it gets quite bright to overcome glare. Unfortunately, it has a mediocre contrast ratio, so blacks may appear more like gray in the dark.
The Acer Predator XB273U GX is impressive for media creation. It has an exceptional color gamut in both HDR and SDR, including full coverage of the Adobe RGB color space used in photo editing. It also has good ergonomics, so you can adjust the screen to your ideal position. Unfortunately, it has a low contrast ratio, so it can't produce really deep blacks.
The Acer Predator XB273U GX is good for HDR gaming. Its gaming features are top-notch, with a high 270Hz refresh rate, fast response times, and low input lag. It also supports VRR to reduce screen tearing. It has one of the widest HDR color gamuts we've tested and it gets decently bright in HDR. It can also display 10-bit color in 1440p at 270Hz thanks to DSC. However, its low contrast ratio makes blacks look more grayish in the dark.
The Acer Predator XB273U GX has a very similar design to the Acer Predator XB273K Pbmiphzx. It looks good with gamer-oriented touches and slight red accents.
The stand is slightly raised and has a wide footprint, but there's still plenty of space in front. It supports the monitor well with no wobble.
It has very good ergonomics, similar to the Acer Predator XB273K Pbmiphzx, but with the added ability to rotate into portrait mode in either direction.
The back is fairly simple, with the Acer branding and some brushed metal texture in the plastic at the top. There's a cutout in the stand for cable management.
The monitor itself is quite thin, but it's a lot thicker with the stand.
The monitor feels well-built. It's made of decent-quality plastic, and there's not too much flex. There are no obvious gaps or issues.
The Acer XB273U GX has a passable contrast ratio. It's better than the typical 1000:1 contrast of most IPS panels, although contrast can vary a bit between units.
The Acer XB273U GX doesn't have local dimming. The video above is provided for reference only.
The Acer Predator XB273U GX has impressive SDR peak brightness, even higher than the advertised 400 nits. It's very consistent across different scenes and should be bright enough to overcome glare in most settings.
We measured SDR brightness after calibration in the 'User' Picture Mode, with Brightness set to max.
HDR peak brightness is decent. It meets the brightness requirement for its DisplayHDR 400 certification and stays very consistent across different scenes. It should be bright enough for a satisfying HDR gaming experience, but it may not be bright enough to make HDR movies really pop.
We measured HDR brightness in 'HDR' mode, with Brightness set to max.
The Acer XB273U GX has great horizontal viewing angles, so the image should stay accurate from the sides.
The vertical viewing angles are okay, but the image may lose a bit of accuracy if viewed from above or below.
The Acer Predator XB273U has excellent gray uniformity, although this can vary between units. The corners and edges are darker, but there's not much dirty screen effect, and uniformity is even better in near-dark scenes.
Black uniformity is okay. There's a bit of noticeable clouding, as well as some backlight bleed near the top and bottom edges, but it's not bad overall. Note that black uniformity may vary between units.
The Acer Predator XB273U GX has excellent out-of-the-box color accuracy, though this can vary between units. The colors are excellent, most are only slightly off, and the white balance is great. Gamma follows the curve very well, and the color temperature is fairly close to our 6500K target, albeit slightly on the warmer side. We used the 'Standard (sRGB)' mode because it's the most accurate.
After calibration, the accuracy is fantastic. The color temperature is even closer to the 6500K target, and gamma follows the curve well, although bright scenes may be a bit over-brightened. Any remaining color or white balance inaccuracies shouldn't be noticeable to the naked eye.
You can download our ICC profile calibration here. This is provided for reference only and shouldn't be used, as the calibration values vary per individual unit, even for the same model, due to manufacturing tolerances.
The Acer Predator XB273U has an exceptional SDR color gamut. It has full coverage of both the sRGB color space used in most content and the Adobe RGB color space used in professional photo editing. If you're not in sRGB mode, some colors may appear oversaturated. Greens and reds may also be oversaturated in Adobe RGB since the gamut covers more than the required Adobe RGB color space.
SDR color volume is outstanding. It only has trouble reproducing very dark, saturated colors due to its low contrast ratio. Otherwise, colors look vibrant at a wide range of luminance levels.
The Acer Predator XB273U can display a wide color gamut for HDR content, with remarkable coverage of the DCI P3 color space and impressive coverage of the wider Rec. 2020. Its HDR tone mapping is excellent as well, with very few inaccuracies.
HDR color volume is good, although it's limited by the monitor's low contrast ratio.
There are no signs of temporary image retention, but this can vary between units.
Gradients look incredible. There's hardly any visible banding.
There's a bit of color bleed, mostly in the vertical columns. However, it shouldn't be too noticeable with real content.
The Acer Predator XB273U has decent reflection handling. It does a good job of diffusing light, but it's still best to avoid placing it directly across from a window or light source.
Text clarity is good. Enabling ClearType (top photo) makes diagonal and curved lines look clearer, as seen on the R, N, and G.
|Overdrive Setting||Response Time Chart||Response Time Tables||Motion Blur Photo|
The Acer Predator XB273U GX has an incredible response time at its max refresh rate, resulting in exceptionally clear motion in fast-moving content. We recommend the 'Normal' overdrive setting, as it's the fastest and the amount of overshoot is acceptable. The 'Off' setting has no overshoot, but it's a bit slower, while the 'Extreme' setting has too much overshoot.
|Overdrive Setting||Response Time Chart||Response Time Tables||Motion Blur Photo|
At 60Hz, the response time is still remarkable, although you may notice a bit more motion blur. The best overdrive setting at 60Hz is 'Off' because both 'Normal' and 'Extreme' produce too much overshoot.
The Acer Predator XB273U GX has a flicker-free backlight, which can help reduce eye strain.
The Acer XB273U GX has an optional Black Frame Insertion (BFI) feature that flickers the backlight to help reduce motion blur, called Visual Response Boost (VRB). It only works above 120Hz and can't be used at the same time as VRR. Note that our BFI score is based on the range at which it can flicker, not its actual performance.
The Acer XB273U GX has a native 240Hz refresh rate, which can be overclocked to 270Hz. It supports Adaptive Sync natively, is FreeSync-compatible, and is certified as G-SYNC-compatible. Unfortunately, you can't enable VRR while 'Overclock' is on, meaning the monitor is limited to 240Hz with VRR. Enabling VRR also locks the overdrive setting to 'Normal'. While that's the recommended setting for the max refresh rate, it's not recommended for 60Hz because the overshoot is too noticeable, which could be frustrating if you're playing low frame rate games.