The Acer Predator X27U bmiipruzx is a 27-inch OLED gaming monitor that's also sold at Best Buy as the X27U Xbmiipruzx. It has a 1440p resolution and 240Hz refresh rate, using the same panel as competing models that have those same specs, like the ASUS ROG Swift OLED PG27AQDM, LG 27GR95QE-B, and Corsair XENEON 27QHD240. It has features for both gaming and productivity, as it supports FreeSync variable refresh rate (VRR) support and G-SYNC compatibility, and it has DisplayPort 1.4 and HDMI 2.0 ports. On top of that, it includes a USB-C port so you can quickly connect a laptop, and it has a KVM switch that makes it easy to switch between devices and use the same keyboard and mouse.
Our Verdict
The Acer X27U is excellent for most uses. It excels as a gaming monitor because it has a near-instantaneous response time for smooth motion, a fast 240Hz refresh rate, and low input lag at higher refresh rates, but the input lag increases at lower refresh rates. It also displays perfect blacks without any blooming, which is ideal for gaming or watching content in dark rooms. Even if you want to watch content in bright rooms, it has fantastic reflection handling but doesn't get bright enough to fight intense glare. It's also excellent for watching content in HDR as it displays a wide range of colors, but it can't display most vivid colors. Lastly, it's good for the office and excellent for content creation as it has incredible ergonomics and wide viewing angles, but it has text clarity issues, and OLEDs like this one risk permanent burn-in.
- Incredible ergonomics make it easy to adjust.
- Wide viewing angles.
- Fantastic reflection handling.
- Near-instantaneous response time.
- Perfect black levels.
- Limited peak brightness.
- Text clarity issues.
- Risk of permanent burn-in.
The Acer X27U is good for the office, but it has some limitations. It has wide viewing angles and incredible ergonomics, making it very easy to adjust to an ideal position. Also, it has fantastic reflection handling to reduce glare from strong light sources, but it doesn't get bright enough to fight glare in a well-lit office space. Unfortunately, there are text clarity issues as programs don't render text well with its subpixel layout. On top of that, OLEDs like this one risk permanent burn-in when exposed to the same static elements over time, like if you have a taskbar on the screen all the time.
- Incredible ergonomics make it easy to adjust.
- Wide viewing angles.
- Fantastic reflection handling.
- Limited peak brightness.
- Text clarity issues.
- Risk of permanent burn-in.
The Acer Predator X27U is amazing for gaming. It has a fast refresh rate that's ideal for competitive gaming, and it has FreeSync VRR and G-SYNC compatibility to reduce screen tearing. Motion looks smooth at any refresh rate thanks to its near-instantaneous response time, and it has low input lag for a responsive feel at high refresh rates. However, the input lag increases at lower refresh rates, which is disappointing for competitive gaming. While it's excellent for PC gaming, it has limited compatibility with gaming consoles because it doesn't support HDMI 2.1 bandwidth, and it doesn't support VRR with the PS5 or Xbox Series X|S either.
- 240Hz refresh rate.
- FreeSync VRR and G-SYNC compatibility.
- Near-instantaneous response time.
- Low input lag at high refresh rates.
- Perfect black levels.
- Input lag increases at low refresh rates.
- Vertical lines in dark gray screens, like menus.
- Can't take full advantage of current-gen gaming consoles.
The Acer X27U is fantastic for media consumption. Its near-infinite contrast ratio makes it an incredible choice for watching content in dark rooms, as it displays deep blacks without any blooming. It's still good if you want to use it in a room with a few lights around, as it has fantastic reflection handling, but it doesn't get bright enough to fight intense glare in really bright rooms. On the plus side, it has wide viewing angles and incredible ergonomics, making it very easy to watch content with a friend next to you and adjust the screen to an ideal position.
- Incredible ergonomics make it easy to adjust.
- Wide viewing angles.
- Fantastic reflection handling.
- Perfect black levels.
- Limited peak brightness.
- Vertical lines in dark gray screens, like menus.
The Acer Predator X27U is excellent for media creation. It displays a wide range of colors in SDR and has good accuracy before calibration, but you still need to calibrate it for the most accurate colors. Its incredible ergonomics make it easy to adjust, like if you often need to share your screen with a coworker or client, and with wide viewing angles, the image remains consistent from the sides. Unfortunately, it has text clarity issues, and OLEDs like this one risk burn-in when exposed to the same static elements over time.
- Incredible ergonomics make it easy to adjust.
- Wide viewing angles.
- Fantastic reflection handling.
- Good accuracy before calibration.
- Limited peak brightness.
- Text clarity issues.
- Risk of permanent burn-in.
The Acer X27U is excellent for HDR. It displays deep and inky blacks thanks to its near-infinite contrast ratio, and there isn't blooming around bright objects. While it displays a wide range of colors, it has a limited color volume, so not all colors are vivid, and because of its low HDR peak brightness, some highlights don't pop against the rest of the image.
- Perfect black levels.
- Displays wide range of colors.
- No blooming around bright objects.
- Limited peak brightness.
- Can't display most vivid colors.
Changelog
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Updated Mar 03, 2025:
Added to Additional Features that users have reported a pop-up about image retention can appear after less than four hours of use.
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Updated Nov 18, 2024:
Added in the Intro and Variants sections that there's a variant sold at Best Buy as the X27U Xbmiipruzx, and it performs the same.
- Updated Apr 12, 2024: Added that the MSI MPG 271QRX QD-OLED has better HDR Color Volume.
- Updated Mar 26, 2024: Added that the LG 27GS95QE-B has higher SDR Brightness.
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Differences Between Sizes And Variants
We tested the 27-inch Acer X27U (model code bmiipruzx), which is the only size available for this monitor. It's also available at Best Buy as the Acer Predator X27U Xbmiipruzx, and the results are also valid for it. The full model code may vary between regions and even retailers.
| Model Codes | Size | Panel Type | Resolution | Max Refresh Rate |
|---|---|---|---|---|
|
X27U bmiipruzx X27U Xbmiipruzx |
27" | OLED | 1440 | 240Hz |
Our unit was manufactured in April 2023; you can see the label here. We tested it with firmware 2.0.
Popular Monitor Comparisons
The Acer Predator X27U is an excellent gaming monitor. Compared to the rest of the gaming monitor market, it offers everything most PC gamers are looking for, like a high refresh rate, incredible motion handling, and a 27-inch OLED screen. However, it can't take full advantage of gaming consoles, so getting a 4k monitor with HDMI 2.1 bandwidth is a better alternative for those gamers. While it's excellent for gaming, it falls short against competing models that use the same panel, as it doesn't get as bright as the ASUS ROG Swift OLED PG27AQDM, and has higher input lag than the LG 27GR95QE-B. Even if it's the cheapest option out of these 240Hz OLED monitors, only consider it if you don't mind all these trade-offs, or for a bit more, you can get the Corsair XENEON 27QHD240, which supports HDMI 2.1 bandwidth.
See our recommendations for the best 240Hz monitors, the best 1440p gaming monitors, and the best 27-inch gaming monitors.
The Acer Predator X27U bmiipruzx and the AOC AGON PRO AG276QZD2 are 27-inch 240Hz OLED gaming monitors. The Acer is the better option, as it creates a more immersive experience by displaying a wider range of colors. On the other hand, the AOC gets brighter, making it the better choice to use in a well-lit room.
The LG 27GR95QE-B and the Acer Predator X27U bmiipruzx use the same panel but have a few differences. While the Acer gets brighter in SDR, the LG gets a bit brighter in HDR and has an improved color volume for more vivid colors. The LG also has HDMI 2.1 bandwidth that lets it take full advantage of gaming consoles, which the Acer doesn't have. On the other hand, the Acer has a few extra features, like a KVM switch and a USB-C port, making it easier to connect multiple devices. It also has a more ergonomic stand, so it's easier to adjust. Lastly, the Acer has less overshoot with fast-moving objects at lower refresh rates, but the LG has lower input lag.
Although they share similar names, the Acer Predator X27 bmiphzx and the Acer Predator X27U bmiipruzx are different types of monitors. The X27 is a 4k, 144Hz monitor with native G-SYNC support, while the X27U is a 1440p, 240Hz monitor, so they're aimed at different types of gamers: the X27 is better for playing detailed games with NVIDIA graphics card, and the X27U is better for high refresh rate gaming. On top of that, they deliver different picture quality as the X27 is LED-backlit, allowing it to get brighter, while the X27U has an OLED panel, so it displays deeper blacks.
The ASUS ROG Swift OLED PG27AQDM and the Acer Predator X27U bmiipruzx use the same panel but have a few differences. The ASUS gets brighter in HDR and also has an improved color volume for more vivid colors. The ASUS also has lower input lag for a more responsive feel, but only after a firmware update. On the other hand, the Acer has a few extra features, like a KVM switch and a USB-C port, making it easier to connect multiple devices. It also has a more ergonomic stand, so it's easier to adjust.
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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