The BenQ ZOWIE XL2566K is the flagship model in BenQ's ZOWIE lineup of gaming monitors, sitting above the BenQ ZOWIE XL2546K. It uses a TN panel designed to deliver the best gaming experience possible, and it's one of the only monitors on the market that offers a customizable overdrive setting, meaning you can fine-tune the gaming experience to your preferences. It comes with a unique S-Switch wired remote that makes it a breeze to navigate the settings menu, as well as side panels to keep you focused on the game.
The BenQ ZOWIE XL2566K is an okay monitor overall for mixed usage, but it's designed and intended for gaming. It's decent for office use or watching videos during the day, thanks to its good peak brightness and good reflection handling. It delivers a great gaming experience with an incredible response time, customizable overdrive settings, and a fast refresh rate. It's also decent for media creation, with excellent accuracy before calibration and near-perfect coverage of the sRGB color space.
The BenQ ZOWIE XL2566K is a decent monitor for office use. It has good peak brightness in SDR and good reflection handling, so it can easily overcome glare in a bright office. It also has fantastic ergonomics, so you can easily place it in an ideal viewing position. On the other hand, it has a relatively low pixel density, so text clarity is just decent, the image isn't very sharp, and the image rapidly degrades when viewed at an angle, so anyone looking at your screen beside you will see a worse image.
The BenQ ZOWIE XL2566K is designed for gamers, so it's no surprise that it delivers a great gaming experience. It has an incredibly fast refresh rate and an incredibly fast response time, resulting in a crystal-clear gaming experience with very little motion blur behind fast-moving objects. It also offers customizable overdrive settings, meaning you can get the best motion handling possible at any refresh rate. It has superb low input lag and supports FreeSync variable refresh rate technology to reduce screen tearing.
The BenQ ZOWIE XL2566K is just alright for watching videos. It has good peak brightness and good reflection handling, so it's best-suited for watching during the day and has excellent accuracy before calibration. It's not a good choice for watching in a dark room due to its low contrast ratio and just alright black uniformity, and it's a bad choice for watching with other people due to its poor viewing angle.
The BenQ ZOWIE XL2566K is decent for media creation. It has fantastic ergonomics, so you can easily place it in an ideal viewing position or turn it to show something to your clients or colleagues. It also has excellent accuracy before calibration and nearly perfect coverage of the sRGB color space, so you don't have to worry about the extra expense of having it calibrated. Unfortunately, it has a low contrast ratio, so it's not well-suited for a dark room, and the image degrades rapidly when viewed from an angle.
The BenQ ZOWIE XL2566K doesn't support HDR.
We tested the 24.5-inch BenQ ZOWIE XL2566K, which is part of BenQ's XL-K series of gaming monitors, some of which are listed below. These results are only valid for this specific model, though.
Model Code | Size | Resolution | Max Refresh Rate | DyAc+ |
XL2566K | 24.5" | 1080p | 360Hz | Yes |
XL2546K | 24.5" | 1080p | 240Hz | Yes |
XL2540K | 24.5" | 1080p | 240Hz | No |
XL2746K | 27" | 1080p | 240Hz | Yes |
Our unit was manufactured in September 2022, and you can see the label here.
The BenQ ZOWIE XL2566K is a great gaming monitor with fantastic motion handling, making it an excellent choice for esports gamers. Unfortunately, its TN-type panel delivers lackluster overall picture quality, and it lacks many features found on most recent gaming monitors, like HDR support or local dimming. It's only recommended if you only care about motion performance.
Also see our recommendations for the best budget and cheap gaming monitors, the best 1080p monitors, and the best gaming monitors.
The BenQ ZOWIE XL2546K and the BenQ ZOWIE XL2566K are extremely similar overall, but the newer XL2566K offers better motion handling and a customizable overdrive setting. When comparing the same settings across both displays, the XL2566K delivers a faster rise/fall time and significantly less overshoot, resulting in clearer motion with less ghosting or white trails behind fast-moving objects.
The Dell Alienware AW2523HF and the BenQ ZOWIE XL2566K deliver a very similar experience. The Dell has a much better viewing angle, delivering a more consistent visual experience when viewed at an angle. The Dell gets brighter in SDR to overcome more glare in a bright room. The BenQ has a more customizable gaming experience and more consistent motion handling than the Dell, especially at lower refresh rates.
The Dell Alienware AW2521H is better than the BenQ ZOWIE XL2566K. The Dell has a much better viewing angle, delivering a more consistent visual experience when viewed at an angle. The Dell also supports HDR and gets brighter in SDR to overcome more glare in a bright room. The Dell also natively supports G-SYNC variable refresh rate technology, delivering a tear-free gaming experience with NVIDIA graphics cards.
The ASUS ROG Swift 360Hz PG259QN is a much better monitor overall than the BenQ ZOWIE XL2566K, but the BenQ is still a good choice for gamers. The ASUS delivers much better picture quality, with a wider viewing angle, HDR support, and better gradient handling. On the other hand, the BenQ delivers better motion handling, with less overshoot and a faster response time, so it's a slightly better choice for esports gamers who prefer motion handling over picture quality.
The BenQ ZOWIE XL2566K has a simple design with a definite gamer aesthetic. The bezels are roughly the same thickness on all four sides, which looks nice, but they're thicker and deeper than more premium models. There are two adjustable shields on either side of the monitor to keep you focused on your game. It has a few nice convenience features, including a built-in headphone hook to keep your desk organized when you're not gaming.
The build quality is just okay. It's made entirely of plastic, and it feels a bit cheap. The plastic panels have little flex to them, which is good, and it doesn't seem likely to break. The bezels aren't properly attached to the screen, though, and on our unit, it's easy to lift them off the screen.
The BenQ ZOWIE XL2566K has fantastic ergonomics, so you can easily and quickly adjust it to an ideal viewing position. The height adjustment even has a ruler, so you can quickly adjust it to the perfect height depending on your needs. There's a hole in the stand for cable management.
The stand is simple, with a small, flat base, so you can easily place things in front of it or stash your keyboard when you're not gaming. The height adjustment is on an angle, so the total thickness varies depending on the height you set. The posted measurements are at the thickest position.
There's a joystick on the back of the monitor for navigating the monitor's on-screen display and two preset buttons on the back. There's also an external S-Switch controller that makes it even easier to navigate the menus and change settings on the fly.
Unfortunately, this monitor doesn't have a local dimming feature. We still film this video on the monitor so you can compare the backlight performance to another monitor with local dimming.
The BenQ ZOWIE XL2566K has good peak brightness in SDR. It's bright enough to overcome glare, and there's very little variation in peak brightness with different scenes. The minimum brightness is a bit high, so it's not ideal for users looking to use it in a completely dark room.
These measurements are taken after calibration, in the 'Standard' Picture Mode, with the Brightness at max.
This monitor doesn't support HDR.
Unfortunately, the horizontal viewing angle is just passable. Colors shift rapidly as you move off-center and appear noticeably washed out at a moderate angle, so it's not ideal for sharing your screen with someone sitting beside you.
Unfortunately, like all monitors with a TN panel, the vertical viewing angle is poor. Looking at it from above, the image fades and appears washed out, but looking at it from below, the image is completely inversed and looks bad.
The BenQ ZOWIE XL2566K has excellent accuracy before calibration. The white balance is excellent, with no noticeable issues, and most colors are displayed properly. Pure blues are a bit off, but it's not noticeable. Colors aren't oversaturated, and it covers most of the sRGB gamut area without needing a dedicated sRGB mode. Gamma tracks the sRGB target curve nearly perfectly.
The color accuracy and white balance are superb after calibration, but it doesn't make a noticeable difference on this monitor, as it was already excellent.
The SDR color gamut is excellent. It displays most of the sRGB color space used by most desktop and web content. Sadly, it can't display any of the wider range of colors supported by the Adobe RGB color space, so it's not suited for print or photo processing using this color space.
The color volume is fantastic. It displays bright colors well in both the sRGB and Adobe RGB color spaces. In both cases, it's limited by its incomplete color gamut and can't display dark colors well due to its low contrast ratio.
This monitor doesn't support HDR.
This monitor doesn't support HDR.
The maximum refresh rate of this monitor is only supported over DisplayPort due to the bandwidth limitations of the HDMI port on this monitor.
Although not officially certified for either AMD FreeSync or NVIDIA G-SYNC variable refresh rates, it works well with both. G-SYNC Compatible only works over DisplayPort, but FreeSync works properly over both connectors.
Overdrive Setting | Response Time Chart | Response Time Tables | Motion Blur Photo |
Premium | Chart | Table | Photo |
High | Chart | Table | Photo |
Customize (8) | Chart | Table | Photo |
Off | Chart | Table | Photo |
The response time at the max refresh rate is incredible, resulting in crystal clear motion with almost no noticeable blur behind fast-moving objects. Like most gaming monitors, you can adjust the level of overdrive to optimize the motion handling to your liking. There are a few preset settings, but unlike most monitors, you can choose a custom overdrive level. A custom setting of '8' delivers the best motion experience overall, with the fastest rise/fall time and no overshoot. Higher settings deliver a faster rise/fall time, but they show more distracting overshoot artifacts and inverse ghosting.
Overdrive Setting | Response Time Chart | Response Time Tables | Motion Blur Photo |
Premium | Chart | Table | Photo |
High | Chart | Table | Photo |
Customize | Chart | Table | Photo |
Off | Chart | Table | Photo |
The response time at 120Hz is remarkable, delivering clear motion that looks almost as good as it does at the max refresh rate. There's slightly more overshoot when using the same settings at the max refresh rate, but it's not noticeable.
Overdrive Setting | Response Time Chart | Response Time Tables | Motion Blur Photo |
Premium | Chart | Table | Photo |
High | Chart | Table | Photo |
Customize | Chart | Table | Photo |
Off | Chart | Table | Photo |
The response time at 60Hz is great overall. The rise/fall time is extremely quick, as most pixels transition close to their final state quickly, but the total response time is slow, resulting in more noticeable motion blur than at faster refresh rates. The customizable overdrive setting is very convenient here, as the same '8' setting used at higher refresh rates delivers a much faster rise/fall time than the preset overdrive modes.
Refresh Rate | BFI Setting 60Hz | Motion Blur Photo |
60Hz | Premium | Photo |
High | Photo | |
Off | Photo | |
120Hz | Premium | Photo |
High | Photo | |
Off | Photo | |
360Hz | Premium | Photo |
High | Photo | |
Off | Photo |
The BenQ ZOWIE XL2566K has a versatile backlight strobing feature, which BenQ calls DyAC+, to improve the appearance of motion. It's available across a wide range of refresh rates, nearly the full range of the monitor itself. Sadly, although you can enable it as low as 60Hz, this doesn't work, as it still flickers at 120Hz.
Thanks to its fast refresh rate, there's very little input lag when gaming, ensuring a responsive gaming experience. The input lag is noticeably higher at 60Hz, even higher than most other monitors at 60Hz, but it's not too bad.
Sadly, the low resolution of this screen results in a very low pixel density, so text and images aren't very sharp.
There's a mini-USB port on the back of the monitor, but it's only for the S-Switch remote.
This is a pretty barebones monitor with no significant additional features. There are a few picture mode modifiers like Black eQualizer, which adjusts the gamma to make it easier to spot dark details, and a blue light filter. It also comes with the S-Switch remote, making it very easy to navigate the on-screen display or switch between preset modes.