The Asus PB277Q is a decent 27 inch TN-type LCD monitor with a 75 Hz refresh rate and low input lag for gaming. It has better than average motion handling thanks to its very fast response time and can get bright to overcome ambient glare. Unfortunately, though, its very limited viewing angle and mediocre picture quality reduce its versatility significantly.
The design of the Asus PB277Q is good. It doesn't really stand out but looks quite clean and minimalistic from the front. The stand has a small footprint, but does support the monitor well. The monitor has a decent range of ergonomic adjustments, and some basic cable management at the back to keep a tidy desk.
Update 07/04/2018: Weight (with stand) and Weight (without stand) have been added to the review.
The monitor has a great range of ergonomic adjustments available, and most importantly, the height can be adjusted within a fairly good range. The monitor swivels left and right, however, it always drags on the table surface so it isn't as smooth as other monitors.
The rear of the monitor looks good, with a textured plastic finish. The clip at the back of the stand is useful for cable management, as shown here.
The Asus PB277Q picture quality is not bad. The low contrast ratio and terrible black uniformity mean that dark room performance could be better, especially when displaying dark content. Luckily, when the monitor is set in a brighter environment, the picture quality is more decent and the peak brightness is high enough so that it can easily fight glare from a bright lamp or windows.
The viewing angles are a bit disappointing for a PC monitor, especially if the monitor is viewed from the top. The gray uniformity is very good though, and distraction like the dirty screen effect is not noticeable here. Out of the box, the monitor accuracy is excellent and covers almost completely the sRGB color space. Finally, the monitor does not have more advanced features like local dimming and HDR support but offers a decent performance.
The Asus PB277Q monitor has a disappointing contrast ratio. As with other monitors using a TN panel, dark room performance is not great as blacks tend to look gray and give a washed out look to dark scenes in multimedia content. When used in a brighter room, like an office space, the picture quality is much better, black tends to look deeper when there is some ambient light. Since the PB277Q does not have a local dimming feature, the contrast ratio can be raised further.
The Asus PB277Q monitor does not have a local dimming feature. The video is for reference only.
The ASUS PB277Q has a good peak brightness while displaying SDR content. At around 300 nits on average, it should be bright enough to be enjoyable in most viewing environments.
HDR is not supported.
Poor horizontal viewing angle. While red shades remain particularly accurate when viewed at an angle, the PB277Q behaves as expected of a TN-type LCD monitor. Its black level rises very quickly when moving off axis, causing contrast and picture quality to diminish significantly.
The Asus PB277Q's vertical viewing angle, while being slightly better than the average TN-type monitor, is still quite lacking. When viewed from below, colors shift dramatically to inverted tones, and the loss of brightness is both very rapid and significant. Its picture quality is retained a little better when looking at it from above, however, making this less of an issue for those that often look at their monitors while standing up.
Very good gray uniformity for this Asus monitor, especially the 50% gray. This results in a uniform image, with very little dirty screen effect even when playing sports games or scrolling through web pages. On the test picture, we can see that the top of the screen is a bit darker, but this is due to the sub-par vertical viewing angle which results in a different shade when viewed at a small angle. Besides this, there is a visible warmer zone near the center, but this isn't really an issue.
When it comes to the 5% gray uniformity, the PB277Q is even better. The bottom edge is slightly brighter, and this is mainly caused by the backlight bleed that is also visible on the black uniformity test picture. Overall, this results in an improved dark scene performance.
This monitor black uniformity is terrible. The monitor suffers from major backlight bleed and all edges are very bright. This shows up as soon that you display anything really dark and is particularly bad when displaying movies or video games with dark scenes.
The color temperature is really close to our 6500K target and the overall gamma, just a bit short of our 2.2 target, but the gamma curve is tracking very closely the target curve, which is better than most monitors out of the box.
After calibration, the monitor accuracy is only marginally better since it was already excellent out of the box. The biggest correction was done on the colors, which are now mostly right on target, especially the 100% primaries. The rest of the corrections were very small and overall, this is a remarkable accuracy for a PC monitor.
You can download our ICC profile calibration here.
Good SDR color gamut. The PB277Q's s.RGB coverage is almost perfect, with very minimal deficiency in the green primary. Unfortunately, though, it lacks proper support for the wider Adobe RGB color space.
Good SDR color volume. This monitor's good coverage of standard gamuts helps it reproduce the equivalent volume well. Its main deficiency is caused by its poor contrast ratio, which stops it from being able to reproduce darker colors.
HDR color gamuts are not supported.
HDR color gamuts are not supported.
Perfect result here as no image retention could be noticed while running our test.
Great result on the gradient test for the Asus PB277Q. Beside the 8-bit banding due to the limitation of the monitor, very few issues (small color shades issues in the very dark colors) can be noticed, which is great.
The Asus PB277Q does not produce color bleed.
Motion looks good on the Asus PB277Q. It has outstanding pixel response time and a flicker-free backlight, which is great. However, it only has a fixed 75 Hz refresh rate without any variable refresh rate feature like FreeSync, making it not as good for gaming as many other gaming monitors.
Excellent pixel response time, even better than some other TN monitors like the AOC Agon AG271QX. This results in very little blur following fast moving content, which is great for fast paced gaming. Almost all the blur in the photo is due to 75 Hz persistence, which is great. 'Trace Free 60' was the most balanced overdrive setting; '80' was also very good, making the response time a little faster but also adding a bit more overshoot. Those who don't mind overshoot artifacts may prefer 'Trace Free 80', but most people will be better served by '60'.
The Asus PB277Q has a flicker-free backlight, which is great as it provides smooth motion when browsing the web or watching videos. Unfortunately, the monitor lacks an optional black frame insertion feature to add flicker which can be useful to clear up motion. Many people do find 75 Hz flicker distracting so it's not a big loss.
The monitor has a fixed 75 Hz refresh rate, without any variable refresh rate features like FreeSync. While this is better than monitors with a fixed 60 Hz refresh rate and will be decent for most usages and gaming, it won't provide as good of a gaming experience as monitors with a higher refresh rate and a VRR implementation.
The Asus PB277Q has a large 27" 1440p panel, which will impress during almost any usage. It also has excellent low input lag, which is great for all usages but especially for gaming.
Lowest input lag possible at the center of the screen, when the monitor is displaying an alternative resolution at its native refresh rate. The non-native resolution tested depends on the native resolution of the monitor, following this pattern unless otherwise specified in the Input Lag text:
|Native Resolution||Non-Native Resolution Tested|
Excellent low input lag. The input lag at 60 Hz is a little higher because of the lower frame rate, but it's still very good. Unfortunately, no non-native resolution can run at 75 Hz without using a custom resolution; they run at 60 Hz instead.
There is also a 3.5mm analog audio line in, which can feed the headphones and speakers.
The Asus PB277Q has a well laid out on-screen display that is made even easier to navigate by using the mini-joystick on the side. The OSD contains all the standard features of a monitor like adjustable image and overdrive settings, plus a few other features like a picture-in-picture mode and a crosshair overlay. The monitor also has built-in speakers, but they don't get very loud.
The monitor has built-in speakers that can be fed from the DisplayPort and HDMI inputs, or from a separate 3.5mm line in. Unfortunately, while they're loud enough for casual usage, they're not loud enough for explosions and loud sounds in movies or gaming.
There is also a picture-in-picture / picture-beside-picture feature that can show two inputs side by side, or one overlaid in a corner of the other. When the inputs are shown side by side their aspect ratio doesn't change, so if two 16:9 inputs are side by side they only occupy a quarter of the screen each.
The monitor also has two ASUS GamePlus features: a crosshair overlay in the center of the screen for games that don't have a crosshair, and a countdown timer overlay that can be placed in a corner of the screen.
We tested the 27" model (PB277Q). The PB278Q is another monitor in the same series, however, it has an IPS panel instead of the TN panel. We expect it to have better picture quality, especially when viewed at an angle, but slightly more motion blur.
If someone comes across a different type of panel or if their PB277Q doesn't correspond to our review, let us know and we will update the review. Note that some tests such as the gray uniformity may vary between individual units.
ASUS also has a range of monitors available in the 'Professional' series, some of which are listed below.
|Model||Size||Resolution||Refresh rate||LCD Type||Notes|
The ASUS PB277Q is a decent 1440p monitor which is great for gaming, however, for other usages, the sub-par picture quality is not ideal and another monitor may be a better choice.
The Dell U2715H is better than the ASUS PB277Q. The U2715H uses an IPS panel, which has much wider viewing angles. The U2715H also has better black uniformity, although it still isn't great, this monitor is a better choice than the PB277Q for dark room viewing. The Dell has a DisplayPort Out port, which makes it very easy to chain multiple monitors together if your computer supports it. The ASUS PB277Q has a higher native refresh rate, so motion looks a bit smoother.
The ASUS PB277Q is a bit better than the Dell U2717D, unless you need wide viewing angles. The ASUS PB277Q uses a TN type panel, which has a higher refresh rate but worse viewing angles. If you are sitting close to the 27" PB277Q, the edges can appear darker or washed out. The PB277Q has much lower input lag than the U2717D, great for gaming or even just browsing the web. The U2717D uses an IPS panel, which isn't as good for late night browsing in a dark room, but has wider viewing angles.
The ASUS PB277Q is a bit better than the ASUS VG248QE. The PB277Q is a larger sized monitor with a higher native resolution, so you can get more done at the same time or better enjoy your games with the larger screen. The PB277Q has a better vertical viewing angle, which is good if you are planning on wall mounting it above eye level. The ASUS VG248QE has a much higher native refresh rate, so motion in games looks smoother if your PC can run it.
The AOC AGON AG271QX is better than the ASUS PB277Q. The AGON AG271QX is a gaming oriented monitor, and has a much higher native refresh rate, so fast motion looks much smoother. The AOC also has better dark room performance with a higher native contrast ratio and better black uniformity. The ASUS PB277Q has better vertical viewing angle, which is good if you are planning on wall mounting it higher than eye level, but has worse horizontal viewing angles, so the edges might appear darker.
The LG 27UD58P-B is a 27" monitor at around the same budget but has an IPS panel and a high pixel density 4k screen. This results in better picture quality, especially when viewed from up close because the sides of the screen remain accurate. The 4k resolution is also great for multi-taskers, or for an office environment. Unfortunately, the motion handling isn't as good due to the higher response time, so if you're a gamer, then go with the ASUS PB277Q. For other uses or for people who care about picture quality then the LG 27UD58P-B is a better choice.
The MSI Optix G27C is a curved VA-type gaming monitor. It has a higher 144Hz refresh rate so fast motion appears smoother and also offers lower input lag, but is limited by a 1080p resolution. It has decent picture quality and blacks look deep in a dark room, but like the PB277Q, it loses accuracy when viewed at an angle. Overall, if you can afford it, the ASUS is a better choice due to the better motion handling and higher 1440p resolution.
The Samsung UE590 is a 4k monitor with a 28" TN panel. It has poor picture quality due to the low peak brightness, poor viewing angles, and bad out-of-the-box color accuracy. The high resolution screen is a bonus though, which makes it easier to multitask or to play games with high detail. It also supports FreeSync, which is good to avoid screen tearing in games. Overall though, the ASUS PB277Q is a better choice due to the higher screen brightness to overcome reflection and the better motion handling.