ASUS ROG Strix XG27UQ Monitor Review

Tested using Methodology v1.1
Reviewed Dec 03, 2020 at 10:40 am
ASUS ROG Strix XG27UQ Picture
8.3
Mixed Usage
8.2
Office
8.6
Gaming
8.1
Multimedia
8.4
Media Creation
7.5
HDR Gaming
Size 27"
Resolution 3840x2160
Max Refresh Rate
144 Hz
Pixel Type
IPS
Variable Refresh Rate
Adaptive Sync

The ASUS ROG Strix XG27UQ is an excellent 4k gaming monitor. Its large 27 inch screen displays razor-sharp images and text, and it has good ergonomics and decent viewing angles, making it suitable for a wide range of uses. It has a fast response time, low input lag, and a 144Hz refresh rate, resulting in smooth motion and incredible responsiveness. However, it requires a graphics card with Display Stream Compression and a DisplayPort connection to achieve such a high refresh rate since it lacks an HDMI 2.1 port. It supports Adaptive Sync and is compatible with FreeSync and G-SYNC. Its IPS panel has decent reflection handling and gets bright enough to combat intense glare. It isn't as well-suited for dark rooms, though, as its low contrast ratio makes blacks look grayish. It has a good wide color gamut and gets decently bright in HDR, but the local dimming is terrible and can be quite distracting.

Our Verdict

8.3 Mixed Usage

The ASUS ROG Strix XG27UQ is a great monitor overall. It has a large 4k screen that makes it suitable for work, gaming, or media consumption. Gaming feels responsive due to its low input lag and high refresh rate, and it has a fast response time and a Black Frame Insertion feature to deliver clear images. It has an outstanding SDR color gamut for viewing and creating content, but the contrast ratio is low, resulting in blacks that look gray in the dark.

Pros
  • Large screen and 4k resolution.
  • Good visibility in bright rooms.
  • Good ergonomics.
Cons
  • Mediocre contrast ratio.
  • Images look washed out when viewed from the side.
8.2 Office

The ASUS ROG Strix XG27UQ is great for office use. It has a large screen for multitasking, and its high pixel density results in outstanding text clarity. Its decent viewing angles make it easier to share your work with colleagues, but the image looks a bit washed out from the side and might not be ideal if image accuracy is a must. Luckily, it has good ergonomics. It handles reflections decently well and gets more than bright enough to overcome glare.

Pros
  • Large screen and 4k resolution.
  • Good visibility in bright rooms.
  • Good ergonomics.
Cons
  • Mediocre contrast ratio.
  • Images look washed out when viewed from the side.
8.6 Gaming

The ASUS ROG Strix XG27UQ is an excellent gaming monitor. It has a low input lag, fast response time, and a 144Hz refresh rate, resulting in smooth and responsive gameplay. It has a Black Frame Insertion feature to improve motion clarity, which you can use simultaneously with variable refresh rate. Its large high-resolution screen provides incredible immersion, making it a great choice for playing atmospheric games like RPGs. Sadly, it isn't the best option for gaming in the dark due to its low contrast and mediocre black uniformity.

Pros
  • Large screen and 4k resolution.
  • 144Hz refresh rate.
  • Outstanding response time.
  • Good ergonomics.
Cons
  • Mediocre contrast ratio.
  • Requires graphics card with DSC for 144Hz.
8.1 Multimedia

The ASUS ROG Strix XG27UQ is great for media consumption. It has a large high-resolution screen that delivers stunning picture quality. It allows for a good amount of ergonomic adjustments so that you can place the screen at your optimal viewing position, and its decent viewing angles make it easier to share content with others. It isn't the best option for dark room viewing as its low contrast ratio makes blacks look gray.

Pros
  • Large screen and 4k resolution.
  • Good visibility in bright rooms.
  • Good ergonomics.
  • Outstanding SDR color gamut.
Cons
  • Mediocre contrast ratio.
  • Images look washed out when viewed from the side.
8.4 Media Creation

The ASUS ROG Strix XG27UQ is great for media creation. It has a large 4k screen that allows you to see all the fine details in your work with amazing clarity. It has an outstanding SDR color gamut with full sRGB coverage, making it suitable for color work. Unfortunately, it doesn't display dark colors well due to its low contrast ratio, and even though it has decent viewing angles, images look washed out from the side.

Pros
  • Large screen and 4k resolution.
  • Good visibility in bright rooms.
  • Good ergonomics.
  • Outstanding SDR color gamut.
Cons
  • Mediocre contrast ratio.
  • Images look washed out when viewed from the side.
7.5 HDR Gaming

The ASUS ROG Strix XG27UQ is good for gaming in HDR. It provides a smooth and responsive gaming experience thanks to its low input lag, fast response time, and high refresh rate. It has a good HDR color gamut and decent peak brightness, but its low contrast ratio makes blacks look gray, and the local dimming feature is terrible.

Pros
  • Large screen and 4k resolution.
  • 144Hz refresh rate.
  • Outstanding response time.
  • Good ergonomics.
Cons
  • Mediocre contrast ratio.
  • Requires graphics card with DSC for 144Hz.
  • Terrible local dimming.
  • 8.3 Mixed Usage
  • 8.2 Office
  • 8.6 Gaming
  • 8.1 Multimedia
  • 8.4 Media Creation
  • 7.5 HDR Gaming

Test Results

perceptual testing image
Design
Design
Style
Curved No
Curve Radius Not Curved
Weight (without stand)
9.7 lbs (4.4 kg)
Weight (with stand)
16.5 lbs (7.5 kg)

The ASUS ROG Strix XG27UQ's design is almost identical to the ASUS ROG Strix XG279Q but with thick borders on all four sides. It has a tripod-style stand with an LED light that shines onto the desk, which you can customize with the included acrylic covers to show the ROG logo. There's a larger ROG logo on the back that also lights up. You can control the color and lighting effects of both lighting zones with ASUS' Aura Sync software.

Design
Stand
Width
20.3" (51.5 cm)
Depth
10.6" (27.0 cm)

The tripod-style stand doesn't take up a whole lot of desk space because the feet are relatively thin. It supports the monitor well and doesn't wobble.

7.9
Design
Ergonomics
Height Adjustment
4.7" (12.0 cm)
Switch Portrait/Landscape Yes, Clockwise
Swivel Range -40° to 40°
Tilt Range -20° to 5°

The ASUS XG27UQ has good ergonomics. It allows for all manner of adjustments, making it easier to adjust the screen to your ideal viewing position or share content.

Design
Back
Wall Mount VESA 100x100

The back looks exactly like the ASUS ROG Strix XG279Q as it has the same etchings and ROG logo. There's a small cutout at the bottom of the stand for cable management. There's no quick-release feature to remove the stand for VESA-mounting.

Design
Borders
Borders
0.7" (1.8 cm)

The borders are thick and may be distracting to some.

Design
Thickness
Thickness (with stand)
10.6" (27.0 cm)
Thickness (without stand)
3.9" (10.0 cm)

Both the stand and monitor are thick, so you need a deep desk to put it on.

8.0
Design
Build Quality

The ASUS XG27UQ's build quality is great. The stand's feet are metal while the column is plastic. It's very heavy and doesn't wobble. The back is also made of sturdy plastic, and the adjustment hinges are of good quality, although the plastic covering them feels a bit flimsy. There aren't any loose parts or obvious gaps in the construction, and most people shouldn't have any issues with it.

Picture Quality
6.3
Picture Quality
Contrast
Native Contrast
1232 : 1
Contrast With Local Dimming
1211 : 1

The ASUS XG27UQ has a mediocre contrast ratio, resulting in blacks that look grayish when viewed in a dark room. It's slightly higher than the advertised 1000:1; however, contrast can vary between individual units. The local dimming feature doesn't improve the black level at all, and enabling it locks the screen's brightness to max automatically.

1.0
Picture Quality
Local Dimming
Local Dimming
Yes
Backlight
Edge

The ASUS ROG Strix XG27UQ has a terrible local dimming feature. It's called Dynamic Dimming in the on-screen settings menu. It's edge-lit, and there are eight vertical lighting zones. Zone transition is relatively fast but not smooth, so it's very visible. However, it isn't noticeable with small objects, as it seems like it requires an object of a certain size to trigger the local dimming. There's no black crush because the black level is raised when a zone lights up. There's a lot of blooming due to the large vertical zones, but blooming around subtitles isn't really noticeable in regular content since most of the zones are on all the time. It can be distracting in dark scenes when only a few zones are lit, as the difference in contrast between the zones that are on and those that are off is very drastic.

8.4
Picture Quality
SDR Peak Brightness
SDR Real Scene
449 cd/m²
SDR Peak 2% Window
467 cd/m²
SDR Peak 10% Window
470 cd/m²
SDR Peak 25% Window
470 cd/m²
SDR Peak 50% Window
470 cd/m²
SDR Peak 100% Window
470 cd/m²
SDR Sustained 2% Window
467 cd/m²
SDR Sustained 10% Window
470 cd/m²
SDR Sustained 25% Window
470 cd/m²
SDR Sustained 50% Window
470 cd/m²
SDR Sustained 100% Window
470 cd/m²
SDR ABL
0.000

The ASUS XG27UQ has great SDR peak brightness. It's remarkably consistent across different content, and it's more than enough to overcome glare.

We measured the SDR peak brightness after calibration in the 'User' Picture Mode, with Brightness set to max.

7.2
Picture Quality
HDR Peak Brightness
HDR Real Scene
472 cd/m²
HDR Peak 2% Window
498 cd/m²
HDR Peak 10% Window
544 cd/m²
HDR Peak 25% Window
544 cd/m²
HDR Peak 50% Window
549 cd/m²
HDR Peak 100% Window
550 cd/m²
HDR Sustained 2% Window
496 cd/m²
HDR Sustained 10% Window
542 cd/m²
HDR Sustained 25% Window
543 cd/m²
HDR Sustained 50% Window
548 cd/m²
HDR Sustained 100% Window
549 cd/m²
HDR ABL
0.006

Decent HDR peak brightness. It's higher than the advertised 400 cd/m² and meets its DisplayHDR 400 certification requirement. It's very consistent when displaying different content, but unlike in SDR, there's a bit of dimming in the 2% window, so small highlights in dark scenes don't pop as much. It can make some highlights stand out, although it's more noticeable in a dark room than in a bright one.

We measured the HDR peak brightness in the 'ASUS Gaming HDR' Picture Mode.

7.3
Picture Quality
Horizontal Viewing Angle
Color Washout From Left
29 °
Color Washout From Right
32 °
Color Shift From Left
51 °
Color Shift From Right
55 °
Brightness Loss From Left
35 °
Brightness Loss From Right
38 °
Black Level Raise From Left
70 °
Black Level Raise From Right
70 °
Gamma Shift From Left
33 °
Gamma Shift From Right
34 °

Although the ASUS ROG Strix XG27UQ has an IPS panel, its horizontal viewing angles are only decent. Colors look washed out fairly early as you move off-center, followed by gamma shift. It should be fine for sharing content casually or co-op gaming, but not if you require image accuracy.

7.3
Picture Quality
Vertical Viewing Angle
Color Washout From Below
31 °
Color Washout From Above
30 °
Color Shift From Below
62 °
Color Shift From Above
50 °
Brightness Loss From Below
33 °
Brightness Loss From Above
32 °
Black Level Raise From Below
70 °
Black Level Raise From Above
70 °
Gamma Shift From Below
40 °
Gamma Shift From Above
38 °

The vertical viewing angles are decent. Images look a bit washed out if you mount the monitor above eye level.

8.5
Picture Quality
Gray Uniformity
50% Std. Dev.
4.559 %
50% DSE
0.088 %
5% Std. Dev.
0.383 %
5% DSE
0.042 %

Our ASUS ROG Strix XG27UQ has excellent gray uniformity; however, this can vary between units. The sides appear darker, especially at the top corners, but there's almost no dirty screen effect. Uniformity is much better in dark scenes.

6.4
Picture Quality
Black Uniformity
Native Std. Dev.
1.700 %
Std. Dev. w/ L.D.
1.829 %

Black uniformity is mediocre, but this can vary between units. Without local dimming, the screen looks blue, and there's clouding throughout. It looks almost identical with local dimming enabled, except that the whole screen looks a bit more gray.

8.1
Picture Quality
Pre Calibration
Picture Mode
sRGB
Luminance
157 cd/m²
Luminance Settings
90
Contrast Setting
80
RGB Controls
100-100-100
Gamma Setting
2.2
Color Temperature
6458 K
White Balance dE
2.99
Color dE
1.70
Gamma
2.19

The ASUS ROG Strix XG27UQ has great accuracy out of the box. Most color inaccuracies shouldn't be visible to the naked eye, but white balance is a bit off. The color temperature is very close to our 6500k, and gamma follows the sRGB curve well, although dark and bright scenes are slightly over-brightened. Note that accuracy can vary between individual units.

9.4
Picture Quality
Post Calibration
Picture Mode
User
Luminance
102 cd/m²
Luminance Settings
15
Contrast Setting
80
RGB Controls
80-100-96
Gamma Setting
2.2
Color Temperature
6446 K
White Balance dE
0.95
Color dE
0.60
Gamma
2.18

The ASUS ROG Strix XG27UQ's accuracy is exceptional after calibration. White balance is much improved, and color accuracy is also slightly better. The color temperature is still within the same ballpark. Gamma hasn't changed much, except that bright scenes are brighter than before calibration.

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 due to manufacturing tolerances, even for the same model.

9.2
Picture Quality
SDR Color Gamut
sRGB xy
99.4 %
Adobe RGB xy
85.0 %
sRGB Picture Mode
User
Adobe RGB Picture Mode
User

The ASUS ROG Strix XG27UQ has an outstanding SDR color gamut. It covers the commonly-used sRGB color space entirely, and it has great coverage of the Adobe RGB color space used mostly in photo editing.

9.3
Picture Quality
SDR Color Volume
sRGB In ICtCp
96.9 %
Adobe RGB In ICtCp
88.3 %
sRGB Picture Mode
User
Adobe RGB Picture Mode
User

The ASUS ROG Strix XG27UQ has an exceptional SDR color volume. It only has trouble displaying dark colors due to its low contrast ratio.

7.9
Picture Quality
HDR Color Gamut
Wide Color Gamut
Yes
DCI P3 xy
88.1 %
Rec. 2020 xy
70.5 %
DCI P3 Picture Mode
Asus Gaming HDR
Rec. 2020 Picture Mode
Asus Gaming HDR

The ASUS ROG Strix XG27UQ has a good HDR color gamut. It has excellent coverage of the DCI P3 color space used in most content and decent coverage of the wider Rec. 2020.

Our measurement of the DCI P3 coverage is slightly lower than the advertised 90% coverage due to how we measure it. We measure it by sending a Rec. 2020 signal, but unlike most reviewers, we limit the colors to the DCI P3 primaries. This results in a lower but arguably more accurate measurement.

7.9
Picture Quality
HDR Color Volume
DCI-P3 In ICtCp
86.1 %
Rec. 2020 In ICtCp
72.4 %
DCI P3 Picture Mode
Asus Gaming HDR
Rec. 2020 Picture Mode
Asus Gaming HDR

Good HDR color volume. It doesn't display dark and saturated colors well due to its low contrast ratio, and it also has difficulty with very bright colors.

10
Picture Quality
Image Retention
IR After 0 Min Recovery
0.00 %
IR After 2 Min Recovery
0.00 %
IR After 4 Min Recovery
0.00 %
IR After 6 Min Recovery
0.00 %
IR After 8 Min Recovery
0.00 %
IR After 10 Min Recovery
0.00 %

The ASUS ROG Strix XG27UQ doesn't exhibit any signs of image retention; however, this can vary between units.

9.9
Picture Quality
Gradient
Color Depth
10 Bit

The ASUS ROG Strix XG27UQ has superb gradient handling. You shouldn't see any banding in most content.

10
Picture Quality
Color Bleed
Pixel Row Error
0.000 %
Pixel Column Error
0.007 %

There's no color bleed on the ASUS XG27UQ.

7.0
Picture Quality
Reflections
Screen Finish
Matte
Total Reflections
6.3 %
Indirect Reflections
3.7 %
Calculated Direct Reflections
2.6 %

The ASUS XG27UQ has decent reflection handling. The reflections can be a bit distracting in well-lit rooms, but you shouldn't have any visibility issues due to the monitor's high peak brightness.

9.0
Picture Quality
Text Clarity
Sub-Pixel Layout
RGB

The ASUS XG27UQ has outstanding text clarity due to its high pixel density. Enabling Windows ClearType makes text look bolder, but it might not be necessary for some people.

Motion
9.0
Motion
Response Time @ Max Refresh Rate
Best Overdrive Setting
Level 3
Rise / Fall Time
5.3 ms
Total Response Time
10.1 ms
Overshoot Error
1.0 %
Dark Rise / Fall Time
5.4 ms
Dark Total Response Time
10.2 ms
Dark Overshoot Error
0.1 %

Overdrive Setting Response Time Chart Response Time Tables Motion Blur Photo
Level 0 Chart Table Photo
Level 1 Chart Table Photo
Level 2 Chart Table Photo
Level 3 Chart Table Photo
Level 4 Chart Table Photo
Level 5 Chart Table Photo

The ASUS ROG Strix XG27UQ has outstanding response time at its max refresh rate, resulting in only a short blur trail behind fast-moving objects. The best overdrive setting is 'Level 3' as it provides the best performance without causing too much overshoot like the 'Level 4' and 'Level 5' options.

8.4
Motion
Response Time @ 60Hz
Best Overdrive Setting
Level 1
Rise / Fall Time
6.9 ms
Total Response Time
13.0 ms
Overshoot Error
0.2 %
Dark Rise / Fall Time
7.3 ms
Dark Total Response Time
12.1 ms
Dark Overshoot Error
0.9 %

Overdrive Setting Response Time Chart Response Time Tables Motion Blur Photo
Level 0 Chart Table Photo
Level 1 Chart Table Photo
Level 2 Chart Table Photo
Level 3 Chart Table Photo
Level 4 Chart Table Photo
Level 5 Chart Table Photo

The ASUS XG27UQ's response time at 60Hz is great. The best overdrive setting is 'Level 1' because the higher settings have worse response times and add a lot of overshoot. This means you may have to change the overdrive setting if your game's frame rate drops to 60fps.

10
Motion
Image Flicker
Flicker-Free Yes
PWM Dimming Frequency
>1000 Hz

The backlight is flicker-free when it's at max. It flickers at lower backlight levels, but the frequency is so high that it isn't visible to most people. This helps minimize image duplication and reduce eye strain.

7.0
Motion
Black Frame Insertion (BFI)
Black Frame Insertion (BFI)
Yes
BFI Maximum Frequency
144 Hz
BFI Minimum Frequency
100 Hz

The ASUS XG27UQ has an optional Black Frame Insertion feature to help improve image clarity called ELMB. It can be enabled while VRR is active, and it locks the Brightness setting to max to compensate, as BFI tends to dim the image noticeably. Unfortunately, it also causes visible image duplication.

9.0
Motion
Refresh Rate
Native
144 Hz
Max Refresh Rate
144 Hz
Variable Refresh Rate
Yes
FreeSync
Compatible (Tested)
G-SYNC
Compatible (Tested)
VRR Maximum
144 Hz
VRR Minimum
< 20 Hz
VRR Supported Connectors DisplayPort, HDMI

The ASUS ROG Strix XG27UQ has a high refresh rate that results in a more fluid and responsive gaming experience. However, you can only achieve the full 144Hz with a graphics card that supports Display Stream Compression and over a DisplayPort connection since it lacks an HDMI 2.1 port. It supports Adaptive Sync to reduce screen tearing, and it's compatible with both FreeSync and G-SYNC. G-SYNC only works over a DisplayPort connection, and FreeSync's range is 20-120Hz over DisplayPort and 20-60Hz over HDMI.

Inputs
9.5
Inputs
Input Lag
Native Resolution
4.1 ms
Native Resolution @ 60Hz
8.8 ms
Variable Refresh Rate
N/A
Variable Refresh Rate @ 60Hz