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Acer Predator X27 Monitor Review

Tested using Methodology v1.1
Updated Apr 09, 2020 at 03:47 pm
Acer Predator X27 Picture
8.1
Mixed Usage
8.2
Office
8.1
Gaming
8.1
Multimedia
8.2
Media Creation
7.4
HDR Gaming
Size 27"
Resolution 3840x2160
Max Refresh Rate
144 Hz
Pixel Type
IPS
Variable Refresh Rate
G-SYNC

The Acer Predator X27 is a very good, versatile monitor that performs best in a bright room. It delivers a great gaming experience overall, with excellent response time and great gaming features, including NVIDIA G-SYNC support, but it has strangely high input lag, which might disappoint serious gamers. Unfortunately, it has poor dark room performance due to its low contrast ratio even with local dimming, and bad black uniformity.

Our Verdict

8.1 Mixed Usage

The Acer Predator X27 is a very good monitor for most uses. It's well-suited for a brighter office setting but has limited ergonomic options. It has some excellent gaming features, like support for NVIDIA's G-SYNC technology, but is limited by the relatively high input lag. It's a great monitor for media creation, thanks to the outstanding color gamut.

Pros
  • Excellent wide color gamut.
  • Excellent HDR brightness.
  • Image remains accurate at an angle.
Cons
  • Performs poorly in a dark room.
8.2 Office

The Acer Predator X27 is a good monitor for office use. It has outstanding text clarity, and the 4k screen is great for multitasking. It has wide viewing angles and decent reflection handling, and it's bright enough for most viewing environments. Unfortunately, it has limited ergonomic options and might be more difficult to place in an ideal position.

8.1 Gaming

This is a great monitor for gaming. The Acer X27 has some excellent gaming features, including support for NVIDIA's G-SYNC technology. Input lag is high compared to most other gaming monitors, which might disappoint serious gamers. Unfortunately, it's not well-suited for late-night gaming in a dark room due to the poor contrast ratio and bad black uniformity.

8.1 Multimedia

The Acer X27 is a very good monitor for watching movies or streaming internet video. The large screen and 4k resolution produce very detailed, crisp images that allow you to see every detail. The wide color gamut and good color volume make sure you see every detail in your videos. Small highlights are very bright in HDR, and the local dimming feature enhances the experience, but there's some haloing around bright highlights in dark scenes.

8.2 Media Creation

The Acer Predator X27 is an impressive monitor for media creation, especially for print and media creation thanks to the complete coverage of the wider Adobe sRGB color space. The high-resolution screen makes it easier to see every detail and get more done.

7.4 HDR Gaming

The Acer Predator X27 delivers the best HDR experience we've seen so far on a monitor, with incredible peak brightness and a great HDR color gamut. Unfortunately, it's a bit limited by its low contrast ratio and bad black uniformity. It also has unusually high input lag for gaming, which might disappoint serious gamers.

  • 8.1 Mixed Usage
  • 8.2 Office
  • 8.1 Gaming
  • 8.1 Multimedia
  • 8.2 Media Creation
  • 7.4 HDR Gaming
  1. Update 8/17/2020: We've retested the SDR and HDR peak brightness, as well as the HDR color gamut and HDR color volume with local dimming enabled.
  2. Update 2/17/2020: Converted to Test Bench 1.1.

Test Results

Design
Design
Style
Curved No
Curve Radius Not Curved
Weight (without stand)
14.3 lbs (6.5 kg)
Weight (with stand)
17.4 lbs (7.9 kg)

The Acer Predator X27 has a simple design. The 'V' shaped stand is thin but wide. The display has thin bezels and comes with blinders to help reduce glare. The stand has a limited range of ergonomics and very little cable management.

Design
Stand
Width
18.7" (47.5 cm)
Depth
11.3" (28.7 cm)

The stand has a very sleek design. The legs are very thin, but they support the monitor well.

6.4
Design
Ergonomics
Height Adjustment
5.1" (13.0 cm)
Switch Portrait/Landscape No
Swivel Range -20° to 20°
Tilt Range -22.5° to 5°

Mediocre ergonomic options. The swivel range is limited compared to similar monitors, like the ASUS ROG PG279Q, and it can't be rotated to portrait orientation.

Design
Back
Wall Mount VESA 100x100

The back is clean, but not much thought was given to cable management. The Acer X27 can be VESA mounted, but it requires a special adapter that is included in the box. There's a fan on the back of the monitor to help with heat dissipation. It's always running, but is extremely quiet.

Design
Borders
Borders
0.6" (1.5 cm)

The borders, as measured without the side blinders installed, are thin on three sides. They look nearly identical to the Acer Predator XB273K.

Design
Thickness
Thickness (with stand)
10.0" (25.4 cm)
Thickness (without stand)
3.1" (7.9 cm)

With the stand, the Acer X27 is very thick and can't be easily placed against a wall. Without the stand, it's still thick but won't stick out too much when wall mounted.

8.0
Design
Build Quality

Great build quality with no major issues. There's a slight gap between the front and back covers, but this shouldn't cause any issues.

Picture Quality
5.9
Picture Quality
Contrast
Native Contrast
815 : 1
Contrast With Local Dimming
1339 : 1

Like most IPS monitors, the native contrast ratio is low, resulting in blacks that look gray in a dark room. The local dimming feature is effective at boosting the contrast ratio, but it still falls short of VA monitor.

4.5
Picture Quality
Local Dimming
Local Dimming
Yes
Backlight
Full-Array

The monitor has a Backlight Response setting with three options: 'Gaming', 'Desktop' and 'Hybrid'. 'Gaming' makes the local dimming react almost instantly when the monitor's screen changes; 'Desktop' makes the monitor react to changes with a very slow fade (~5 seconds), and prioritizes maintaining bright parts of the screen rather than making adjacent dark areas darker; this makes the local dimming less distracting for desktop use. 'Hybrid' is a blend of the 'Gaming' and 'Desktop' behaviors. We recommend setting Backlight Response to 'Gaming' to start, then if you find the local dimming distracting you can select 'Hybrid', then 'Desktop' as needed.

Local dimming is available in SDR as well as HDR. In SDR, the SDR Variable Backlight option must be enabled. In SDR the peak brightness is limited to 300 cd/m², so the impact of local dimming is less noticeable.

7.2
Picture Quality
SDR Peak Brightness
SDR Real Scene
251 cd/m²
SDR Peak 2% Window
326 cd/m²
SDR Peak 10% Window
324 cd/m²
SDR Peak 25% Window
324 cd/m²
SDR Peak 50% Window
323 cd/m²
SDR Peak 100% Window
324 cd/m²
SDR Sustained 2% Window
326 cd/m²
SDR Sustained 10% Window
324 cd/m²
SDR Sustained 25% Window
324 cd/m²
SDR Sustained 50% Window
323 cd/m²
SDR Sustained 100% Window
324 cd/m²
SDR ABL
0.001

Update 08/17/2020: We've retested the SDR peak brightness to ensure that it's measured with local dimming enabled, as per our methodology. The results are slightly higher than what we had originally measured, an increase of roughly 25 cd/m². The score has been adjusted accordingly. We also retested 7 other monitors, and some results changed.

Decent peak brightness with SDR content. There's very little fluctuation in brightness with different content. The Acer X27 is bright enough for most rooms but may have difficulty overcoming glare in a brightly lit room.

9.1
Picture Quality
HDR Peak Brightness
HDR Real Scene
1312 cd/m²
HDR Peak 2% Window
1202 cd/m²
HDR Peak 10% Window
1265 cd/m²
HDR Peak 25% Window
978 cd/m²
HDR Peak 50% Window
804 cd/m²
HDR Peak 100% Window
728 cd/m²
HDR Sustained 2% Window
1074 cd/m²
HDR Sustained 10% Window
1068 cd/m²
HDR Sustained 25% Window
957 cd/m²
HDR Sustained 50% Window
797 cd/m²
HDR Sustained 100% Window
716 cd/m²
HDR ABL
0.024

Update 08/17/2020: We've retested the HDR peak brightness to ensure that it's measured with local dimming enabled, as per our methodology. The results have changed significantly, but not all in the same direction, as it depends on the content. The HDR real scene value increased from 1127 cd/m² to 1312 cd/m². The score has been adjusted accordingly. We also retested 7 other monitors, and some results changed.

Outstanding peak brightness in HDR, better even than most TVs. Small highlights in games stand out, but there's some noticeable haloing around bright objects in dark scenes.

7.8
Picture Quality
Horizontal Viewing Angle
Color Washout From Left
40 °
Color Washout From Right
40 °
Color Shift From Left
67 °
Color Shift From Right
64 °
Brightness Loss From Left
50 °
Brightness Loss From Right
47 °
Black Level Raise From Left
30 °
Black Level Raise From Right
70 °
Gamma Shift From Left
40 °
Gamma Shift From Right
43 °

Very good horizontal viewing angles. The sides of the screen remain uniform even when sitting up close.

8.5
Picture Quality
Vertical Viewing Angle
Color Washout From Below
36 °
Color Washout From Above
35 °
Color Shift From Below
70 °
Color Shift From Above
70 °
Brightness Loss From Below
38 °
Brightness Loss From Above
36 °
Black Level Raise From Below
70 °
Black Level Raise From Above
70 °
Gamma Shift From Below
69 °
Gamma Shift From Above
68 °

Like most IPS monitors, this monitor has excellent vertical viewing angles.

8.8
Picture Quality
Gray Uniformity
50% Std. Dev.
2.887 %
50% DSE
0.102 %
5% Std. Dev.
0.413 %
5% DSE
0.061 %

Excellent gray uniformity. There's very little dirty screen effect and almost no visible banding. The corners of the screen are slightly darker than the rest, which can be noticeable when browsing the web in a dark room, but this shouldn't be a problem for most people. In near-dark scenes, there are no noticeable issues with the gray uniformity.

4.0
Picture Quality
Black Uniformity
Native Std. Dev.
3.046 %
Std. Dev. w/ L.D.
4.982 %

The Acer Predator X27 has bad black uniformity. There's severe clouding throughout the screen, and the backlight is bleeding through in a few spots along the bottom edge. With local dimming enabled, the darker areas of the screen are dimmed properly, but there's significant clouding around the test cross due to the size of the dimming zones.

5.9
Picture Quality
Pre Calibration
Picture Mode
Standard
Luminance
276 cd/m²
Luminance Settings
240
Contrast Setting
50
RGB Controls
50-50-50
Gamma Setting
Default
Color Temperature
6042 K
White Balance dE
5.16
Color dE
3.46
Gamma
2.18

Disappointing accuracy out of the box. The white balance is far from our target, giving whites a yellow tint, and there are some noticeable inaccuracies in certain colors. On the other hand, the gamma follows the sRGB target curve nearly perfectly, so most scenes are displayed at the correct brightness levels.

9.6
Picture Quality
Post Calibration
Picture Mode
User
Luminance
100 cd/m²
Luminance Settings
98
Contrast Setting
50
RGB Controls
39-37-50
Gamma Setting
Default
Color Temperature
6497 K
White Balance dE
0.51
Color dE
0.54
Gamma
2.18

Calibration was able to effectively eliminate all color inaccuracies. The Acer Predator X27 still tracks our gamma curve nearly perfectly. White and color balance is nearly perfect and most people won't be able to see any errors. The color temperature after calibration is nearly perfect for our target of 6500 K.

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.

9.7
Picture Quality
SDR Color Gamut
sRGB xy
95.5 %
Adobe RGB xy
98.1 %
sRGB Picture Mode
User (SDR Colors sRGB = On)
Adobe RGB Picture Mode
User (SDR Colors sRGB = Off)

The Acer Predator X27 has an outstanding SDR color gamut. It can essentially display the entire sRGB and Adobe RGB color space, making it a great choice for professional photo and video editing.

9.8
Picture Quality
SDR Color Volume
sRGB In ICtCp
97.4 %
Adobe RGB In ICtCp
99.2 %
sRGB Picture Mode
User (SDR Colors sRGB = On)
Adobe RGB Picture Mode
User (SDR Colors sRGB = Off)

Outstanding SDR color volume. It can display almost the entire volume, but can't produce dark, saturated colors very well, due to the low contrast ratio.

8.0
Picture Quality
HDR Color Gamut
Wide Color Gamut
Yes
DCI P3 xy
77.0 %
Rec. 2020 xy
82.6 %
DCI P3 Picture Mode
User (SDR Colors sRGB = Off)
Rec. 2020 Picture Mode
User (SDR Colors sRGB = Off)

Update 08/17/2020: We've retested the HDR color gamut to ensure that it's measured with local dimming enabled, as per our methodology. The DCI P3 coverage has decreased from 85.8% to 77.0%; however, it tracks the color space better. The Rec. 2020 coverage has increased from 78.2% to 82.6%. The score has been adjusted accordingly. We also retested 7 other monitors, and some results changed.

This monitor has a great HDR color gamut. It has excellent coverage of the DCI P3 color space used by most of today's HDR content. It also has very good coverage of the wider Rec. 2020 space, better than most TVs even.

7.7
Picture Quality
HDR Color Volume
DCI-P3 In ICtCp
73.3 %
Rec. 2020 In ICtCp
80.3 %
DCI P3 Picture Mode
User (SDR Colors sRGB = Off)
Rec. 2020 Picture Mode
User (SDR Colors sRGB = Off)

Update 08/17/2020: We've retested the HDR color volume to ensure that it's measured with local dimming enabled, as per our methodology. The P3 color volume has decreased from 80.8% to 73.3%, while the Rec. 2020 color volume has increased from 73% to 80.3%. The score has been adjusted accordingly. We also retested 7 other monitors, and some results changed.

Very good HDR color volume, but it can't produce colors that are as bright as pure white, and due to the low contrast ratio it can't display dark saturated colors very well. The newer Acer Predator XB273K has slightly better volume in DCI P3.

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 %

There are no signs of temporary image retention.

9.8
Picture Quality
Gradient
Color Depth
10 Bit

Excellent gradient handling on the Acer Predator X27. Gradients are displayed nearly perfectly without banding.

10
Picture Quality
Color Bleed
Pixel Row Error
0.000 %
Pixel Column Error
0.001 %

There's no color bleed on the Acer Predator X27.

7.3
Picture Quality
Reflections
Screen Finish
Matte
Total Reflections
5.7 %
Indirect Reflections
3.1 %
Calculated Direct Reflections
2.6 %

Decent reflection handling, but it doesn't diffuse reflections across the screen very well. The included blinders can help to reduce glare from side sources.

9.5
Picture Quality
Text Clarity
Sub-Pixel Layout
RGB

The Acer Predator X27 has outstanding text clarity out of the box (bottom picture). It's not necessary to run the ClearType settings for clear text on a PC, but if you do, text is incredibly clear (top).

Motion
8.5
Motion
Response Time @ Max Refresh Rate
Best Overdrive Setting
Off
Rise / Fall Time
6.9 ms
Total Response Time
12.2 ms
Overshoot Error
0.0 %
Dark Rise / Fall Time
7.2 ms
Dark Total Response Time
12.7 ms
Dark Overshoot Error
0.0 %

Overdrive Setting Response Time Chart Motion Blur Photo Response Time Table
Off Chart Photo Tables
Normal Chart Photo Tables
Extreme Chart Photo Tables

The Acer Predator X27 has an excellent response time at the max refresh rate. The 'Off' overdrive setting delivers the best overall results, with a short blur trail behind fast-moving objects and no overshoot. 'Normal' is quite a bit faster, but there's significant overshoot. If you prefer something with a much quicker response time, then check out the LG 27GN950-B.

9.0
Motion
Response Time @ 60Hz
Best Overdrive Setting
Normal
Rise / Fall Time
5.5 ms
Total Response Time
9.6 ms
Overshoot Error
.8 %
Dark Rise / Fall Time
6.1 ms
Dark Total Response Time
11.6 ms
Dark Overshoot Error
0.0 %

Response Time Chart Response Time Table Motion Blur Photo
Off Off Off
Normal Normal Normal
Extreme Extreme Extreme

When gaming at 60Hz, the response time of this monitor is outstanding with the 'Normal' overdrive setting. There's very little blur behind fast-moving objects, and no noticeable overshoot at all.

10
Motion
Image Flicker
Flicker-Free Yes
PWM Dimming Frequency
0 Hz

The Acer Predator X27 is completely flicker-free.

0
Motion
Black Frame Insertion (BFI)
Black Frame Insertion (BFI)
No BFI
BFI Maximum Frequency
N/A
BFI Minimum Frequency
N/A

Unlike many G-SYNC monitors, the Acer Predator X27 doesn't have an optional Black Frame Insertion feature.

9.0
Motion
Refresh Rate
Native
120 Hz
Max Refresh Rate
144 Hz
Variable Refresh Rate
Yes
FreeSync
No
G-SYNC
Yes (Native)
VRR Maximum
144 Hz
VRR Minimum
< 20 Hz
VRR Supported Connectors DisplayPort

This is one of the only 4k, high refresh rate monitors on the market. The maximum refresh rate is only available with chroma subsampling or a lower color depth.

Inputs
8.4
Inputs
Input Lag
Native Resolution
10.9 ms
Native Resolution @ 60Hz
20.3 ms
Variable Refresh Rate
14.5 ms
Variable Refresh Rate @ 60Hz
22.6 ms
10 Bit HDR
12.7 ms
Black Frame Insertion (BFI)
N/A

The Acer Predator X27 has more input lag than usual for a 144Hz monitor. Although it's great overall, it may disappoint more serious gamers.

9.2
Inputs
Resolution And Size
Native Resolution 3840 x 2160
Aspect Ratio 16:9
Megapixels 8.3 MP
Pixel Density