Acer Predator XB273K Monitor Review

Tested using Methodology v1.1
Updated Aug 16, 2019 at 08:22 am
Acer Predator XB273K Picture
8.0
Mixed Usage
8.0
Office
8.2
Gaming
7.9
Multimedia
8.0
Media Creation
6.9
HDR Gaming
Size 27"
Resolution 3840x2160
Max Refresh Rate
144 Hz
Pixel Type
IPS
Variable Refresh Rate
G-SYNC

The Acer Predator XB273K is a good monitor with decent picture quality that has great gaming performance. It has an excellent 4k resolution screen that displays every little detail of your game, a very low input lag, supports G-SYNC, and has a very fast response time that delivers crisp motion. It can display a wide color gamut and can get fairly bright in SDR, which is good for a bright room. HDR brightness is decent for playing games, but not so good for watching HDR movies. Unfortunately, the monitor has an IPS panel; this hurts dark room performance as blacks look like gray. Furthermore, the viewing angles on our unit weren't as good as on other IPS monitors, although still better than most VA panel monitors.

Our Verdict

8.0 Mixed Usage

The Predator XB273K is a good monitor for mixed usage. It has a 4k resolution that displays great detail, favoring multitasking. The input lag is very low and the monitor feels very responsive and supports G-SYNC to please gamers. Unfortunately, the contrast ratio is low and dark room performance is hurt. It can get fairly bright in SDR and its HDR brightness is decent, but can't make bright highlights show off in HDR movies.

Pros
  • Very low input lag, great for gaming.
  • Excellent 4k resolution.
Cons
  • Low contrast ratio and bad black uniformity.
8.0 Office

This is a good monitor for office use. The 4k resolution and 27" screen allow you to easily multitask. The viewing angles are not as great as other IPS monitors but nonetheless, you can share your work with your colleagues without issue. It has good gray uniformity, which is great for web browsing and decent ergonomics and won't trouble you to place it comfortably.

8.2 Gaming

This is a great monitor for playing games. It has a very low input lag and is very responsive, great for even competitive gamers. It supports G-SYNC for nearly tear-free gaming, but unfortunately, the input lag is higher at 60Hz and this might disappoint those with consoles. The response time is very fast and motion looks crisp without much motion blur behind fast-moving content, and the 4k resolution can display more details of your gaming arena.

7.9 Multimedia

This is a good monitor for consuming multimedia. It has an impressive 4k resolution that can display 4k movies at their native format, but unfortunately, the low contrast doesn't favor dark room viewing. The viewing angles are good for watching from the side although other IPS monitors perform better. It has a low input lag, decent reflection handling, and can get fairly bright for a bright room, which is where the monitor performs best.

8.0 Media Creation

The Predator XB273K is a good monitor for media creation. It has a good size screen with excellent resolution, so you can put more of your work on it. It has decent ergonomics and, although the viewing angles are not as good as other IPS monitors, you can still share your screen with clients or colleagues.

6.9 HDR Gaming

The XB273K is a decent monitor for HDR gaming. It's limited by the low contrast and bad black uniformity, but it gets decently bright in HDR. It supports G-SYNC for nearly tear-free gaming and has a very low input lag that makes it very responsive. Finally, the 4k resolution will display more of your game on your screen.

  • 8.0 Mixed Usage
  • 8.0 Office
  • 8.2 Gaming
  • 7.9 Multimedia
  • 8.0 Media Creation
  • 6.9 HDR Gaming
  1. Update 7/22/2020: Converted to Test Bench 1.1.

Test Results

perceptual testing image
Design
Design
Style
Curved No
Curve Radius Not Curved
Weight (without stand)
12.8 lbs (5.8 kg)
Weight (with stand)
16.3 lbs (7.4 kg)
Design
Stand
Width
21.1" (53.6 cm)
Depth
12.2" (31.0 cm)

The stand of the Acer Predator XB273K is wide and supports the monitor well. The legs are thin and give you space to put small things in front of the monitor.

6.5
Design
Ergonomics
Height Adjustment
5.4" (13.7 cm)
Switch Portrait/Landscape No
Swivel Range -20° to 20°
Tilt Range -22.5° to 5°

The ergonomics of the Predator XB3 are mediocre. It has good height adjustment and excellent tilt range, and with a little effort you'll be able to place it in a comfortable position.

Design
Back
Wall Mount VESA 100x100

The back is plain and made of plastic. The hole at the bottom of the stand pole serves for cable management and there is a plastic cover to hide the inputs. Also, near the top of the stand pole, there is a small plastic clip that opens when you click it, so it can hold your headphones.

There's also a fan, similar to the Acer Predator X27, on the back of the monitor that helps with heat dissipation. It's always running, but is extremely quiet.

Design
Borders
Borders
0.6" (1.5 cm)

The borders on the Acer XB273K have an average thickness and there is no gap between the borders and the screen. The borders were measured without the blinder screens.

Design
Thickness
Thickness (with stand)
7.5" (19.1 cm)
Thickness (without stand)
3.2" (8.1 cm)

When the monitor is placed on its stand, it's quite thick and can't be placed close to a wall. If you VESA mount it, it won't protrude much. The height adjustment is on an angle, so the actual thickness varies depending on the height. The reported measurement is from the top. If measured from the bottom, the thickness is 7.7 inches.

8.0
Design
Build Quality

The build quality of the Predator XB3 is good. There are no gaps or loose ends and the monitor feels very sturdy.

Picture Quality
6.0
Picture Quality
Contrast
Native Contrast
1005 : 1
Contrast With Local Dimming
N/A

The native contrast ratio on the Predator XB3 is mediocre. Blacks look like gray in a dark room and the performance is in the lower range of IPS monitors similar to the LG 27UD58-B.

0
Picture Quality
Local Dimming
Local Dimming
No
Backlight
Full-Array

This monitor doesn't have a local dimming feature. The above video is provided for reference only.

7.6
Picture Quality
SDR Peak Brightness
SDR Real Scene
292 cd/m²
SDR Peak 2% Window
326 cd/m²
SDR Peak 10% Window
326 cd/m²
SDR Peak 25% Window
326 cd/m²
SDR Peak 50% Window
326 cd/m²
SDR Peak 100% Window
326 cd/m²
SDR Sustained 2% Window
326 cd/m²
SDR Sustained 10% Window
326 cd/m²
SDR Sustained 25% Window
326 cd/m²
SDR Sustained 50% Window
326 cd/m²
SDR Sustained 100% Window
326 cd/m²
SDR ABL
0.000

The Acer Predator XB273K has good SDR peak brightness and you should have no issues placing it in a relatively bright room. You won't notice any variation in peak brightness with different content.

6.7
Picture Quality
HDR Peak Brightness
HDR Real Scene
381 cd/m²
HDR Peak 2% Window
422 cd/m²
HDR Peak 10% Window
422 cd/m²
HDR Peak 25% Window
422 cd/m²
HDR Peak 50% Window
422 cd/m²
HDR Peak 100% Window
422 cd/m²
HDR Sustained 2% Window
421 cd/m²
HDR Sustained 10% Window
422 cd/m²
HDR Sustained 25% Window
422 cd/m²
HDR Sustained 50% Window
422 cd/m²
HDR Sustained 100% Window
422 cd/m²
HDR ABL
0.000

The HDR peak brightness for the Acer Predator XB273K is decent. It gets decently bright, but the monitor can't deliver bright highlights the way they are meant to be.

7.4
Picture Quality
Horizontal Viewing Angle
Color Washout From Left
30 °
Color Washout From Right
32 °
Color Shift From Left
59 °
Color Shift From Right
63 °
Brightness Loss From Left
35 °
Brightness Loss From Right
37 °
Black Level Raise From Left
70 °
Black Level Raise From Right
70 °
Gamma Shift From Left
32 °
Gamma Shift From Right
33 °

The horizontal viewing angles of the Predator XB273K are disappointing, which is surprising for an IPS monitor. In fact, it's the worst performance from the ones we've measured so far. Colors shift and brightness drops faster than other IPS monitors. But what hurts performance the most is that the black levels don't stay relatively constant throughout our test as they do in all other IPS monitors we've tested so far. Instead, black levels rise higher than our threshold when you look at the monitor from the right.

In normal use you shouldn't experience this, as it's rare that you look at a monitor at 45 degrees.

7.5
Picture Quality
Vertical Viewing Angle
Color Washout From Below
31 °
Color Washout From Above
29 °
Color Shift From Below
70 °
Color Shift From Above
67 °
Brightness Loss From Below
34 °
Brightness Loss From Above
31 °
Black Level Raise From Below
70 °
Black Level Raise From Above
70 °
Gamma Shift From Below
39 °
Gamma Shift From Above
36 °

The vertical viewing angles are good, as expected from an IPS monitor. Black levels stay low and the image doesn't wash out. Unfortunately, when looking from above, you might experience some decrease in brightness and loss of color accuracy at relatively small angles. This doesn't happen when you look at the screen from below.

8.6
Picture Quality
Gray Uniformity
50% Std. Dev.
4.169 %
50% DSE
0.098 %
5% Std. Dev.
0.348 %
5% DSE
0.049 %

The gray uniformity of the Acer XB273K is excellent. There is some vignetting that you can spot at the corners, but the center of the screen is uniform so you shouldn't expect any dirty screen effect while browsing the web. In darker scenes, the uniformity is even better.

4.1
Picture Quality
Black Uniformity
Native Std. Dev.
3.300 %
Std. Dev. w/ L.D.
N/A

The black uniformity of the Acer Predator XB273K is bad. There is noticeable backlight bleed in the top left corner and generally along the edges. This is not unusual for IPS monitors, and it's only noticeable in dark scenes in a very dark room.

7.7
Picture Quality
Pre Calibration
Picture Mode
Standard
Luminance
231 cd/m²
Luminance Settings
100
Contrast Setting
51
RGB Controls
50-50-50
Gamma Setting
Default
Color Temperature
5976 K
White Balance dE
3.10
Color dE
2.41
Gamma
2.13

The out-of-the-box accuracy of this monitor is good. Although some inaccuracies are obvious in the grays and the color temperature is a little warm, color inaccuracies can hardly be spotted by the untrained eye. Gamma follows the target closely, but most bright scenes are brighter than they should be.

9.7
Picture Quality
Post Calibration
Picture Mode
User
Luminance
100 cd/m²
Luminance Settings
131
Contrast Setting
50
RGB Controls
26-31-36
Gamma Setting
Default
Color Temperature
6453 K
White Balance dE
0.54
Color dE
0.26
Gamma
2.18

This monitor has remarkable accuracy after calibration. Any remaining inaccuracies are so small than only with the aid of a colorimeter you can detect them. Gamma follows the target curve very closely and the color temperature is very close to the 6500K target.

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.

9.1
Picture Quality
SDR Color Gamut
sRGB xy
100.0 %
Adobe RGB xy
82.0 %
sRGB Picture Mode
User
Adobe RGB Picture Mode
User

sRGB Picture Mode: User (calibrated)
Adobe RGB Picture Mode: User

Excellent SDR color gamut, very similar to the Dell U3219Q. It can display the entire sRGB color space, which is great, and it has very good coverage of the Adobe RGB color space, which is great for professional photo editing. If you're looking for even better coverage of the Adobe RGB space, check out the Acer Predator X27.

9.5
Picture Quality
SDR Color Volume
sRGB In ICtCp
98.6 %
Adobe RGB In ICtCp
90.5 %
sRGB Picture Mode
User
Adobe RGB Picture Mode
User

sRGB Picture Mode: User
Adobe RGB Picture Mode: User

Excellent SDR color volume. The monitor can display most colors in its gamut at almost all brightness levels. Unfortunately, the low contrast doesn't allow it to display dark saturated colors very well.

7.6
Picture Quality
HDR Color Gamut
Wide Color Gamut
Yes
DCI P3 xy
85.2 %
Rec. 2020 xy
67.7 %
DCI P3 Picture Mode
User
Rec. 2020 Picture Mode
User

DCI P3 Picture Mode: User
Rec. 2020 Picture Mode: User

Good HDR color gamut. The Acer XB273K can display a wide color gamut and although the coverage of the DCI-P3 color space is similar to the Acer Predator X27, in the wider Rec. 2020, the coverage is narrower.

7.6
Picture Quality
HDR Color Volume
DCI-P3 In ICtCp
83.1 %
Rec. 2020 In ICtCp
68.0 %
DCI P3 Picture Mode
User
Rec. 2020 Picture Mode
User

DCI P3 Picture Mode:User
Rec. 2020 Picture Mode: User

Good HDR color volume, slightly better than the X27 in DCI P3. In Rec. 2020 the color volume isn't as good as the X27, and the XB273K is limited by its color gamut and its low native contrast ratio, so it can't produce colors as bright as pure white or display dark, saturated colors very well.

10
Picture Quality
Image Retention
IR After 0 Min Recovery
0.00 %
IR After 2 Min Recovery
0.03 %
IR After 4 Min Recovery
0.00 %
IR After 6 Min Recovery
0.01 %
IR After 8 Min Recovery
0.00 %
IR After 10 Min Recovery
0.00 %

The Acer Predator XB273K doesn't have any signs of image retention. Our test depicts some faint image retention after 2 minutes of rest time and again after 6 minutes of rest time. As you can see in the following images, this isn't image retention, but rather noise detected from our test. Also, our scoring isn't correct since it penalizes for the noise it detected. In the next test bench update, we'll update this test.

Reference image
IR after 0 min recovery
IR after 2 min recovery
IR after 4 min recovery
IR after 6 min recovery
IR after 8 min recovery
IR after 10 min recovery

8.6
Picture Quality
Gradient
Color Depth
8 Bit

Excellent gradient handling, with inevitable signs of 8-bit banding.

10
Picture Quality
Color Bleed
Pixel Row Error
0.000 %
Pixel Column Error
0.002 %

There is some extremely minor vertical color bleed, but this isn't at all noticeable with regular content.

7.5
Picture Quality
Reflections
Screen Finish
Matte
Total Reflections
5.5 %
Indirect Reflections
3.6 %
Calculated Direct Reflections
1.9 %

The Predator XB273K has decent reflection handling, just like the Acer VG271UP and the Gigabyte Aorus AD27QD. It's recommended, however, to avoid direct light and the included blinders can help to reduce glare from side sources.

9.5
Picture Quality
Text Clarity
Sub-Pixel Layout
RGB
Motion
8.4
Motion
Response Time @ Max Refresh Rate
Best Overdrive Setting
Normal
Rise / Fall Time
3.7 ms
Total Response Time
12.0 ms
Overshoot Error
12.6 %
Dark Rise / Fall Time
3.9 ms
Dark Total Response Time
11.4 ms
Dark Overshoot Error
13.8 %

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

The response time of the Acer Predator XB273K is extremely fast and motion is crisp with only a little blur trail behind fast-moving content. The level of overdrive can be changed between three settings: 'Off', 'Normal', and 'Extreme'. We recommend the 'Normal' setting, as the 'Extreme' setting has severe overshoot in some transitions, especially in dark scenes. You can see the charts and the motion photos for the three levels at the table above.

8.7
Motion
Response Time @ 60Hz
Best Overdrive Setting
Normal
Rise / Fall Time
5.9 ms
Total Response Time
11.2 ms
Overshoot Error
1 %
Dark Rise / Fall Time
6.5 ms
Dark Total Response Time
12.7 ms
Dark Overshoot Error
0.0 %
10
Motion
Image Flicker
Flicker-Free Yes
PWM Dimming Frequency
0 Hz

This monitor has a completely flicker-free backlight at all levels, so it's a good choice for those who are bothered by flicker. Unfortunately, there isn't an optional Black Frame Insertion feature to help make motion look crisper.

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

The Acer Predator XB273K has an excellent refresh rate and supports G-SYNC for a nearly tear-free gaming experience. The VRR range is excellent provided you use the DisplayPort. If you use the HDMI port, the 4k VRR maximum is 60Hz due to bandwidth limitations, and the HDMI VRR range at 1080p is 24Hz to 98Hz.

Inputs
9.3
Inputs
Input Lag
Native Resolution
5.3 ms
Native Resolution @ 60Hz
21.4 ms
Variable Refresh Rate
5.3 ms
Variable Refresh Rate @ 60Hz
13.9 ms
10 Bit HDR
11.4 ms
Black Frame Insertion (BFI)
N/A

The Predator XB273K has remarkably low input lag. This is great news for competitive gamers when every millisecond counts. Unfortunately, the input lag at 60Hz is slightly high, which isn't good news for those who intend to use it with consoles.

We performed our HDR test at 98Hz, as it was the highest possible refresh rate the monitor could do on DisplayPort 1.4 on HDR 10-bit.

9.2
Inputs
Resolution And Size
Native Resolution 3840 x 2160
Aspect Ratio 16:9
Megapixels 8.3 MP
Pixel Density
164 PPI
Screen Diagonal 27.0 inches
Screen Area 310 sq inches

The Predator XB273 is a 27" 4k monitor that offers you great screen real estate and excellent detail for your games or your work. It's a good option for multitasking.