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    Table of Contents
  1. Intro
  2. Design
    1. Stand
    2. Ergonomics
    3. Back
    4. Borders
    5. Thickness
    6. Build Quality
  3. Picture Quality
    1. Contrast
    2. Local Dimming
    3. SDR Peak Brightness
    4. HDR Peak Brightness
    5. Horizontal Viewing Angle
    6. Vertical Viewing Angle
    7. Gray Uniformity
    8. Black Uniformity
    9. Pre Calibration
    10. Post Calibration
    11. SDR Color Gamut
    12. SDR Color Volume
    13. HDR Color Gamut
    14. HDR Color Volume
    15. Image Retention
    16. Reflections
    17. Gradient
    18. Color Bleed
  4. Motion
    1. Motion Blur
    2. Image Flicker
    3. Refresh Rate
  5. Inputs
    1. Input Lag
    2. Resolution and Size
    3. Main Inputs
    4. Other Inputs
    5. Total Inputs
  6. Features
    1. Additional Features
    2. On-Screen Display (OSD)
    3. Controls
    4. In The Box
  7. Conclusion
  8. Q&A
Reviewed on Oct 12, 2017 , Ian Cumming, Mehdi Azzabi, Martin Leduc, Eric Bousquet

Acer Predator XB271HU Gaming Monitor
MONITOR REVIEW

Usage Ratings - Version 1.0
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Test Benches:

  • 1.0: Fall 2017
7.7Mixed Usage
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Score components:
  • 30% Office
  • 30% Multimedia
  • 25% Gaming
  • 10% Media Creation
  • 5% HDR Gaming
Size : 27 "
Resolution : 2560x1440
Refresh Rate : 144 Hz
LCD Type
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What it is: Type of LCD technology used by the monitor.
When it matters: Different technologies have different viewing angle properties.
:
IPS

The Acer Predator XB271HU is a very good high-end IPS-type gaming monitor. It features G-SYNC and a high 144 Hz refresh rate, making it exceptionally fluid and responsive. It has a decently wide viewing angle which helps keep it versatile and it also gets bright enough to fit environments. Unfortunately, though, its overall picture quality leaves a lot to be desired due to its low contrast ratio and cloudy blacks.

Test Results
Design 7.5
Picture Quality 6.4
Motion 9.2
Inputs 9.0
Pros
  • G-SYNC offers a great gaming experience
  • Wide viewing angle gives a variety of possible viewing positions
Cons
  • Low contrast means blacks look grey in a dark room
  • No HDR support

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Predator XB271HU
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7.5

Design

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Score components: Subjectively assigned
Acer Predator XB271HU Design Picture
Curved : No
Curve radius : N/A
Weight (without stand) : 12.4lbs (5.6 kg)
Weight (with stand) : 17.6lbs (8.0 kg)

The Predator XB271HU is a good looking monitor, with a fairly small and sleek stand. There are a range of ergonomic adjustment options to fit any desk and some basic cable management down the back of the stand. The borders are quite thin, and the build quality is decent.

Stand
Acer Predator XB271HU Stand picture
Width : 17.6" (44.8 cm)
Depth : 10.6" (26.9 cm)

The stand is quite small and looks good with some red accents. It supports the monitor well.

8.7 Ergonomics
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What it is: How much the position of the screen can be adjusted to match the viewing preference of the user.
When it matters: All usages, but especially office and gaming use.
Score components:
  • 45% Height Adjustment
  • 18% Switch portrait/landscape
  • 18% Swivel Range
  • 18% Tilt Range
Acer Predator XB271HU Ergonomics picture
Height Adjustment : 5.9" (15.1 cm)
Switch portrait/landscape : Yes
Swivel Range : 30° to -30°
Tilt Range : -22.5° to 5°

There is quite a good range of ergonomic adjustment options available, which makes it easy to find a comfortable setup. The screen also rotates both directions to portrait, which is useful for those who would like the inputs/controls on one side or the other.

Back
Acer Predator XB271HU Back picture
Wall Mount : Vesa 100x100

The rear of the monitor is quite basic but looks good. There is a hole in the back of the stand for cable management, as visible here.

Borders
Acer Predator XB271HU Borders picture
Borders : 0.3" (0.7 cm)

The borders of the XB271HU are quite thin and look good.

Thickness
Acer Predator XB271HU Thickness picture
Thickness (with stand) : 8.7" (22.0 cm)
Thickness (without stand) : 2.4" (6.0 cm)

The monitor appears a bit thick when viewed from the side, as the area where the components and inputs are located is quite bulky.

7.0 Build Quality
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What it is: How well built and sturdy the monitor is, and how good the materials used to build it are.
When it matters: All usages.
Score components: Subjectively assigned
Acer Predator XB271HU Build Quality picture

The build quality of the Acer Predator is quite good. The parts are all plastic but do feel well constructed.

The picture quality of the Predator XB271HU is decent. The native contrast ratio is low, so blacks appear gray in a dark room but in a bright room, this isn't an issue. The peak brightness is good and allows the monitor to overcome glare, which is necessary because the reflection handling of this monitor is below average. Out of the box, the colors aren't very accurate. However, the image doesn't degrade much at an angle which is great. The XB271HU doesn't support more advanced features such as local dimming or HDR to improve the picture quality further.

6.1 Contrast
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What it is: Brightness difference between white and black. This is the main component of picture quality.
When it matters: Always, but especially when watching dark scenes.
Score components:
Acer Predator XB271HU Checkerboard Picture
Native Contrast
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What it is: Ratio of the white brightness divided by the blacks measured on our checkerboard test pattern with a white target of 100 cd/m².
When it matters: Dark scenes in a dark room.
Good value: > 3,000
Noticeable difference: 500
:
1055 : 1
Contrast with local dimming
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What it is: Ratio of the white brightness divided by the blacks measured on our checkerboard test pattern with local dimming turned on (maximum) with a white target of 100 cd/m².
When it matters: Dark scenes in a dark room.
Good value: > 3,000
Noticeable difference: 500
:
N/A

The Acer Predator PC monitor has an average native contrast ratio, but it is in line with other IPS monitors. When viewed in a dark room, blacks are not deep and look more like gray than really black. If ambient light is present, the low contrast ratio effect is less noticeable though.

0 Local Dimming
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What it is: The lights behind the LCD layer adapt to the picture displayed, improving the contrast ratio.
When it matters: Dark scenes viewed in a dark room.
Score components: Subjectively assigned
Local Dimming
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What it is: Whether it has a feature that controls the LEDs behind the LCD layer, to match the picture and darkens the dark portion of it.
When it matters: On LED TVs only. Dark scenes viewed in a dark room.
:
No
Backlight
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What it is: Configuration of the lights of the backlight.
When it matters: Effectiveness of the local dimming.
Good value: Full-array/direct lighting is better for local dimming. As for the uniformity of the screen, it depends on the implementation. Some edge-lit monitors have more uniform blacks than some full-array monitors.
:
Edge

The Acer Predator XB271HU does not have a local dimming feature. The video is for reference only.

7.5 SDR Peak Brightness
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What it is: How bright the screen can get. Measured with local dimming and with SDR content.
When it matters: Bright living rooms; bright objects; SDR content.
SDR Real Scene
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What it is: The maximum luminosity the TV can obtain while playing a movie or while watching a TV show. Our Real Scene was selected to represent a more regular movie condition. All measurements are made with the TV set to be as bright as possible, but with a 6500k white. Measured with local dimming on, max backlight and with an SDR signal. Scene: here.
When it matters: When watching movies and TV shows in SDR.
:
286 cd/m²
SDR Peak 2% Window
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What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 2% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright highlights, present on screen for a short time
:
314 cd/m2
SDR Peak 10% Window
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What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 10% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright objects, present on screen for a short time
:
314 cd/m2
SDR Peak 25% Window
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What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 25% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
:
314 cd/m2
SDR Peak 50% Window
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What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 50% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
:
314 cd/m2
SDR Peak 100% Window
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What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 100% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
:
313 cd/m2
SDR Sustained 2% Window
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What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 2% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright highlights, persistent during a scene.
:
314 cd/m2
SDR Sustained 10% Window
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What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 10% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright objects, persistent during a scene.
:
314 cd/m2
SDR Sustained 25% Window
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What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 25% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
:
314 cd/m²
SDR Sustained 50% Window
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What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 50% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
:
314 cd/m2
SDR Sustained 100% Window
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What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 100% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
:
313 cd/m2
SDR ABL
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What it is: The standard deviation of the SDR sustained brightness, after linearizing for noticeable differences in luminosity
When it matters: Content with large bright areas, such as for PC or video game use, and sports such as hockey
:
0.0

The Acer XB271HU is capable of reaching good levels of brightness, making it suitable for most viewing environments. Its constant brightness means the screen won't fluctuate in luminance depending on what's shown.

0 HDR Peak Brightness
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What it is: How bright the screen can get. Measured with local dimming and with HDR content.
When it matters: HDR content
HDR Real Scene : N/A
HDR Peak 2% Window : N/A
HDR Peak 10% Window : N/A
HDR Peak 25% Window : N/A
HDR Peak 50% Window : N/A
HDR Peak 100% Window : N/A
HDR Sustained 2% Window : N/A
HDR Sustained 10% Window : N/A
HDR Sustained 25% Window : N/A
HDR Sustained 50% Window : N/A
HDR Sustained 100% Window : N/A
HDR ABL : N/A

HDR is not supported.

7.2 Horizontal Viewing Angle
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What it is: Color accuracy when viewed from the side.
Acer Predator XB271HU Horizontal Color Shift Picture
Color Shift from Left
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What it is: Angle where the colors noticeable shift compared to when viewed from directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When sharing your monitor with people on your left
Good value: > 50°
Noticeable difference: 10°
:
37 °
Color Shift from Right
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What it is: Angle where the colors noticeable shift compared to when viewed from directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When sharing your monitor with people on your right
Good value: > 50°
Noticeable difference: 10°
:
36 °
Acer Predator XB271HU Horizontal Brightness Picture
Brightness from Left
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What it is: Angle where the brightness drops to 50% of the brightness directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When sharing your monitor with people on your left.
Good value: > 50°
Noticeable difference: 10°
:
46 °
Brightness from Right
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What it is: Angle where the brightness drops to 50% of the brightness directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When sharing your monitor with people on your right.
Good value: > 50°
Noticeable difference: 10°
:
47 °
Acer Predator XB271HU Horizontal Black Level Picture
Black Level from Left
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What it is: Angle where the black level drops to 50% of the black level directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When sharing your monitor with people on your right.
Good value: > 50°
Noticeable difference: 10°
:
75 °
Black Level from Right
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What it is: Angle where the black level drops to 50% of the black level directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When sharing your monitor with people on your right.
Good value: > 50°
Noticeable difference: 10°
:
75 °
Curve Radius : N/A

Decent horizontal viewing angle. The XB271HU's reasonably wide viewing angle means no deterioration is visible when directly in front, and the screen remains usable to users sharing the screen on either side.

7.9 Vertical Viewing Angle
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What it is: Color accuracy when viewed from the top or bottom.
Acer Predator XB271HU Vertical Color Shift Picture
Color Shift from Below
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What it is: Angle where the colors noticeable shift compared to when viewed from directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When looking at a monitor from below.
Good value: > 50°
Noticeable difference: 10°
:
27 °
Color Shift from Above
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What it is: Angle where the colors noticeable shift compared to when viewed from directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When looking at a monitor when standing up.
Good value: > 50°
Noticeable difference: 10°
:
25 °
Acer Predator XB271HU Vertical Brightness Picture
Brightness from Below
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What it is: Angle where the brightness drops to 50% of the brightness directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When looking at a monitor from below.
Good value: > 50°
Noticeable difference: 10°
:
34 °
Brightness from Above
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What it is: Angle where the brightness drops to 50% of the brightness directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When looking at a monitor while standing up.
Good value: > 50°
Noticeable difference: 10°
:
32 °
Acer Predator XB271HU Vertical Black Level Picture
Black Level from Below
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What it is: Angle where the black level drops to 50% of the black level directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When looking at a monitor from below.
Good value: > 50°
Noticeable difference: 10°
:
75 °
Black Level from Above
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What it is: Angle where the black level drops to 50% of the black level directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When looking at a monitor while standing up.
Good value: > 50°
Noticeable difference: 10°
:
75 °

Great vertical viewing angle. Moving your head up and down causes no visible shift in the image, and the Predator XB271 remains usable when standing above it or while sitting below the screen.

8.5 Gray Uniformity
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What it is: Evenness of colors onscreen (not just gray).
When it matters: Solid colors. Sports, panning shots.
Score components:
Acer Predator XB271HU 50% Uniformity Picture
50% Std. Dev.
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What it is: Average squared difference of pixels when displaying a mid 50% gray.
When it matters: Solid colors. Sports, panning shots.
Good value: < 2.5%
Noticeable difference: 1%
:
3.048 %
50% DSE
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What it is: High-frequency variance of uniformity. Dark spots on the screen.
When it matters: Solid colors. Sports, panning shots.
Good value: < 0.165%
Noticeable difference: 0.025%
:
0.125 %
Acer Predator XB271HU 5% Uniformity Picture
5% Std. Dev.
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What it is: Average squared difference of pixels when displaying a mid 5% gray.
When it matters: Dark scenes.
Good value: < 1.15%
Noticeable difference: 1%
:
0.397 %
5% DSE
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What it is: High-frequency variance of uniformity. Dark spots on the screen.
When it matters: Dark scenes.
Good value: < 0.116%
:
0.042 %

The Acer Predator has a great overall gray uniformity. The 50% gray uniform looks good, but there are some small imperfections, like the little vertical ripples and also the side that seems to be a bit darker than the center. Overall, the 50% is still pretty even and dirty screen effect is not noticeable.

4.5 Black Uniformity
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What it is: Evenness of blacks.
When it matters: Dark scenes viewed in a dark room.
Score components:
Acer Predator XB271HU Native Black Uniformity Picture
Native Std. Dev.
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What it is: Average of the squared difference of the blacks.
When it matters: Dark scenes viewed in a dark room.
:
3.005 %
Std. Dev. w/ L.D.
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What it is: Average of the squared difference of the blacks with Local Dimming enabled
When it matters: Dark scenes viewed in a dark room.
:
N/A

The Acer Predator has a poor black uniformity. As seen on our test picture, some clouding and flashlighting are visible near almost every edge of the display, which hurt considerably the black uniformity.

3.6 Pre Calibration
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What it is: Monitor's color accuracy before a full calibration. The measurements are taken with out of the box 'factory setting'.
When it matters: All video on an uncalibrated TV. This represents most people's use cases.
Score components:
Acer Predator XB271HU Pre Calibration Picture Acer Predator XB271HU Pre Gamma Curve Picture Acer Predator XB271HU Pre Color Picture
Picture Mode
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What it is: The picture mode that was used to do the pre-calibration reading. We usually go for the picture mode that gives us the more control over all the picture quality setting.
:
User
Luminance
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What it is: The luminance at which the pre-calibration reading was done. This represents the luminance of the monitor when it is at the factory default settings.
:
305.5 cd/m2
Luminance Settings
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What it is: The luminance settings, often named 'Brightness' on monitors, usually range from 0 to 100.
:
80
Contrast Setting
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What it is: The monitor contrast setting, usually ranging from 0 to 100.
:
50
RGB controls
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What it is: This is the value for each color (red, green, and blue) used in the monitor internal RGB cuts/gains controls. If the monitor does not have an internal RGB cuts/gains controls, then the color temperature setting will be used instead, and the color temperature that gives us the best result will be used.
:
100-100-100
Color Temperature
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What it is: The color temperature is a measure of the color of light. A colder color temperature (7000K) will look bluer and a warmer color temperature (4000K) will look yellower/redder. 6500K is the standard color for PC monitors and also for the sRGB color standard.
When it matters: When you care about color reproduction and accuracy.
Good value: 6500K
Noticeable difference: 400K
:
5925 K
White Balance dE
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What it is: Average inaccuracy of shades of gray.
When it matters: Overall color temperature of all video.
Good value: < 3
Noticeable difference: 1
:
5.27
Color dE
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What it is: Average inaccuracy of colors.
When it matters: All colors.
Good value: < 3
Noticeable difference: 1
:
7.25
Gamma
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What it is: Brightness of shades of gray.
When it matters: Shadows.
Good value: Between 2.1 and 2.3 (our target is 2.2)
Noticeable difference: 0.1
:
2.22

Out of the box and when set on the most accurate picture mode, the Acer Predator still has poor accuracy. The white balance dE and color dE are both well over what most enthusiasts would consider inaccurate. This is particularly noticeable while looking at the pre-color picture, where the white point is completely off target.

9.6 Post Calibration
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What it is: Monitor's color accuracy after a full calibration with a spectrophotometer.
When it matters: All graphics and video content on a monitor that has been professionally calibrated.
Score components:
Acer Predator XB271HU Post Calibration Picture Acer Predator XB271HU Post Gamma Curve Picture Acer Predator XB271HU Post Color Picture
Picture Mode
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What it is: The picture mode that was used to do the calibration reading. We usually go for the picture mode that gives us the more control over all the picture quality setting.
:
User
Luminance
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What it is: The luminance at which the calibration was executed. We aim for a luminance level of 100 cd/m².
:
99.5 cd/m2
Luminance Settings
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What it is: The luminance settings, often named 'Brightness' on monitors, usually range from 0 to 100.
:
20
Contrast Setting
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What it is: The monitor contrast setting, usually ranging from 0 to 100.
:
50
RGB controls
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What it is: This is the value for each color (red, green, and blue) used in the monitor internal RGB cuts/gains controls. If the monitor does not have an internal RGB cuts/gains controls, then the color temperature setting will be used instead, and the color temperature that gives us the best result will be used.
:
94-91-99
Color Temperature
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What it is: The color temperature is a measure of the color of light. A colder color temperature (7000K) will look bluer and a warmer color temperature (4000K) will look yellower/redder. 6500K is the standard color for PC monitors and also for the sRGB color standard.
When it matters: When you care about color reproduction and accuracy.
Good value: 6500K
Noticeable difference: 400K
:
6521 K
White Balance dE
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What it is: Average inaccuracy of shades of gray.
When it matters: Overall color temperature of all videos.
Good value: < 3
Noticeable difference: 1
:
0.51
Color dE
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What it is: Average inaccuracy of colors.
When it matters: All colors.
Good value: < 3
Noticeable difference: 1
:
0.65
Gamma
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What it is: Brightness of shades of gray.
When it matters: Shadows.
Good value: Between 2.1 and 2.3 (our target is 2.2)
Noticeable difference: 0.1
:
2.19

After calibration, which was done on the 'User' picture mode, the Acer Predator is much more precise. The white balance and color accuracy are spot on and most of the issues are corrected, especially the white point, which now is right on target. Also, after calibration, the gamma is not tracking our 2.4 sRGB target.

You can download our ICC profile calibration here.

8.7 SDR Color Gamut
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What it is: The palette of colors the monitor can display
When it matters: General content consumption or production
Score components:
Acer Predator XB271HU Color Gamut s.RGB Picture
s.RGB xy
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What it is: Coverage of the s.RGB colorspace on CIE 1931 xy.
When it matters: Almost all content. Includes websites, standard windows environment and SDR movies
Good value: > 95%
Noticeable difference: 5%
:
97.7 %
Acer Predator XB271HU Color Gamut ARGB Picture
Adobe RGB xy
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What it is: Coverage of the Adobe RGB colorspace on CIE 1931 xy.
When it matters: Professional photography.
Good value: > 90%
Noticeable difference: 5%
:
76.3 %

The XB271HU has no issue covering the standard s.RGB colorspace, which is great for most uses. Its coverage of the Adobe RGB colorspace, however, is quite limited, making this monitor less useful for professional use.

9.0 SDR Color Volume
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What it is: How much of the SDR color spaces the monitor can reproduce
When it matters: General usage and SDR media creation
Score components:
Acer Predator XB271HU s.RGB Color Volume ITP picture
s.RGB in ICtCp
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What it is: How much of the s.RGB colorspace a monitor can display at different luminosity levels
When it matters: Most content, including web, SDR video games, and SDR media creation
:
96.9 %
Acer Predator XB271HU Adobe RGB Color Volume ITP Picture
Adobe RGB in ICtCp
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What it is: How much of the Adobe RGB colorspace a monitor can display at different luminosity levels, normalized to the monitor's peak brightness.
When it matters: Professional media creation
:
82.8 %

Good native color volume. The Predator XB271 has no issue filling up most of its native s.RGB colorspace. It does, however, have some difficulty reproducing very dark tones, mostly due to its limited contrast ratio.

0 HDR Color Gamut
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What it is: The monitor's ability to reproduce HDR color spaces
When it matters: HDR content consumption or media creation
Score components:
Wide Color Gamut
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What it is: Whether the monitor can support wider color gamuts
When it matters: HDR content and media creation
:
No
DCI P3 xy
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What it is: Coverage of the DCI P3 colorspace on CIE 1931 xy
When it matters: When consuming or producing HDR content.
:
N/A
Rec. 2020 xy
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What it is: Coverage of the Rec.2020 colorspace on CIE 1931 xy.
When it matters: When consuming or producing HDR content.
Good value: > 90%
Noticeable difference: 5%
:
N/A

HDR gamuts are not supported.

0 HDR Color Volume
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What it is: How much of the HDR color spaces a monitor can display at different luminosity levels.
When it matters: HDR content consumption and production. Includes streaming services, UHD Blu-rays and HDR games.
Score components:
DCI-P3 in ICtCp
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What it is: How much of the DCI-P3 colorspace a monitor can display at different luminosity levels, normalized to the monitor's peak brightness output.
When it matters: HDR content.
Good value: 80%
Noticeable difference: 5%
:
N/A
Rec. 2020 in ICtCp
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What it is: How much of the Rec. 2020 colorspace a monitor can display at different luminosity levels, normalized to the monitor's peak brightness output.
When it matters: HDR content.
Good value: 80 %
Noticeable difference: 5 %
:
N/A

HDR color volumes are not supported.

10 Image Retention
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What it is: How much a static image is retained on a monitor screen after a certain amount of time.
When it matters: When working or playing video games on your PC monitor.
Acer Predator XB271HU Image Retention Picture
IR after 0 min recovery
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What it is: Image retention measured right after the static image exposure, without recovery time.
When it matters: When changing use or right after changing the type of on screen content (i.e. stopping playing video game to watch a movie).
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0 %
IR after 2 min recovery
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What it is: Image retention measured after a recovery time of 2 minutes.
When it matters: When changing use or right after changing the type of on screen content (i.e. stopping playing video game to watch a movie).
Good value: 0 is perfect
Noticeable difference: 0.015%
:
0 %
IR after 4 min recovery
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What it is: Image retention measured after a recovery time of 4 minutes.
When it matters: When changing use or right after changing the type of on screen content (i.e. stopping playing video game to watch a movie).
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0 %
IR after 6 min recovery
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What it is: Image retention measured after a recovery time of 6 minutes.
When it matters: When changing use or right after changing the type of on screen content (i.e. stopping playing video game to watch a movie).
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0 %
IR after 8 min recovery
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What it is: Image retention measured after a recovery time of 8 minutes.
When it matters: When changing use or right after changing the type of on screen content (i.e. stopping playing video game to watch a movie).
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0 %
IR after 10 min recovery
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What it is: Image retention measured after a recovery time of 10 minutes.
When it matters: When changing use or right after changing the type of on screen content (i.e. stopping playing video game to watch a movie).
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0 %

The Acer Predator does not suffer from image retention, as even right after the 10 minutes burn-in scene, the screen is free of any image retention.

6.0 Reflections
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What it is: How much light is reflected by the TV.
When it matters: Bright rooms.
Score components: Subjectively assigned
Acer Predator XB271HU Average room Acer Predator XB271HU Average room off picture Acer Predator XB271HU Bright room off picture

The XB271HU is a bit more reflective than most monitors. This results in brighter and more distinct reflections which may be an issue in brighter rooms.

8.6 Gradient
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What it is: How finely levels of color can be displayed.
When it matters: Details in shadows, sky and skin tones. Matters more for HDR content.
Score components: Subjectively assigned
Acer Predator XB271HU Gradient Picture
Color Depth
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What it is: Number of bits per pixel to represent a specific color. Note: we consider 8-bit with dithering to be equivalent to 10-bit, as long as the 10-bit gradient looks smooth.
When it matters: HDR content like HDR video games or HDR UHD movies. Won't matter for regular Blu-ray movies, SDR video game or desktop environment content displayed from a Windows PC. Those are limited to 8-bit color.
Good value: 10-bit.
Noticeable difference: 1 bit.
:
8 Bit

Great performance for the Acer Predator on our gradient test. Beside the 8-bit banding, there is some little shade imperfection in the grayscale, but most of the rest of the gradient look good.

9.1 Color Bleed
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What it is: How much the color from one area of the screen affects the color in another area of the screen.
When it matters: All usages, but especially media creation.
Score components:
Acer Predator XB271HU Color bleed horizontal
Pixel row error
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What it is: The amount of bleed that appears across the screen horizontally.
When it matters: General usage of a PC monitor, can appear when browsing the web or with media creation like graphics.
Good value: <0.2%
Noticeable difference: 0.1%
:
0.000 %
Acer Predator XB271HU Color bleed vertical
Pixel column error
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What it is: Amount of color bleeding that appears across the screen vertically.
When it matters: Most uses of a PC monitor. Can appear while browsing the web or when editing images or graphics.
Good value: <0.2%
Noticeable difference: 0.1%
:
0.171 %

Some vertical color bleed is present, however, this won't be noticeable in most situations. It is visible in the vertical photo as different shades of gray above and below each color.

9.2

Motion

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Score components:

The motion handling of the XB271HU is excellent. It has a remarkable response time, which results in very short trails following moving objects. It uses DC dimming, so the screen is flicker-free, and BFI can be enabled to clear up motion further. The monitor has a high native refresh rate of 144Hz, which can be overclocked to 165Hz. It can use G-Sync to display variable frame rates lower than its native refresh rate when used with a compatible video card.

9.3 Motion Blur
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What it is: The performance of the pixel response time. Poor response time causes trails to follow moving objects. Response time is one of a few sources of motion blur.
When it matters: When there's fast movement on screen, such as during video games and sports.
Score components:
Acer Predator XB271HU Motion Blur Picture Acer Predator XB271HU Response Time Chart
80% Response Time
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What it is: How quickly pixels can reach 80% of a full transition from one color to another.
When it matters: When there's fast movement on screen, such as during video games and sports.
Good value: < 8 ms
Noticeable difference: 4 ms
:
2.8 ms
100% Response Time
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What it is: How quickly pixels can fully transition from one color to another.
When it matters: When there's fast movement on screen, such as during video games and sports.
Good value: < 20 ms
Noticeable difference: 10 ms
:
13.1 ms
Best Overdrive Setting
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What it is: If the monitor has adjustable pixel overdrive settings, which one produces the best response time with minimal overshoot.
When it matters: When adjusting the monitor's settings to get the least possible motion blur.
:
Normal

OD Off
OD Normal
OD Extreme

The Predator XB271HU has a very fast response time, which is excellent when watching fast-paced content. Pixel transition speed can be modified by changing the 'OD' (Overdrive) setting. We recommend using the 'Normal' setting for fast response with minimal overshoot, but if you are bothered by the lighter trails following moving objects caused by pixel transition overshoot, you should use the 'OD Off' setting. We don't recommend using 'OD Extreme', as it introduces significant and easily visible overshoot artifacts behind moving objects.

9.4 Image Flicker
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What it is: Luminosity pattern when displaying images
When it matters: Nearly all the time during PC monitor use, but especially during fast movement such as video games
Acer Predator XB271HU Backlight Picture
Flicker-free : Yes
PWM Dimming Frequency
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What it is: Flickering pattern at different luminosities.
When it matters: For people sensitive to flickering.
Good value: N/A or high frequencies (> 300 Hz). Frequencies that are multiples of 60Hz are better.
:
0 Hz
Black Frame Insertion (BFI) : Yes
Acer Predator XB271HU BFI Picture Acer Predator XB271HU BFI Frequency Picture
BFI Maximum Frequency : 120 Hz
BFI Minimum Frequency : 85 Hz

Like most monitors, the XB271HU doesn't flicker and shows each image for a full frame. Without flicker, motion appears slightly smoother, but persistence blur is more visible. However, it is possible to use Black Frame Insertion (BFI) to add flicker and help reduce persistence blur, but only with 120Hz, 100Hz and 85 Hz inputs.

9.2 Refresh Rate
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What it is: How frequently the monitor can refresh and show new frames, and whether it can vary its refresh rate in real time using technologies like G-sync and FreeSync.
When it matters: Mostly for gaming, but does provide a little better motion during normal usage.
Native
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What it is: The frequency at which the monitor is capable of displaying images every second
When it matters: General usage, but better results are most important for gaming
Good value: >100 Hz
Noticeable difference: 15 Hz
:
144 Hz
Factory Overclock
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What it is: The frequency at which the monitor's can be boosted to using its internal menu.
When it matters: Gaming and other usages where high frame rate content is consumed.
Good value: >100
Noticeable difference: 15
:
165 Hz
Variable Refresh Rate
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What it is: Feature that allows the monitor to synchronize its refresh rate with the input device's output and reduces stuttering and screen tearing.
When it matters: Almost every usage, but is most noticeable in gaming where constant fluctuation in framerate cause distracting artifacts.
:
G-Sync
VRR Maximum
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What it is: The maximum frequency covered by the Variable Refresh Rate feature of the monitor.
When it matters: Any time the VRR feature is enabled.
Good value: Matches Refresh rate
Noticeable difference: 10 Hz
:
144 Hz
VRR Minimum
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What it is: The lowest frequency covered by the monitor's Variable Refresh Rate feature.
When it matters: When using the VRR feature of the monitor at lower frame rates.
Good value: 30 Hz
:
< 20 Hz
VRR Maximum With OC
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What it is: The maximum frequency covered by the Variable Refresh Rate feature when the monitor's overclocking feature is used.
When it matters: When both the overclocking and VRR features are used.
Good value: Matching the overclocked refresh rate.
Noticeable difference: 10 hz
:
165 Hz
VRR Supported Connectors : DisplayPort

The monitor has a high native refresh rate of 144Hz, which can be overclocked up to 165Hz. G-Sync on this monitor can adjust the screen's refresh rate to match the frame rate of a compatible graphics card, which allows playing graphically-intensive games with significant framerate drops without tearing or stuttering.

9.0

Inputs

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Score components:

The Predator has excellent low input lag, a high QHD resolution, and a large 27" screen, which are great for almost all usages.

9.4 Input Lag
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What it is: Delay between input and onscreen reaction.
When it matters: General usage of the mouse and gaming.
Native Resolution
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What it is: Lowest input lag possible at the center of the screen, when the monitor is displaying its native resolution at its native refresh rate.
When it matters: General usage and while playing video games.
Good value: < 15 ms
Noticeable difference: 5 ms
:
4.6 ms
Non-Native Resolution
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What it is: Lowest input lag possible at the center of the screen, when the monitor is displaying an alternative resolution at its native refresh rate.
When it matters: General usage as well as gaming.
Good value: < 15 ms
Noticeable difference: 5 ms
:
4.7 ms
Native Resolution @ 60 Hz
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What it is: Lowest input lag possible at the center of the screen, when the monitor is displaying its native resolution at a refresh rate of 60 Hz.
When it matters: General usage as well as gaming.
Good value: < 15 ms
Noticeable difference: 5 ms
:
12.7 ms
Variable Refresh Rate
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What it is: Lowest input lag possible at the center of the screen, when the monitor is using its Variable Refresh Rate feature at its native resolution.
When it matters: General usage as well as gaming.
Good value: < 15 ms
Noticeable difference: 5 ms
:
5.3 ms
HDR
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What it is: Lowest input lag possible at the center of the screen, when the monitor is displaying an HDR signal at its native resolution and refresh rate.
When it matters: General usage as well as gaming.
Good value: < 15 ms
Noticeable difference: 5 ms
:
N/A
Black Frame Insertion (BFI)
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What it is: Lowest input lag possible at the center of the screen, when BFI is enabled and the monitor is displaying a signal at the highest supported BFI refresh rate.
When it matters: General usage as well as gaming.
Good value: < 15 ms
Noticeable difference: 5 ms
:
11.0 ms

Excellent low input lag, mostly due to the fast scan time of 144 Hz. The 60 Hz input lag is much higher, as is the input lag with ULMB (BFI) enabled at 120 Hz, but both are still fairly low. The G-sync input lag is only slightly higher than the native input lag, which is great.

8.4 Resolution and Size
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What it is: The number of pixels the monitor can display, and the surface area of its screen.
When it matters: All usages, but especially for office and media editing.
Score components:
Native Resolution : QHD, 2560 x 1440
Aspect Ratio : 16:9
Megapixels : 3.7 MP
Pixel Density : 109 PPI
Screen Diagonal : 26.9 inches
Screen Area : 310 sq inches

The Predator has a high QHD resolution and a large 27" diagonal, giving it lots of screen space while still having good pixel density and detail.

Main Inputs
Other Inputs
Total Inputs
DisplayPort : 1 (DP 1.2)
Mini DisplayPort : No
HDMI : 1 (HDMI 1.4)
DVI : No
VGA : No
DisplayPort Out : No
USB : 2 (USB 3.0)
USB C : No
Analog Audio Out 3.5mm : 1
Microphone In 3.5mm : No
Digital Optical Audio Out : No
Analog Audio Out RCA : No

Features

The on-screen display of the XB271HU is fairly easy to use and allows adjusting many aspects of the monitor's performance such as picture mode, calibration, response time overshoot and the power LED.

Additional Features
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What it is: Additional features found on the monitor
Score components:
Speakers
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What it is: Whether or not the monitor features standalone speakers.
When it matters: When using your computer without headphones or a dedicated pair of speakers.
:
No
HDR10 : No

It is possible to add a central crosshair to the Predator through the on screen menu, with the 'Aim Point' option.

On-Screen Display (OSD)
Controls
Acer Predator XB271HU Controls picture

The controls are located on the bezel at the right of the monitor. They are quite easy to use and feel intuitive.

In The Box
Acer Predator XB271HU In The Box picture

  • Manual
  • HDMI Cable
  • USB Cable
  • DisplayPort Cable
  • 3 pin power cable

Conclusion
SEE PRICE
Amazon.com

7.7Mixed Usage
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Score components:
  • 30% Office
  • 30% Multimedia
  • 25% Gaming
  • 10% Media Creation
  • 5% HDR Gaming
Good monitor for a mixed usage. The Acer Predator XB271HU is a well-rounded display that is a safe choice for those looking for a screen to use with multiple types of tasks. Its wide viewing angle makes it easy to share with others, and its gaming performance is class leading. Unfortunately, though, its overall picture quality could be a bit better.
Very good monitor for office use. The XB271HU features an excellent stand with complete articulation making it easy to find a comfortable position. It offers a good amount of screen real-estate for productivity, and its wide viewing angle and rotating feature makes it powerful in a more communal working environment.
Remarkable gaming monitor. The Acer XB271HU's 144 Hz refresh rate, G-SYNC support and excellent motion blur provide an exceptional gaming experience. Input lag is low, and it even sports a flicker (BFI) feature to further enhance motion clarity. Its only downside is its average picture quality, which mostly an issue for darker viewing environments.
Decent monitor for consuming media. The Predator's excellent handling of motion and uniform screen make it a great choice for watching high-refresh rate content such as sports, but its low contrast and lack of HDR related features means its picture quality is only about average in a dark room.
The Acer XB271HU is a capable monitor for creating media. Its screen is uniform, and it is easily calibrated to track the s.RGB target almost perfectly. Unfortunately, though, it does not cover wide gamuts like Adobe RGB and DCI-P3, making it a bit limited for producing print and HDR content.
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Questions & Answers

2 ANSWERED QUESTIONS
2
Are you guys going to review the TN panel as well? Also do you recommend I use the ICC profile on my TN panel?
You can suggest new models to review on our suggestion page. We don't expect our ICC profile to be applicable to other monitors.
0
Since GSync has variable overshoot, is it possible to get response time graphs for different hertz such as 60, 100, 144 etc. with GSync on and off? I'm curious how much of a difference it makes. Thanks.

OD: Normal
144 Hz, G-Sync Off. 80% response time: 3.0 ms.
60 Hz, G-Sync Off. 80% response time: 4.0 ms.
144 Hz, G-Sync On, windowed mode. 80% response time: 3.0 ms.
60 Hz, G-Sync On, windowed mode. 80% response time: 4.0 ms.

Conclusions: The overdrive is significantly less strong in 60 Hz, resulting in less overshoot but a longer 80% response time; however the slower response time is hard to notice because 60 Hz has so much more persistence blur than 144 Hz, and the persistence blur masks the response time blur. G-Sync on vs off makes no difference, at least for windowed mode. We currently don't have a test for exclusive mode response time.

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