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Reviewed on Sep 04, 2018 , Simon Barbier, Yannick Khong

Acer G257HU / G7 Series
MONITOR REVIEW

Usage Ratings - Version 1.0

Test Benches: test

  • 1.0: Fall 2017
6.8
Mixed Usage
Score components:
  • 30% Office
  • 30% Multimedia
  • 25% Gaming
  • 10% Media Creation
  • 5% HDR Gaming
Size : 25 "
Resolution : 2560x1440
Refresh Rate : 60 Hz
LCD Type
What it is: Type of LCD technology used by the monitor.
When it matters: Different technologies have different viewing angle properties.
:
IPS
Variable Refresh Rate
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.
:
No

The Acer G257HU is a decent 1440p IPS monitor with decent picture quality and great peak brightness. The IPS display delivers good viewing angles but has very bad black uniformity. It has excellent low input lag, but gamers will be disappointed by the limited 60Hz refresh rate and lack of VRR.

Test Results
Design 6.0
Picture Quality 6.2
Motion 7.1
Inputs 8.7
Pros
  • Picture remains accurate when viewed at an angle
  • Great response time
Cons
  • Terrible black uniformity
  • Stand has bad ergonomics
  • Temporary image retention could be distracting

Check Price

6.0

Design

Score components: Subjectively assigned
Acer G257HU Design Picture
Curved : No
Curve radius : N/A
Weight (without stand) : N/A
Weight (with stand) : 7.2lbs (3.3 kg)

The Acer G257HU has a mediocre design. The stand cannot be removed, and unlike most monitors currently on the market, it cannot be VESA mounted. The stand is extremely basic, and has bad ergonomics. It has a narrow tilt range but cannot swivel and there is no height adjustment.

Stand
Acer G257HU Stand picture
Width : 10.0" (25.5 cm)
Depth : 7.3" (18.5 cm)

The stand supports the monitor well, but it has a large footprint and cannot be removed. The stand creaks when moved or adjusted and does not seem well built.

1.2 Ergonomics
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:
  • 46% Height Adjustment
  • 18% Switch portrait/landscape
  • 18% Swivel Range
  • 18% Tilt Range
Acer G257HU Ergonomics picture
Height Adjustment : N/A
Switch portrait/landscape : No
Swivel Range : N/A
Tilt Range : -15° to 5°

Bad ergonomics. There is no height adjustment, and it doesn't swivel. There is a very limited tilt range.

Back
Acer G257HU Back picture
Wall Mount : N/A

Very plain back. The Acer G257HU cannot be VESA mounted, and there is no cable management.

Borders
Acer G257HU Borders picture
Borders : 0.3" (0.8 cm)

There is no gap between the bezel and the screen. The borders are not distractedly large, but they aren't thin either.

Thickness
Acer G257HU Thickness picture
Thickness (with stand) : 4.5" (11.5 cm)
Thickness (without stand) : 1.6" (4.1 cm)

The monitor looks good from the side. The stand prohibits the monitor from being placed too close to the wall.

6.0 Build Quality
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 G257HU Build Quality picture

Mediocre build quality. While there are no major issues with the build, there is nothing that stands out either.

The Acer G257HU delivers mediocre picture quality. It has a decent contrast ratio, great peak brightness, and  good horizontal viewing angles. Colors are accurately reproduced once calibrated and it has excellent coverage of the smaller s.RGB color space, but limited coverage of the wider Adobe RGB color space, which is disappointing for professional users in the print and marketing industries. Unfortunately, it has bad black uniformity and doesn't support HDR, nor does it have a local dimming feature. It also shows signs of temporary image retention, even 10 minutes after our test clip ended.

6.6 Contrast
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 G257HU Checkerboard Picture
Native Contrast
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
:
1422 : 1
Contrast with local dimming
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 G257HU has a decent contrast ratio that is above average for an IPS monitor. The only IPS monitors that perform better are the HP V320 and the LG 34UC79G-B.

0 Local Dimming
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
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
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 G7 Series G257HU does not have local dimming. The above video is for reference only.

8.0 SDR Peak Brightness
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
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.
:
351 cd/m²
SDR Peak 2% Window
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
:
361 cd/m²
SDR Peak 10% Window
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
:
366 cd/m²
SDR Peak 25% Window
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.
:
365 cd/m²
SDR Peak 50% Window
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.
:
365 cd/m²
SDR Peak 100% Window
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.
:
364 cd/m²
SDR Sustained 2% Window
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.
:
360 cd/m²
SDR Sustained 10% Window
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.
:
365 cd/m²
SDR Sustained 25% Window
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.
:
364 cd/m²
SDR Sustained 50% Window
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.
:
363 cd/m²
SDR Sustained 100% Window
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.
:
363 cd/m²
SDR ABL
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
:
0.001

Very good peak brightness in SDR, very similar to the ASUS VG248QE. There is very little variation in brightness across window sizes.

0 HDR Peak Brightness
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.

7.5 Horizontal Viewing Angle
What it is: Color accuracy when viewed from the side.
Acer G257HU Horizontal Color Shift Picture
Color Shift from Left
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°
:
42 °
Color Shift from Right
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°
:
42 °
Acer G257HU Horizontal Brightness Picture
Brightness from Left
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°
:
50 °
Brightness from Right
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°
:
49 °
Acer G257HU Horizontal Black Level Picture
Black Level from Left
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
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

Very good horizontal viewing angles. The image doesn't degrade when viewed at an angle, which is good for sharing your work with a colleague, and the edges don't fade when sitting close to the screen either.

6.2 Vertical Viewing Angle
What it is: Color accuracy when viewed from the top or bottom.
Acer G257HU Vertical Color Shift Picture
Color Shift from Below
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°
:
26 °
Color Shift from Above
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°
:
29 °
Acer G257HU Vertical Brightness Picture
Brightness from Below
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°
:
35 °
Brightness from Above
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°
:
36 °
Acer G257HU Vertical Black Level Picture
Black Level from Below
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°
:
20 °
Black Level from Above
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°
:
24 °

Mediocre vertical viewing angles, which can be a problem as the stand has very little adjustments, so it is harder to be in an optimal vertical viewing position.

8.7 Gray Uniformity
What it is: Evenness of colors onscreen (not just gray).
When it matters: Solid colors. Sports, panning shots.
Score components:
Acer G257HU 50% Uniformity Picture
50% Std. Dev.
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%
:
2.552 %
50% DSE
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%
:
0.115 %
Acer G257HU 5% Uniformity Picture
5% Std. Dev.
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%
:
0.494 %
5% DSE
What it is: High-frequency variance of uniformity. Dark spots on the screen.
When it matters: Dark scenes.
Good value: < 0.116%
:
0.055 %

Excellent gray uniformity. There are some brighter spots in the center but these shouldn't be too distracting.

1.8 Black Uniformity
What it is: Evenness of blacks.
When it matters: Dark scenes viewed in a dark room.
Score components:
Acer G257HU Native Black Uniformity Picture
Native Std. Dev.
What it is: Average of the squared difference of the blacks.
When it matters: Dark scenes viewed in a dark room.
Good value: <2%
Noticeable difference: 1%, but keep in mind that it varies a lot by unit, even of the same model; yours likely will not end up exactly like ours.
:
4.782 %
Std. Dev. w/ L.D.
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.
Good value: <2%
Noticeable difference: 1%, but keep in mind that it varies a lot by unit, even of the same model; yours likely will not end up exactly like ours.
:
N/A

Bad black uniformity. While IPS monitors typically have bad uniformity, this is worse than most. Only the HP 22CWA and LG 29UM69G-B are worse. There is noticeable backlight bleed and flashlighting is a major issue. This is not a good monitor for dark room use.

5.4 Pre Calibration
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 G257HU Pre Calibration Picture Acer G257HU Pre Gamma Curve Picture Acer G257HU Pre Color Picture
Picture Mode
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
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.
:
297 cd/m²
Luminance Settings
What it is: The luminance settings, often named 'Brightness' on monitors, usually range from 0 to 100.
:
75
Contrast Setting
What it is: The monitor contrast setting, usually ranging from 0 to 100.
:
50
RGB controls
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
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
:
6052 K
White Balance dE
What it is: Average inaccuracy of shades of gray.
When it matters: Overall color temperature of all video.
Good value: < 3
Noticeable difference: 1
:
4.66
Color dE
What it is: Average inaccuracy of colors.
When it matters: All colors.
Good value: < 3
Noticeable difference: 1
:
4.78
Gamma
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
:
1.9

Disappointing color accuracy out of the box. The most accurate picture mode is 'User -> User'. The gamma curve does not follow our target at all, and most scenes are significantly darker than they should be. White balance is significantly higher than our threshold of 3 and it is noticeable to most people even when browsing the web. Colors are just as bad.

9.6 Post Calibration
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 G257HU Post Calibration Picture Acer G257HU Post Gamma Curve Picture Acer G257HU Post Color Picture
Picture Mode
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
What it is: The luminance at which the calibration was executed. We aim for a luminance level of 100 cd/m².
:
101 cd/m²
Luminance Settings
What it is: The luminance settings, often named 'Brightness' on monitors, usually range from 0 to 100.
:
18
Contrast Setting
What it is: The monitor contrast setting, usually ranging from 0 to 100.
:
50
RGB controls
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.
:
98-100-99
Color Temperature
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
:
6463 K
White Balance dE
What it is: Average inaccuracy of shades of gray.
When it matters: Overall color temperature of all videos.
Good value: < 3
Noticeable difference: 1
:
0.62
Color dE
What it is: Average inaccuracy of colors.
When it matters: All colors.
Good value: < 3
Noticeable difference: 1
:
0.52
Gamma
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
:
2.18

After calibration, the Acer G7 Series G257HU has excellent accuracy. Color and White Balance dEs are much closer to the target, and most people won't be able to tell the difference. The gamma curve is almost perfectly corrected.

We chose the 'User' picture mode, as it provides the most control over the settings.

You can download our ICC profile calibration here.

8.7 SDR Color Gamut
What it is: The palette of colors the monitor can display
When it matters: General content consumption or production
Score components:
Acer G257HU Color Gamut s.RGB Picture
s.RGB xy
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%
:
98.5 %
Acer G257HU Color Gamut ARGB Picture
Adobe RGB xy
What it is: Coverage of the Adobe RGB colorspace on CIE 1931 xy.
When it matters: Professional photography.
Good value: > 90%
Noticeable difference: 5%
:
75.8 %

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

Excellent coverage of the s.RGB color gamut, which is great for daily usage, but professional users in the print and publishing industries will be disappointed by the limited Adobe RGB coverage. The 'Graphics' picture mode did not improve the color gamut coverage.

8.8 SDR Color Volume
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 G257HU s.RGB Color Volume ITP picture
s.RGB in ICtCp
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
:
94.7 %
Acer G257HU Adobe RGB Color Volume ITP Picture
Adobe RGB in ICtCp
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
:
80.7 %

sRGB Picture Mode: User
Adobe RGB Picture Mode: User

Excellent color volume. Most of the gaps in the color volume are due to the gaps in the color space. The limited contrast ratio limits the G257HU's ability to produce deep, dark colors.

0 HDR Color Gamut
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
What it is: Whether the monitor can support wider color gamuts
When it matters: HDR content and media creation
:
No
DCI P3 xy
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
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
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
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
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.

1.3 Image Retention
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 G257HU Image Retention Picture
IR after 0 min recovery
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%
:
0.54 %
IR after 2 min recovery
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%
:
0.54 %
IR after 4 min recovery
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%
:
0.35 %
IR after 6 min recovery
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%
:
0.29 %
IR after 8 min recovery
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%
:
0.14 %
IR after 10 min recovery
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%
:
0.09 %

The Acer G257HU shows signs of image retention, even after a 10 minute cooldown from our test clip.

7.3 Gradient
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 G257HU Gradient Picture
Color Depth
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

The Acer G257HU has one of the worst gradient performance that we have measured. There is 8 bit banding in all colors.

10 Color Bleed
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 G257HU Color bleed horizontal
Pixel row error
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 G257HU Color bleed vertical
Pixel column error
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%
:
0.000 %

Perfect color control, there is no bleed between pixels.

7.5 Reflections
What it is: How much light is reflected by the TV.
When it matters: Bright rooms.
Score components: Subjectively assigned
Acer G257HU Average room Acer G257HU Average room off picture Acer G257HU Bright room off picture

Good reflection handling, similar to most monitors we have tested. The screen remains clear with a decent amount of ambient light but can't overcome strong glare in a bright room.

7.1

Motion

Score components:

The Acer G257HU has decent motion handling. It has a great response time, so motion is clear without much blur. The backlight is flicker-free, which is great, but it doesn't have any option to introduce flicker to further clear up motion. The standard 60Hz refresh rate is fine for most uses but gamers might find it too low and it doesn't support FreeSync or G-SYNC.

8.4 Motion Blur
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 G257HU Motion Blur Picture Acer G257HU Response Time Chart
80% Response Time
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
:
6.0 ms
100% Response Time
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
:
13.9 ms
Best Overdrive Setting
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.
:
Off

OD Off
OD Normal
OD Extreme

The Acer G257HU has a great fast response time, slightly better than the Dell P2417H. The best setting is with OD 'Off', as 'Normal' and 'Extreme' introduce a lot of overshoot but don't help the response time. With the 'off' setting there is no overshoot in any of the transitions.

7.5 Image Flicker
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 G257HU Backlight Picture
Flicker-free : Yes
PWM Dimming Frequency
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)
What it is: Option to turn screen black between frames
When it matters: Reduces eye tracking blur in motion
Good value: Yes
:
No
BFI Maximum Frequency
What it is: Highest possible frequency of flickering pattern
When it matters: Reduces eye-tracking blur in motion
Good value: Matches the native refresh rate
Noticeable difference: 20 Hz
:
N/A
BFI Minimum Frequency
What it is: Lowest possible frequency of flickering pattern
When it matters: Reduces eye-tracking blur in motion
Good value: 60 Hz
Noticeable difference: 20 Hz
:
N/A

The G7 G257HU smidpx is flicker-free and uses DC dimming to dim the backlight, so there are no duplications in moving objects. It can't introduce flicker to reduce motion blur.

6.7 Refresh Rate
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
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
:
60 Hz
Factory Overclock
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
:
N/A
Variable Refresh Rate
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.
:
No
VRR Maximum
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
:
N/A
VRR Minimum
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
:
N/A
VRR Maximum With OC
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
:
N/A
VRR Supported Connectors : N/A

The Acer G257HU does not support a variable refresh rate.

8.7

Inputs

Score components:

The G257HU has excellent low input lag, about as good as it can get for a 60 Hz monitor. The native 1440p resolution is great for most uses, given the size of the screen. It has a good selection of input types, but unfortunately only 1 of each.

9.0 Input Lag
What it is: Delay between input and onscreen reaction.
When it matters: General usage of the mouse and gaming.
Native Resolution
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
:
8.4 ms
Non-Native Resolution
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. The non-native resolution tested depends on the native resolution of the monitor, following this pattern unless otherwise specified in the Input Lag text:

Native Resolution Non-Native Resolution Tested
4k UHD QHD
QHD FHD
FHD 1600x900
3440x1440 2560x1080
2560x1080 1920x1080
When it matters: General usage as well as gaming.
Good value: < 15 ms
Noticeable difference: 5 ms
:
8.6 ms
Native Resolution @ 60 Hz
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
:
8.4 ms
Variable Refresh Rate
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
:
N/A
HDR
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)
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
:
N/A

Excellent low input lag, one of the lowest of any 60Hz monitor we have tested. It is consistent across any input resolution, great for gaming at a lower resolution.

8.3 Resolution and Size
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 : 118 PPI
Screen Diagonal : 25.0 inches
Screen Area : 266 sq inches

The QHD resolution is great for this size of screen. The resolution is high enough that individual pixels aren't noticeable.

Inputs
Total Inputs
DisplayPort : 1 (DP 1.2)
Mini DisplayPort : No
HDMI : 1 (HDMI 1.4)
DVI : 1 (DVI-D, dual link)
VGA : No
DisplayPort Out : No
USB : No
USB C : No
Analog Audio Out 3.5mm : 1
Microphone In 3.5mm : 1
Digital Optical Audio Out : No
Analog Audio Out RCA : No

There is a headphone out port with adjustable volume. This is decent for connecting speakers or headphones to your monitor, but the DAC might cause some loss in sound quality compared to if you connected your speakers directly to your computer.

Features

The Acer G257HU has a very limited set of features. The On-Screen Display and controls are not very intuitive and can be hard to navigate. It doesn't have any USB charging ports or additional features.

Additional Features
What it is: Additional features found on the monitor
Score components:
Speakers
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.
:
Yes
HDR10 : No

This monitor has a limited set of features. There are internal speakers, and a 3.5mm output to connect external speakers or headphones. It doesn't support HDR and has no USB charging ports.

On-Screen Display (OSD)
Acer G257HU OSD picture

Changing some of the settings causes the brightness to reset back to the maximum setting.

Controls
Acer G257HU Controls picture

The controls are not very intuitive, and the buttons themselves are quite small so it can get some getting used to.

In The Box
Acer G257HU In The Box picture

  • HDMI Cable
  • DisplayPort Cable
  • 3.5mm to 3.5mm cable
Not shown:
  • Power Cable

Differences between Sizes and Variants

We tested the Acer G257HU, which is a 25" 1440p monitor. 

If someone comes across a different type of panel or if their monitor doesn't correspond to our review, let us know and we will update the review. Note that some tests such as the gray uniformity may vary between individual units.

Model Size Panel Type Resolution Native Refresh
G247HYL 24" IPS 1080p 60Hz
G257HU 25" IPS 1440p 60Hz
G257HL 25 IPS 1080p 60Hz

Our G257HU was manufactured in Feb. 2017.

Compared to other Monitors

Acer G257HU Group Shot Picture
Left: LG 29UM69G-B. Middle: Acer G257HU. Right: Asus VG248QE
Unlike our other photographs, this picture wasn't taken under a controlled environment, so do not draw conclusions from it.

The Acer G257HU is a decent 1440p IPS monitor, but there are better choices out there that are much cheaper.

Dell U2515H

The Dell U2515H is much better than the Acer G257HU. The design of the U2515H is far superior, with far more ergonomic adjustments as well as VESA mounting ports. The U2515H has much better gradient handling with less banding, and is free of distracting temporary image retention. The U2515H also has better features, including the ability to daisy chain to another monitor, as well as USB charging ports.

ASUS VG248QE

The ASUS VG248QE is better than the Acer G257HU. The VG248QE has a higher refresh rate that delivers a nearly instantaneous response time, and the backlight can introduce flicker to further reduce motion blur. The VG248QE has lower input lag, great for gaming. The Acer G257HU has a higher native resolution, but at this size, this doesn't have a significant impact on the overall quality.

Acer GN246HL

The Acer G257HU is better than the GN246HL. They both deliver similar overall picture quality, but the G257HU has wider viewing angles. The G257HU has a flicker free backlight. The Acer GN246HL has a higher refresh rate and better response time, great for gaming.

ASUS VG245H

The ASUS VG245H is somewhat better than the Acer G257HU. The ASUS has a much better design, with a stand that can be easily adjusted to an optimal viewing position. The Acer G257HU is a bit brighter and has better wide viewing angles. The VG245H has a faster response time and produces clearer motion with less blur, and supports FreeSync VRR for gaming.

Conclusion
SEE PRICE
Amazon.com

6.8Mixed Usage
Score components:
  • 30% Office
  • 30% Multimedia
  • 25% Gaming
  • 10% Media Creation
  • 5% HDR Gaming
Decent monitor for mixed usage. It has an excellent contrast ratio, but very bad black uniformity so it isn't a good choice for a dim room. The stand is mediocre and has almost no ergonomic adjustments, and it can't be VESA mounted. The IPS panel delivers good viewing angles and excellent gray uniformity.
Decent monitor for use in an office setting. It has wide viewing angles and a high 1440p resolution, good for multitasking or sharing your work with others. The stand is mediocre and has very few adjustments so it is hard to place it in an ideal viewing position. Great peak brightness and good reflection handling make it a good choice for a brighter room.
This is a decent monitor for gaming. It has decent motion handling, with a great response time and no flicker. It has excellent low input lag, but gamers might find the 60 Hz refresh rate too low and will be disappointed by the lack of FreeSync or G-Sync. The 1440p resolution is a great balance of higher detail without needed a top-end graphics card for most games.
Decent for watching videos and movies as long as you are in a bright room due to the horrible black uniformity. It has good viewing angles and good reflection handling, so you can easily share a video with multiple people.
Decent monitor for creating media. The 1440p resolution makes it easier to multitask or to see more of high-resolution files. It has excellent color accuracy once calibrated, and good coverage of the s.RGB color space, but professionals in media creation fields will find the Adobe RGB coverage too limiting.
The Acer G7 Series G257HU does not support HDR.

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