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Reviewed on May 28, 2018 , Eric Bousquet, Ian Cumming, Adam Babcock, Dimitris Katsaounis, Yannick Khong

Acer GN246HL
MONITOR REVIEW

Usage Ratings - Version 1.0

Test Benches:

  • 1.0: Fall 2017
6.5
Mixed Usage
Score components:
Size : 24 "
Resolution : 1920x1080
Refresh Rate : 144 Hz
LCD Type
What it is: Type of LCD technology used by the monitor.
When it matters: Different technologies have different viewing angle properties.
:
TN
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 GN246HL is a decent 1080p gaming monitor. It has a TN panel with decent picture quality when viewed from directly in front, but the viewing angles are very narrow so even at a slight angle the image looks washed out. It is also possible to flicker the backlight to clear up fast motion for gamers, but it doesn't support more advanced features like FreeSync.

Test Results
Design 7.0
Picture Quality 6.2
Motion 7.9
Inputs 8.0
Pros
  • 144Hz refresh rate feels smooth
  • Excellent response time
Cons
  • Picture deteriorates rapidly when viewed at an angle
  • Blacks are gray and blotchy when viewed in a dark room

Check Price

7.0

Design

Score components: Subjectively assigned
Acer GN246HL Design Picture
Curved : No
Curve radius : N/A
Weight (without stand) : 6.5lbs (2.9 kg)
Weight (with stand) : 7.5lbs (3.4 kg)

The design of the Acer GN246HL is basic with a good build quality. It's entirely made of plastic and does not feel high-end or look stylish. The stand supports the monitor well and there is no provision for cable management. Adjustment options are only limited to tilt, which can make it hard to position it into a comfortable viewing position or to rotate it for sharing. It is a very thin and lightweight monitor, allowing mobile professionals to set up an office pretty much anywhere.

Stand
Acer GN246HL Stand picture
Width : 10.0" (25.5 cm)
Depth : 7.3" (18.5 cm)

The X-shaped stand supports the monitor well. It has a fairly small footprint but feels sturdy.

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 GN246HL Ergonomics picture
Height Adjustment : N/A
Switch portrait/landscape : No
Swivel Range : N/A
Tilt Range : -15° to 5°

The ergonomic options are extremely limited. The tilt is the only adjustment available and it may be hard to position the monitor in a comfortable position.

Back
Acer GN246HL Back picture
Wall Mount : VESA 100x100

The rear of the monitor is quite plain. All the inputs are pointed outwards and there is no cable management.

Borders
Acer GN246HL Borders picture
Borders : 0.2" (0.4 cm)

The borders are made of plastic and have an average thickness.

Thickness
Acer GN246HL Thickness picture
Thickness (with stand) : 4.7" (12.0 cm)
Thickness (without stand) : 1.6" (4.1 cm)

Without the stand, the monitor is one of the thinnest we have tested so far.

7.0 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 GN246HL Build Quality picture

The build quality of the Acer GN246HL is okay. It is is almost entirely made of plastic, but does feel well constructed.

The picture quality of the Acer GN246HL is decent. The monitor can display great colors when calibrated properly, and as long as it is viewed from the front since the viewing angles are bad. The brightness is adequate for a bright room, but the black uniformity is disappointing and easily noticeable in dim environments, especially in dark scenes. Color bleeding and image retention are not an issue whereas you might notice some slight dark color banding. As a typical TN monitor, its contrast is okay but falls behind the performance of VA monitors. 

6.0 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 GN246HL 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
:
994 : 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 Acer GN246HL has a mediocre native contrast ratio, in line with other TN monitors. In dark environments, blacks look more like gray. However, when viewed in the presence of ambient light this is less noticeable.

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.
:
Direct

The Acer GN246HL does not have a local dimming feature. The video is for reference only.

8.2 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.
:
405 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
:
414 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
:
414 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.
:
413 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.
:
412 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.
:
412 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.
:
413 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.
:
412 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.
:
411 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.
:
411 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.
:
411 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
:
0.000

The SDR peak brightness of the Acer GN246HL is great. It is quite uniform as it doesn't change over time or with different screen content. It will keep you satisfied even in challenging environments.

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

The Acer GN246HL does not support HDR.

5.1 Horizontal Viewing Angle
What it is: Color accuracy when viewed from the side.
Acer GN246HL 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°
:
34 °
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°
:
21 °
Acer GN246HL 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°
:
53 °
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°
:
42 °
Acer GN246HL 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°
:
25 °
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°
:
13 °
Curve Radius : N/A

The horizontal viewing angle of the GN246Hl is poor. Red shades remain slightly more accurate when viewed at an angle, but the overall behavior is typical of a TN-type LCD monitor. Blacks get noticeably darker with slight moves off the center and picture quality diminishes significantly.

5.8 Vertical Viewing Angle
What it is: Color accuracy when viewed from the top or bottom.
Acer GN246HL 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°
:
9 °
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°
:
38 °
Acer GN246HL 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°
:
12 °
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°
:
42 °
Acer GN246HL 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°
:
21 °
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°
:
43 °

The vertical viewing angle is sub-par. When viewed from below, colors shift quickly and brightness diminishes fast. When looking from above, results are better. The picture is retained at ok levels for bigger angles and this will please those looking at the GN246HL while standing.

7.5 Gray Uniformity
What it is: Evenness of colors onscreen (not just gray).
When it matters: Solid colors. Sports, panning shots.
Score components:
Acer GN246HL 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%
:
7.878 %
50% DSE
What it is: Dirty Screen Effect. 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%
:
0.120 %
Acer GN246HL 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%
:
1.241 %
5% DSE
What it is: Dirty Screen Effect. High-frequency variance of uniformity. Dark spots on the screen.
When it matters: Dark scenes.
Good value: < 0.116%
:
0.073 %

The gray uniformity is good. Little clouding is noticeable and on the 50% gray picture. The image looks darker towards upper side in the photo. This is the result of the narrow viewing angles, which causes different sides of the screen to appear slightly different colors. However, this should not cause any issues when browsing the web or watching YouTube.

4.6 Black Uniformity
What it is: Evenness of blacks.
When it matters: Dark scenes viewed in a dark room.
Score components:
Acer GN246HL 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.
:
2.920 %
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

The black uniformity of this monitor is poor. Backlight bleed is evident all over the screen; any dark video content, or dark video game scenes when viewed in a dark room will not look good and black will look more like gray. However, if the monitor is used in brighter rooms such as an office where the dark content is more rare, this will not be an issue.

7.4 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 GN246HL Pre Calibration Picture Acer GN246HL Pre Gamma Curve Picture Acer GN246HL 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.
:
400 cd/m²
Luminance Settings
What it is: The luminance settings, often named 'Brightness' on monitors, usually range from 0 to 100.
:
100
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.
:
warm
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
:
6117 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
:
3.13
Color dE
What it is: Average inaccuracy of colors.
When it matters: All colors.
Good value: < 3
Noticeable difference: 1
:
3.10
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
:
2.28

Out of the box, the accuracy of the GN235HL monitor is decent when the picture mode is set to 'User'. The color temperature is a little warmer than our desired 6500K.

The monitor is missing a lot of blue in the lighter grayscale shade, whereas white balance dE is slightly higher than our 3.0 level, above which we expect most people to start noticing it. Finally gamma, is not far from our 2.2 target, but this is mainly due to the fact that the monitor is brighter in lower input signal values and darker in higher ones

The color accuracy of the monitor is a bit off at 3.1. For some people this might be noticeable.

9.2 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 GN246HL Post Calibration Picture Acer GN246HL Post Gamma Curve Picture Acer GN246HL 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.
:
114 cd/m²
Luminance Settings
What it is: The luminance settings, often named 'Brightness' on monitors, usually range from 0 to 100.
:
0
Contrast Setting
What it is: The monitor contrast setting, usually ranging from 0 to 100.
:
51
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.
:
98-97-99
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
:
6499 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
:
1.17
Color dE
What it is: Average inaccuracy of colors.
When it matters: All colors.
Good value: < 3
Noticeable difference: 1
:
1.16
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

The Acer GN246HL achieves near-perfect color results with a few corrections to the settings. Color Temperature is on Target and Color dE improves considerably. White balance is also almost unnoticeable. The gamma is pretty close to the target of 2.2.

You can download our ICC profile calibration here

8.5 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 GN246HL 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%
:
95.5 %
Acer GN246HL 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%
:
75.3 %

The Acer GN246HL has a great color gamut. The standard s.RGB color gamut is nearly fully covered, great for home use or for gaming. Coverage of the wider professional Adobe RGB color space is poor, and it is not recommended for professional use.

8.7 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 GN246HL 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
:
94.8 %
Acer GN246HL 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
:
79.5 %

Great color volume. The Acer GN246HL covers most of the more widely used s.RGB color space, but can't produce deep dark colors. Adobe RGB color volume is good, but limited by its Adobe RGB color gamut.

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

The Acer GN246HL does not support HDR, as such HDR Color 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

The Acer GN246HL does not support HDR, HDR Color Volumes are not supported.

10 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 GN246HL 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%
:
0.00 %
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%
:
0.00 %
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%
:
0.00 %
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%
:
0.00 %
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%
:
0.00 %
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%
:
0.00 %

There is no image retention and this is great!

7.8 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 GN246HL 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 gradient performance of the GN246HL monitor is good. Some 8 bit banding is visible, especially in the dark shades of colors. This should not be an issue in most cases.

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 GN246HL 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%
:
0.001 %
Acer GN246HL 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%
:
0.001 %

The Acer GN246HL does not produce any color bleed.

7.5 Reflections
What it is: How much light is reflected by the TV.
When it matters: Bright rooms.
Score components: Subjectively assigned
Acer GN246HL Average room Acer GN246HL Average room off picture Acer GN246HL Bright room off picture

The reflection handling is good. The light-matte finish diffuses specular reflections across the screen thus reducing their intensity. For most environments this is good, but in well lit rooms, reflections may be distracting.

7.9

Motion

Score components:

The Acer GN246HL has very good motion handling. There is very little motion blur due to the fast response time, but there is visible corona behind moving objects due to the pixel overshoot. This cannot be reduced as the pixel overdrive cannot be changed. The 246HL uses PWM to dim the backlight, as such there is flicker that is noticeable under certain circumstances. It supports a native refresh rate of 144Hz which is great for fast motion, but it is only supported when connected with DVI-DL.

9.5 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 GN246HL Motion Blur Picture Acer GN246HL 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
:
1.5 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
:
11.5 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.
:
N/A

The Acer GN246HL has an excellent native reponse time but there is a lot of overshoot which causes a visible corona effect to the left of the motion blur logo. Unfortunately, the overdrive is not customizable and the overshoot cannot be reduced.

4.4 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 GN246HL Backlight Picture
Flicker-free : No
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.
:
216 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
:
Yes
Acer GN246HL BFI Picture Acer GN246HL BFI Frequency Picture
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
:
120 Hz
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
:
100 Hz

The Acer GN246HL uses PWM to reduce the backlight, and there is flicker at all brightness levels.

There is an optional BFI mode that reduces the flicker frequency to improve motion with 3D content. This feature uses NVIDIA's 3D Lightboost technology. It is possible to modify the system to use this technology all the time. BlurBusters.com has an excellent article that covers how to activate BFI on a Lightboost monitor.

When activated there is a significant change to the color temperature (it is too warm) and this can't be changed. The contrast slider becomes 42 by default, and when raised colors are clipped. Since the BFI mode turns the backlight off for longer periods of time the overall brightness of the screen is significantly reduced to 121 cd/m². The contrast ratio is also reduced to 786 due to the change in colors and contrast slider. The contrast can be adjusted in BFI mode but causes more clipping.

8.0 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
:
144 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 GN246HL has a native refresh rate of 144 Hz but can only reach this refresh rate when connected with a DL-DVI connection. When connected with HDMI the maximum detected resolution is 60 Hz, but through custom resolutions this can be boosted to 76 Hz.

8.0

Inputs

Score components:

The Acer GN246HL has great low input lag, although it is at the high end for 144 Hz monitors. It has a 24" panel with a 1080p native resolution, which is good for this size but if you are used to 4k or 1440p monitors in larger sizes, you may find the resolution is too low. When connecting this display via HDMI, you will not be able to take full advantage of it. Unfortunately, it does not support DisplayPort, as such the best connector is DVI-DL, which is fairly standard on most recent PCs.

8.5 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
:
10.7 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
:
N/A
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
:
21.3 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
:
17.8 ms

BFI frequency tested: 120 Hz
Native Resolution @ 60 Hz via HDMI: 21.8 ms

Input lag was measured with DVI instead of HDMI, as the native 144 Hz refresh rate is only possible over DL-DVI.

Input lag is higher than most 144Hz monitors, but still very good. Non-native resolutions are supported, but the native 144 Hz refresh rate is only supported at 1080p. When selecting a non-native resolution, the graphics card will usually upscale the image to the native resolution, so most people won't notice this.

7.1 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 : FHD, 1920 x 1080
Aspect Ratio : 16:9
Megapixels : 2.1 MP
Pixel Density : 92 PPI
Screen Diagonal : 24.0 inches
Screen Area : 245 sq inches

The Acer 246HL has a decent 1080p resolution, which is fine for monitors of this size. It doesn't have the pixel density of 4k monitors or 1440p moniors typically found in larger sizes, but most people will find it works well.

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

The HDMI port can only output at 60 Hz, unless a custom resolution is used in which case it can reach 76 Hz. RGB full range is not detected properly over an HDMI cable, so it is better to use RGB limited or YCbCr 4:4:4.

There is a TRS audio out jack that can be used to output audio to an external speaker or headphones. It works best with an amplified device as the output doesn't get very loud.

Features

The Acer GN246HL has fairly basic features. The OSD is simple and easy to navigate, but there are limited options. It doesn't have built-in speakers and the controls are not very intuitive.

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.
:
No
HDR10 : No

The Acer GN246HL does not have built-in speakers, but there is an audio out jack that can be used to send sound to headphones or a speaker system. This is not very useful as audio can only be transmitted over HDMI, and this monitor does not support 144 Hz over HDMI.

The monitor uses NVIDIA's Lightboost technology, which when combined with NVIDIA's 3D Vision Kit can be used to display 3D images by flickering the backlight in sync with 3D glasses. It is also possible to enable the backlight flicker with normal content, as explained in the Image Flicker section.

On-Screen Display (OSD)
Acer GN246HL OSD picture

The OSD is quite limited, with only a few settings adjustments available.

Controls
Acer GN246HL Controls picture

There is an array of 5 controls on the bottom right of the screen, plus the power button. The buttons aren't labelled, but they are mapped to OSD commands that are displayed on screen. The controls aren't very intuitive and can be difficult to get used to. The buttons themselves don't travel very much and it isn't easy to tell when you actually pressed the button.

In The Box
Acer GN246HL In The Box picture

  • Instruction Manual and CD-ROM
  • DL-DVI Cable
  • VGA Cable
  • Power Adapter
  • AC Cable

Differences between Sizes and Variants

We tested the Acer GN246HL, which is a 24" 1080p TN monitor. It is also available in 27" (Acer GN276HL), and for the most part, we expect our review to be valid for both.

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
GN246HL 24" TN 1080p 144Hz
GN276HL 27" TN 1080p 144Hz

Compared to other Monitors

Acer GN246HL Group Shot Picture
Left: Acer G257HU. Middle: Acer GN246HL. Right: HP 22CWA
Unlike our other photographs, this picture wasn't taken under a controlled environment, so do not draw conclusions from it.

The Acer GN246HL is a basic 1080p monitor. It is decent for mixed usage, but there are better monitors in the same price range. See our recommendations for the best 144 Hz monitors and the best PC gaming monitors.

ASUS VG248QE

The ASUS VG248QE is significantly better than the Acer GN246HL The ASUS VG248QE has better ergonomics allowing you to place it as you like, and also has lower input lag, and better response time so it is much better for gaming. The faster response time creates a smaller image trail that is good for fast action gaming.

Dell U2515H

The Dell U2515H is more suitable for a room with wide seating. On the other hand, the Acer GN246HL is a very fast monitor with very good motion features. The Dell U2515H has better viewing angles and significantly better ergonomics so you can position it to your likings. Also, it has better resolution and marginally larger size, giving you more detail to work on. The Dell U2515H also has slightly better input lag which is great for gaming.

Dell P2417H

If you plan to do collaborative work, then the Dell P2417H is a better choice due to better viewing angles. On the other hand, the Acer GN246HL is a better choice if you sit right in front of the screen in a brighter room. The Dell P2417H has significantly better ergonomics that allow you to place it as you like. The Dell P2417H has better input lag and thus is more responsive which is great for gaming. The Acer GN246HL, on the other hand, is slightly brighter and has a faster response time with less blur and a better refresh rate of 144Hz.

Acer G257HU

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.

Acer XF251Q

The Acer XF251Q is much better than the Acer GN246HL. The GN246HL has a faster 144 Hz refresh rate, but it does not support any variable refresh rate technologies like FreeSync or G-Sync. The XF251Q has a 75 Hz refresh rate, but it supports FreeSync. The Acer GN246HL uses PWM to dim the backlight, and this causes flicker that may bother some people, whereas the XF251Q is flicker-free. Finally, the XF251Q has much less input lag, especially when gaming at 60 Hz.

HP 22CWA

If you will be watching the monitor from the side, the IPS panel of the HP 22CWA is a better choice as it has better viewing angles than the Acer GN246HL that has a TN panel. The HP has also better gray uniformity which improves picture quality, whereas the Acer has somewhat better motion blur and marginally better refresh rate, which is important to gamers.

LG 27UD58-B

The LG 27UD58-B is a better monitor for most people than the Acer GN246HL. The LG has a much wider viewing angle, but it isn't as bright as the GN246. Overall picture quality on the LG is better, and it is better at displaying large areas of similar color. The LG 27UD58 is a 4k monitor, making it a better choice for multitasking. Motion handling is very similar between the two, although the Acer GN246 has a higher refresh rate and less motion blur.

+ Show more

Conclusion
SEE PRICE
Amazon.com

6.5Mixed Usage
Score components:
The Acer GN246HL is a decent monitor for mixed usage. It is best suited for casual gaming. The lack of ergonomic features and poor viewing angle make it an okay choice for office use. It has a poor contrast ratio and poor black uniformity, and is best suited for a medium lit room without much glare.
Decent monitor for office usage. The native resolution and size are basic, many people will want a larger or higher resolution monitor. It has very limited ergonomic options, and it doesn't swivel or rotate so the screen can't easily be shared with neighbours.
Decent monitor for casual gaming. The high refresh rate helps motion look smooth. It has great low input lag, but it is higher than similar 144 Hz monitors. It doesn't support any adaptive sync technologies like AMD's Freesync. Late night gaming isn't as enjoyable due to the limited contrast and poor black uniformity.
Decent choice for multimedia use. Watching movies or TV shows on Netflix or YouTube will look good, but the 1080p resolution will be limiting to some users. Dark room performance isn't great with the limited contrast and poor black uniformity. The viewing angle is disappointing, so it isn't great for sharing clips with other people.
Decent monitor for media creation. The 1080p resolution and the lack of ergonomic options might be limiting to some. The poor coverage of the professional Adobe RGB color space makes it less than idea for professional users. Picture quality is decent, but the dark room performance isn't great and blacks are never truly black.
HDR is not supported. For HDR gaming, there aren't a lot of choices. The Samsung CHG70 is a good choice.

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