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Reviewed on Mar 07, 2018 , Ian Cumming, Mehdi Azzabi, Martin Leduc, Eric Bousquet

AOC AGON AG271QX
MONITOR REVIEW

Usage Ratings - Version 1.0

Test Benches:

  • 1.0: Fall 2017
7.5
Mixed Usage
Score components:
Size : 27 "
Resolution : 2560x1440
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.
:
FreeSync

The AOC AG271QX is a good 2560x1440 gaming monitor with a high 144Hz refresh rate and TN panel. It has excellent motion handling due to the fast response time and support for FreeSync. It also has very low input lag which is excellent. Unfortunately, the picture quality is below average and when viewed from up close, the edges of the screen lose accuracy due to the narrow viewing angle.

Test Results
Design 8.5
Picture Quality 6.3
Motion 9.1
Inputs 9.0
Pros
  • 144Hz refresh rate feels very responsive
  • Input lag is excellent
Cons
  • Edges of the screen appear nonuniform due poor viewing angle
  • Low native contrast ratio

Check Price

8.5

Design

Score components: Subjectively assigned
AOC AGON AG271QX Design Picture
Curved : No
Curve radius : N/A
Weight (without stand) : 8.6lbs (3.9 kg)
Weight (with stand) : 14.6lbs (6.6 kg)

The design of the AOC AGON AG271QX is excellent. The monitor looks sleek from any angle, and the low profile V-shaped stand supports it well. It is very easy to adjust orientation or height for comfort, and the hook for hanging headphones adds extra convenience. The monitor does stick out a bit from the stand though, so it can't be placed very close to a wall. The build quality feels great due to the quality metal parts. 

Stand
AOC AGON AG271QX Stand picture
Width : 20.6" (52.2 cm)
Depth : 8.6" (21.9 cm)

The V-shaped stand feels very sturdy and supports the monitor very well. It also has a low profile and a hole through the center for cable management.

7.6 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
AOC AGON AG271QX Ergonomics picture
Height Adjustment : 5.1" (12.9 cm)
Switch portrait/landscape : Yes
Swivel Range : -20° to 20°
Tilt Range : -20° to 2.5°

The monitor height can be adjusted easily and a marker allows making a note of a specific height, which is nice. The monitor can rotate portrait, tilt, and swivel.

Back
AOC AGON AG271QX Back picture
Wall Mount : VESA 100x100

The rear of the monitor has a stylish two-tone finish. It looks good and stands out. There is a headphone hook too which rotates out from behind the right-hand side of the monitor.

Borders
AOC AGON AG271QX Borders picture
Borders : 0.6" (1.4 cm)

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

Thickness
AOC AGON AG271QX Thickness picture
Thickness (with stand) : 6.4" (16.2 cm)
Thickness (without stand) : 2.6" (6.7 cm)

The AOC AGON AG271QX sticks quite far out when placed on the stand. However, the monitor itself has an average thickness and looks good from the side.

8.0 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
AOC AGON AG271QX Build Quality picture

The build quality is great. The metal stand is quite heavy but feels high quality and the build quality of the monitor certainly won't be an issue in normal use.

The picture quality of the AOC AG271QX is decent. It has a TN panel, resulting in a low native contrast ratio so blacks appear gray in a dark room and the image degrades rapidly when viewed at an angle. Thankfully, it gets quite bright to fight reflections and also has a good light-matte finish. This helps to overcome ambient glare and direct reflections, which is good for a bright room. Unfortunately, it doesn't support some more advanced features, such as local dimming and HDR, to improve the picture quality further. However, support for these advanced features is rare.

6.1 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:
AOC AGON AG271QX 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
:
1042 : 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 contrast ratio of the AOC AG271QX is below average, as expected for a monitor with a TN panel. When viewed in a dark room, blacks appear gray.

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 AOC AGON AG271QX monitor does not have a local dimming feature. The 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.
:
347 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
:
350 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
:
350 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.
:
350 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.
:
350 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.
:
350 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.
:
350 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.
:
350 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.
:
350 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.
:
350 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.
:
350 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 peak brightness is great and doesn't depend on the window size so all content looks equally bright.

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.

5.7 Horizontal Viewing Angle
What it is: Color accuracy when viewed from the side.
AOC AGON AG271QX 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°
:
29 °
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°
:
28 °
AOC AGON AG271QX 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°
:
46 °
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°
:
43 °
AOC AGON AG271QX 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°
:
53 °
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°
:
28 °
Curve Radius : N/A

The horizontal viewing angle is poor but fairly typical for a TN panel. When viewed from even a small horizontal displacement, the contrast drops dramatically due to the raising black level and drop off of brightness. All of the colors shift also. When viewed from up close, the sides of the monitor appear washed out.

4.9 Vertical Viewing Angle
What it is: Color accuracy when viewed from the top or bottom.
AOC AGON AG271QX 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°
:
31 °
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°
:
8 °
AOC AGON AG271QX 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°
:
34 °
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°
:
14 °
AOC AGON AG271QX 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°
:
26 °
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°
:
18 °

The vertical viewing angle of this AOC AG271QX monitor is bad. This is as expected with a TN panel, however, it results in a non-uniform screen due to the different angle to each point on the screen when viewed from up close.

7.9 Gray Uniformity
What it is: Evenness of colors onscreen (not just gray).
When it matters: Solid colors. Sports, panning shots.
Score components:
AOC AGON AG271QX 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%
:
5.583 %
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%
:
0.111 %
AOC AGON AG271QX 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%
:
1.606 %
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%
:
0.076 %

The gray uniformity of the AOC AG271QX is very good, which is great for browsing web-pages or playing media or sports without any dirty screen effect. The uniformity issues visible in the photo are a result of the narrow viewing angles, which causes different sides of the screen to appear slightly different colors.

The dark gray (5%) gray uniformity is even better, and shouldn't cause issues when viewing dark scenes.

6.1 Black Uniformity
What it is: Evenness of blacks.
When it matters: Dark scenes viewed in a dark room.
Score components:
AOC AGON AG271QX 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.
:
1.938 %
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 below average. This results in dark games or movies appearing blotchy. The sides are also a bit darker than the center, and the top appears a bit darker than the bottom. This is in part due to the poor viewing angle.

6.6 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:
AOC AGON AG271QX Pre Calibration Picture AOC AGON AG271QX Pre Gamma Curve Picture AOC AGON AG271QX 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.
:
Standard
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.
:
317 cd/m²
Luminance Settings
What it is: The luminance settings, often named 'Brightness' on monitors, usually range from 0 to 100.
:
90
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.
:
50-50-50
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
:
6130 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
:
3.81
Color dE
What it is: Average inaccuracy of colors.
When it matters: All colors.
Good value: < 3
Noticeable difference: 1
:
3.67
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
:
1.99

Out of the box and with the 'Standard' picture mode, the monitor has a below average accuracy. The white balance dE and color dE are both between 3.5 and 4, which at this level of inaccuracy, is noticeable for most enthusiasts out there. The gamma is also well under our 2.4 target that we aim for and the curve is not tracking closely at all our target curve, as you can see on the gamma picture.

If you don't really intend to calibrate your monitor, the AOC AG271QX does not really have 'Picture Mode' per say, but instead many 'Eco Mode' and 'Color Temp.' settings. The best 'Eco Mode' setting is the 'Standard' mode since only this mode gives you control over the 'Contrast' and 'Brightness' settings. For the 'Color Temp.' setting, you can choose from many color temperature available and select the one that you feel is the best for you. If you want to have manual control over the each of the RGB value, then you will need to set it to 'User'.

9.1 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:
AOC AGON AG271QX Post Calibration Picture AOC AGON AG271QX Post Gamma Curve Picture AOC AGON AG271QX 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.
:
Standard
Luminance
What it is: The luminance at which the calibration was executed. We aim for a luminance level of 100 cd/m².
:
98 cd/m²
Luminance Settings
What it is: The luminance settings, often named 'Brightness' on monitors, usually range from 0 to 100.
:
20
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.
:
40-51-52
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
:
6380 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
:
1.27
Color dE
What it is: Average inaccuracy of colors.
When it matters: All colors.
Good value: < 3
Noticeable difference: 1
:
1.31
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 the calibration process, the AOC AGON AG271QX has an excellent accuracy. The white balance dE was brought down to 1.27 and the color dE was brought down to 1.31. This level of inaccuracy is mostly perceivable by professionals who are used to work with a calibrated monitor and should be good for most enthusiasts. The gamma is now more close to our 2.4 target and the curve is also tracking our target curve much more closely than before.

You can download our ICC profile calibration here.

8.6 SDR Color Gamut
What it is: The palette of colors the monitor can display
When it matters: General content consumption or production
Score components:
AOC AGON AG271QX 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%
:
94.7 %
AOC AGON AG271QX 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%
:
76.6 %

Good color gamut. While the monitor cannot cover the standard s.RGB gamut completely, it reproduces enough of it to display saturated colors and relatively accurate content. Its Adobe RGB coverage is a bit limited though, so it isn't the best choice for more 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:
AOC AGON AG271QX 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
:
94.6 %
AOC AGON AG271QX 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
:
79.2 %

The AOC Agon AG271QX is able to fill most of the sRGB color volume. It isn't able to cover deep blacks or dark colors due to the low native contrast ratio but otherwise performs well. In the wider Adobe RGB color space, it isn't able to reproduce the more saturated colors, especially in the green areas.

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 as the monitor only supports SDR.

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 as the monitor doesn't support HDR.

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.
AOC AGON AG271QX 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 %

No signs of image retention are visible on this AOC AG271QX monitor, which is excellent.

9.9 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
AOC AGON AG271QX 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.
:
10 Bit

The monitor is able to display 10 bit gradients very smoothly, which is excellent. Almost no issues can be seen in the gradient.

9.3 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:
AOC AGON AG271QX 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 %
AOC AGON AG271QX 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%
:
0.141 %

The AOC AG271QX has no major issues with bleeding of colors.

7.5 Reflections
What it is: How much light is reflected by the TV.
When it matters: Bright rooms.
Score components: Subjectively assigned
AOC AGON AG271QX Average room AOC AGON AG271QX Average room off picture AOC AGON AG271QX Bright room off picture

This monitor is good at handling reflections with a light matte finish that helps to diffuse direct reflections across the screen and reduce their intensity. It is good enough for most rooms but may be an issue for bright rooms.

9.1

Motion

Score components:

The motion handling of the AOC Agon AG271QX is excellent. It has an amazing response time, which results in very short trails following moving objects. It uses DC dimming, so the screen is flicker-free, but unfortunately, BFI cannot be enabled to clear up motion. The monitor has a high native refresh rate of 144Hz and can use FreeSync to display variable frame rates lower than its native refresh rate when used with a compatible video card.

9.7 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:
AOC AGON AG271QX Motion Blur Picture AOC AGON AG271QX 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
:
3.5 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
:
8.2 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.
:
Medium

Overdrive Off
Overdrive Weak
Overdrive Medium
Overdrive Strong

The AOC AG271QX has an extremely fast response time, which is excellent when viewing fast-paced content such as first person shooters. This results in no visible blur trailing following moving objects, with almost all of the blur in the photo above as a result of image persistence. Pixel transition speed can be modified by changing the 'Overdrive' setting. We recommend using the 'Medium' setting for fast response without overshoot, but the 'Strong' setting is slightly faster, so you can use it if you don't mind small pixel overshoot artifacts appearing as lighter trails following moving objects.

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
AOC AGON AG271QX 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

Like most monitors, the AOC Agon AG271QX doesn't flicker and instead, shows each image for a full frame. The absence of flicker makes motion appear slightly smoother but results in some persistence blur as objects are followed between frames. It is not possible to use Black Frame Insertion (BFI) to add flicker and help reduce persistence blur. This is unfortunate as flicker is useful to clear up motion even further with fast paced content, such as action or fighting games.

9.2 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.
:
FreeSync
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
:
144 Hz
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
:
< 20 Hz
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 : DisplayPort, HDMI

The monitor has a high native refresh rate of 144Hz. Freesync on this monitor can adjust the screen's refresh rate to match the frame rate of a compatible graphics card, which allows playing graphically-intensive games with significant framerate drops without tearing or stuttering. This is one of the best 144 Hz monitors we've reviewed in 2018.

9.0

Inputs

Score components:

The monitor has excellent low input lag, a high QHD resolution and a large 27" diagonal, which is great for almost any usage.

9.4 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
:
5.3 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
:
5.3 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
:
10.2 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
:
5.1 ms
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

The input lag of the AOC AG271QX is excellent, as expected for a gaming-targeted monitor. The input lag at 60Hz is a bit longer, however, this is due to the longer scan out time and so is expected. The FreeSync input lag is roughly equal to the input lag at native resolution, which is great.

8.4 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 : 109 PPI
Screen Diagonal : 27.0 inches
Screen Area : 311 sq inches

This Agon monitor provides great screen real estate due to the quad HD resolution and above average screen size.

Inputs
AOC AGON AG271QX Inputs 1 AOC AGON AG271QX Inputs 2

The AOC AG271QX also has a third area of inputs on the side as seen here.

Total Inputs
DisplayPort : 1 (DP 1.2)
Mini DisplayPort : No
HDMI : 1 (HDMI 2.0), 1 (HDMI 1.4)
DVI : 1 (DVI-D, dual link)
VGA : 1
DisplayPort Out : No
USB : 2 (USB 3.0)
USB C : No
Analog Audio Out 3.5mm : 1
Microphone In 3.5mm : 1
Digital Optical Audio Out : No
Analog Audio Out RCA : No

Features

The on-screen display of the AOC Agon AG271QX is very intuitive to use and allows access to a wide range of settings and adjustments. The external quick settings is a nice feature, and overall the controls are very easy to use.

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 few additional features, such as the quick settings toggle (pictured here) and options to adjust the overdrive when gaming or to increase shadows in dark areas.

On-Screen Display (OSD)
Controls
AOC AGON AG271QX Controls picture

The controls are located under the right-hand side of the monitor. They are fairly easy to press and do provide some tactile feedback.

In The Box
AOC AGON AG271QX In The Box picture

  • Manual
  • Power brick
  • Power cable
  • USB cable
  • 3.5mm cable x 2
  • HDMI cable
  • Quick settings toggle

Differences between Sizes and Variants

We tested the 27" model with a 144Hz TN panel and FreeSync (AG271QX). There are many more variants of AOC Agon Gaming monitors with differences in resolution, size, refresh rate and adaptive sync support which are described in the table below.

If someone comes across a different type of panel or if AOC AGON AX271QX 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 Resolution Refresh rate Panel Type Adaptive Sync
AG241QX 24" 2560x1440 144Hz TN FreeSync
AG241QG 24" 2560x1440 165Hz TN G-Sync
AG251FZ 25" 1920x1080 240Hz TN FreeSync
AG271QX 27" 2560x1440 144Hz TN FreeSync
AG271QG 27" 2560x1440 165Hz IPS G-Sync
AG271UG 27" 3840x2160 60Hz IPS G-Sync
AG352UCG 35" 3440x1440 100Hz VA G-Sync

 

Compared to other Monitors

AOC AGON AG271QX Group Shot Picture
Left: BenQ Zowie XL2540. Middle: AOC AGON AG271QX. Right: Dell S2716DG
Unlike our other photographs, this picture wasn't taken under a controlled environment, so do not draw conclusions from it.

While the AOC Agon AG271QX is a good monitor for mixed usage, it is focused on fast-paced gaming with high refresh rate, FreeSync support, and low input lag. For other uses, there may be better or cheaper monitors available. See our recommendations for the best gaming monitors for PC and the best gaming monitors for Xbox One X.

MSI Optix G27C

The AOC AGON AG271QX is much better than the MSI Optix G27C. The AOC AGON has much better ergonomics, making it easier to place it in the most comfortable position. The AGON displays gradients with almost no banding and has a very fast response time, so motion looks crisp with very little blur trail. The higher resolution of the AGON makes it easier to get more done or to see more fine details in games.

Dell S2716DG

The AOC AGON AG271QX is marginally better than the Dell S2716DG. The AG271QX has better black and gray uniformity which is great if your work involves a lot of web browsing or photo editing. The AOC AGON AG271QX also has a remarkable gradient with no visible banding. The Dell S2716DG, on the other hand, has an option to introduce flicker so as to make the image crisper.

ViewSonic XG2402

The AOC AGON AG271QX is slightly better than the ViewSonic XG2402. The AG271QX is better at displaying large areas of similar color, as it supports 10-bit color. However, the main advantage of the AGON AG271QX is the larger, higher resolution screen, that makes it much easier to see fine details in games and for multitasking.

ASUS PB277Q

The AOC AGON AG271QX is better than the ASUS PB277Q. The AGON AG271QX is a gaming oriented monitor, and has a much higher native refresh rate, so fast motion looks much smoother. The AOC also has better dark room performance with a higher native contrast ratio and better black uniformity.

Dell S2417DG

The AOC AGON AG271QX and the Dell S2417DG have very similar performance. Both support variable refresh rate implementations. The S2417DG supports G-Sync and the AG271QX supports FreeSync. The Dell also supports black frame insertion (BFI) through the NVIDIA ULMB and this can help clear persistence blur. It also has better ergonomics that make it easy to position the monitor to your liking, whereas the AOC AGON has a larger screen size which makes it more comfortable to work on.

HP OMEN 27

The AOC AGON AG271QX is better than the HP OMEN 27. The AOC AGON AG271QX has better ergonomics and this is very useful no matter the usage. It also has better black uniformity that improves the quality of blacks in a dark room. On the other hand, the HP supports the black frame insertion feature that helps reduce blur during fast action. 

Dell U2717D

The AOC AGON AG271QX is better than the Dell U2717D for most users, unless you need a wider viewing angle. The AGON AG271QX has much better motion handling, with almost no motion blur and a fast refresh rate, with very little input lag. The IPS panel in the U2717D has a wider horizontal and vertical viewing angle, good for wall mounting or sharing your work with someone, but it has worse dark room performance.

BenQ Zowie XL2540

The BenQ Zowie XL2540 is a 240Hz gaming monitor. Its higher refresh rate makes it even more responsive when playing FPS or other fast-paced games. It has similarly mediocre picture quality, and the accuracy of the image degrades rapidly when viewed at an angle. It also supports FreeSync, but across a larger range of frequencies. It is smaller at 25" though, and only 1080p resolution. If you only care about the most responsive image with lowest input lag, then go with the BenQ Zowie XL2540. For other usages, the larger screen area of the AGON AG271QX is better.

LG 27UD58-B

The LG 27UD58-B is a 60Hz IPS monitor with an impressive 4k resolution. It has better picture quality, mostly because the image remains accurate when viewed at an angle. The 4k resolution also improves multi-tasking performance as 4 x 1080p windows can be displayed on the same screen. It isn't as good for gaming though, due to the lower refresh rate (motion appears less smooth) and higher input lag. Overall, the LG 27UD58-B is a better choice for an office environment but for other uses, the AOC monitor is a better option.

+ Show more

Conclusion
SEE PRICE
Amazon.com

7.5Mixed Usage
Score components:
Good for mixed usage. The picture quality is below average. However, this is made up for with excellent motion handling and input lag due to the 144Hz refresh rate and support for FreeSync. Unfortunately, the image degrades rapidly when viewed at an angle and the sides lose accuracy when viewed from up close.
Decent monitor for office use. The AOC Agon AG271QX gets bright to overcome reflections, which is great. It also has a light-matte finish which handles direct glare well. The 1440p resolution is also comfortable for working on 1 or 2 windows at a time. Unfortunately, the edges of the screen look non-uniform due to the poor viewing angles and the image quality is below average.
Great choice for gaming. The AOC AG271QX feels extremely responsive due to the high native refresh rate and low input lag. The monitor also supports FreeSync to adjust the refresh rate to the game, which is great and removes screen tearing. Unfortunately, it can't flicker the backlight to clear up motion further and the picture quality is sub-par.
Decent monitor for watching movies and TV shows. The monitor handles reflections well due to great screen brightness and light-matte finish. Color accuracy is also decent out of the box. Unfortunately, the image degrades rapidly when viewed at an angle and the contrast ratio is sub-par.
Decent for creating media such as editing photos or videos. The monitor handles surrounding light well due to the light matte finish and can get bright to overcome glare. Unfortunately, it doesn't support the wider Adobe RGB color space and the image loses accuracy when viewed at an angle. The picture quality of the TN panel is also worse than average.
Doesn't support HDR. Also, the AOC AG271QX doesn't support HDR features such as a wide color gamut, and can't get bright. For an HDR gaming monitor, see the Samsung CHG70.

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