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Corsair XENEON 27QHD240 Monitor Review

Tested using Methodology v1.2
Reviewed Aug 21, 2023 at 11:35 am
Latest change: Retest Sep 13, 2023 at 01:09 pm
Corsair XENEON 27QHD240 Picture
8.6
Mixed Usage
7.8
Office
9.2
Gaming
9.0
Media Consumption
8.7
Media Creation
8.6
HDR

The Corsair XENEON 27QHD240 is a 27-inch gaming monitor with a 1440p resolution. Alongside the Corsair XENEON FLEX 45WQHD240, it's one of two OLEDs that Corsair has, and it uses the same panel as the LG 27GR95QE-B and ASUS ROG Swift OLED PG27AQDM. It has everything you'd expect in a high-end gaming monitor, like a 240Hz refresh rate, variable refresh rate (VRR) support, and HDMI 2.1 bandwidth. Although it's focused on gaming, it has a few features for other uses like productivity, as it has a KVM switch that makes it easy to use the same keyboard and mouse connected to the monitor with two different sources. It has a few settings to combat permanent burn-in, which OLEDs are prone to, and Corsair advertises that there's a warranty against burn-in, but it's unclear what specific burn-in is covered as the warranty excludes normal wear and tear.

Our Verdict

8.6 Mixed Usage

The Corsair XENEON 27QHD240 is excellent for most uses. It's incredible for gaming because it has a fast 240Hz refresh rate, VRR support, a near-instantaneous response time, and low input lag at 240Hz, but that increases at lower refresh rates. It also has a near-infinite contrast ratio and perfect black uniformity, making it a great choice for gaming or watching movies in dark rooms. While it has fantastic reflection handling if you want to use it in a bright environment, like the office, it doesn't get bright enough to fight a ton of glare. It also has some limitations for office work and content creation due to text clarity issues and the risk of permanent burn-in. Lastly, it displays a wide range of colors and has alright brightness in HDR, but its HDR color volume is limited, so not all colors and highlights are bright and vivid.

Pros
  • Fantastic reflection handling.
  • Wide viewing angles.
  • 240Hz max refresh rate.
  • Near-instantaneous response time.
  • Perfect black levels.
Cons
  • Text clarity issues due to RWBG subpixel layout.
  • Limited peak brightness and aggressive ABL.
  • Risk of burn-in with static elements.
7.8 Office

The Corsair XENEON 27QHD240 is decent for the office, but there are some limitations. Its wide viewing angles and good ergonomics make it easy to adjust the screen, like when you need to show something to a coworker. It also has a few office-oriented features, like a KVM switch, so you can control two devices with the same keyboard and mouse. While it has fantastic reflection handling, it doesn't get bright enough to fight a lot of glare. Sadly, it has text clarity issues due to its RWBG subpixel layout, and OLEDs also risk permanent burn-in when exposed to the same static elements over time.

Pros
  • Fantastic reflection handling.
  • Wide viewing angles.
  • Good ergonomics.
  • USB-C port and KVM switch.
Cons
  • Text clarity issues due to RWBG subpixel layout.
  • Limited peak brightness and aggressive ABL.
  • Risk of burn-in with static elements.
9.2 Gaming

The Corsair XENEON 27QHD240 is incredible for gaming. Its 240Hz refresh rate is great for competitive gaming, and it has VRR support that works with any source to reduce screen tearing. Motion looks smooth no matter the refresh rate you're gaming at, and it has low input lag at high refresh rates, but it increases with lower refresh rates. On the plus side, it displays deep and inky blacks without blooming, making it a great choice in dark rooms.

Pros
  • 240Hz max refresh rate.
  • Supports all common VRR formats.
  • Near-instantaneous response time.
  • Perfect black levels.
  • 24 Gbps bandwidth over HDMI.
Cons
  • Input lag increases with 120Hz and 60Hz signals.
9.0 Media Consumption

The Corsair XENEON 27QHD240 is fantastic for media consumption. Its near-infinite contrast ratio and perfect black uniformity make it an ideal choice for watching content in dark rooms. It also has wide viewing angles, so anyone viewing the screen from the sides sees a consistent image. While it performs well in dark rooms, it's worse to use in bright rooms as it has low peak brightness, but it still has fantastic reflection handling to reduce glare from a few light sources.

Pros
  • Fantastic reflection handling.
  • Wide viewing angles.
  • Perfect black levels.
  • No blooming around bright objects.
Cons
  • Limited peak brightness and aggressive ABL.
8.7 Media Creation

The Corsair XENEON 27QHD240 is great for media consumption, but there are limitations. It displays a wide range of accurate colors in SDR, but you still need to calibrate it for the best accuracy possible. It also has good ergonomics and wide viewing angles, which help if you often need to share your screen with a coworker or client. However, there are text clarity issues due to its subpixel layout, resulting in color fringing and text that isn't very sharp. Also, OLEDs risk burn-in with exposure to static elements over time, like if you always have your editing software open.

Pros
  • Fantastic reflection handling.
  • Wide viewing angles.
  • Good ergonomics.
  • USB-C port and KVM switch.
Cons
  • Text clarity issues due to RWBG subpixel layout.
  • Limited peak brightness and aggressive ABL.
  • Risk of burn-in with static elements.
8.6 HDR

The Corsair XENEON 27QHD240 is excellent for HDR. It displays deep blacks next to bright highlights in dark rooms, and there isn't any blooming either. It has alright HDR brightness as small highlights pop against the rest of the image, but larger highlights are dimmer. While it displays a wide range of colors in HDR, its color volume is limited, so most colors aren't as bright and vivid as they should be.

Pros
  • Perfect black levels.
  • Small highlights pop in HDR.
  • No blooming around bright objects.
Cons
  • Limited HDR color volume.
  • 8.6 Mixed Usage
  • 7.8 Office
  • 9.2 Gaming
  • 9.0 Media Consumption
  • 8.7 Media Creation
  • 8.6 HDR
  1. Updated Sep 13, 2023: Updated the firmware to V103 and retested the SDR and HDR Peak Brightness with Brightness Stabilizer on. The update makes it brighter with the setting enabled, but it isn't a significant difference.
  2. Updated Aug 21, 2023: Review published.
  3. Updated Aug 16, 2023: Early access published.
  4. Updated Aug 09, 2023: Our testers have started testing this product.
  5. Updated Jul 12, 2023: The product has arrived in our lab, and our testers will start evaluating it soon.
  6. Updated Jun 20, 2023: We've purchased the product and are waiting for it to arrive in our lab.

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27" XENEON 27QHD240
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Differences Between Sizes And Variants

We tested the 27-inch Corsair XENEON 27WQHD240, which is the only size available for this model. Corsair also has the 45-inch Corsair XENEON FLEX 45WQHD240 monitor available, which is another OLED, but it's a different monitor with an ultrawide display and is bendable.

Model Size Panel Type Resolution Max Refresh Rate
27QHD240 27" OLED 2560x1440 240Hz

You can see the label for our unit here. We originally tested this monitor with firmware V102.

Compared To Other Monitors

The Corsair XENEON 27QHD240 is a fantastic gaming monitor with incredible motion handling, a high refresh rate, and perfect black levels. It can please any type of gamer with the combination of the fast refresh rate and premium picture quality. On top of its fantastic gaming performance, it even has a few extra productivity features compared to some other monitors. However, considering it doesn't get as bright as the ASUS ROG Swift OLED PG27AQDM and has higher input lag at low refresh rates, the ASUS offers better value. Still, if you can find it for less than the ASUS and the LG 27GR95QE-B, it might be worth getting if its downsides don't bother you. The limited three-year warranty on the Corsair is positive compared to the LG and ASUS, but the warranty also has some exceptions.

See our recommendations for the best gaming monitors, the best 1440p gaming monitors, and the best 240Hz monitors.

LG 27GR95QE-B

The Corsair XENEON 27QHD240 and the LG 27GR95QE-B use the same panel and perform similarly. However, there are still a few differences as the LG gets brighter in HDR and has improved color volume, while the Corsair has less overshoot with fast-moving objects. The Corsair also has a few extra features, like USB-C ports and a KVM switch. They both support HDMI 2.1 bandwidth, but the LG supports 48 Gbps bandwidth compared to 24 Gbps on the Corsair, so your source doesn't need to use compression for demanding signals.

ASUS ROG Swift OLED PG27AQDM

The Corsair XENEON 27QHD240 and the ASUS ROG Swift OLED PG27AQDM use the same panel, but there are a few differences. The ASUS gets much brighter, especially in HDR, and colors look more vivid thanks to its improved color volume, so its overall picture quality is better. However, the Corsair has a few extra features that the ASUS doesn't have, like HDMI 2.1 bandwidth, USB-C ports, and a KVM switch. These can be useful if you want to connect multiple devices.

Dell Alienware AW3423DWF

The Dell Alienware AW3423DWF and the Corsair XENEON 27QHD240 are different types of OLEDs. The Dell has an ultrawide display with a QD-OLED panel, allowing it to get much brighter with more vivid colors than the Corsair. On the other hand, the Corsair has a higher 240Hz refresh rate, which is ideal for competitive gaming, and it supports 4k signals up to 120Hz from the PS5 and Xbox Series X|S, which the Dell can't do.

Samsung Odyssey OLED G8/G85SB S34BG85

The Samsung Odyssey OLED G8/G85SB S34BG85 and the Corsair XENEON 27QHD240 are different types of OLEDs. The Samsung has an ultrawide display with a QD-OLED panel, allowing it to get much brighter with more vivid colors than the Corsair. On the other hand, the Corsair has a higher 240Hz refresh rate, which is ideal for competitive gaming, and it supports 4k signals up to 120Hz from the PS5 and Xbox Series X|S, which the Samsung monitor can't do.

Corsair XENEON FLEX 45WQHD240

The Corsair XENEON 27QHD240 is a smaller model than the Corsair XENEON FLEX 45WQHD240, and they share many similarities, but there are a few differences too. The 45WQHD240 has a wider and larger 45-inch screen and 3440x1440 resolution, so you can see more of your game at once, and it has a bendable screen. On the other hand, the 27QHD240 has a more ergonomic stand that you can remove, so you can mount the display if you choose to. The 45WQHD240 gets brighter in SDR, but other than that, the monitors are similar.

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Video

Test Results

perceptual testing image
Design
Design
Style
Curved
No
Curve Radius
Not Curved

The Corsair XENEON 27QHD240 has a rather simplistic look with an all-plastic black body, and it shares some design elements with the larger Corsair XENEON FLEX 45WQHD240. It doesn't have a heavy gamer aesthetic, so it blends into any environment.

8.5
Design
Build Quality

The build quality is excellent. The plastic materials feel nice, and even the plastic on the back is well-made. The stand is also solid and holds the display well, with minimal wobble.

7.7
Design
Ergonomics
Height Adjustment
3.9" (10.0 cm)
Tilt Range
-5° to 12.5°
Rotate Portrait/Landscape
Yes, Both Ways
Swivel Range
-30° to 30°
Wall Mount
VESA 100x100

The Corsair XENEON 27QHD240 has good ergonomics, and unlike the Corsair XENEON FLEX 45WQHD240, you can remove the stand to mount it. At the stand's lowest height adjustment, the bottom of the screen is 3.1" (8 cm) from the desk. The back features smooth plastic with some grill designs on the stand and where the vent is, as you can see here. There's also a large cutout in the stand for cable management.

Design
Stand
Base Width
18.0" (45.6 cm)
Base Depth
8.9" (22.6 cm)
Thickness (With Display)
6.7" (17.0 cm)
Weight (With Display)
14.5 lbs (6.6 kg)

The stand supports the display well, and there's enough space between the feet to put your peripherals.

Design
Display
Size
27"
Housing Width
23.8" (60.5 cm)
Housing Height
13.9" (35.2 cm)
Thickness (Without Stand)
1.9" (4.8 cm)
Weight (Without Stand)
9.7 lbs (4.4 kg)
Borders Size (Bezels)
0.2" (0.6 cm)
Design
Controls

There are three buttons underneath the bottom bezel to control the on-screen display, and they can be hard to use. For example, you may accidentally press the wrong option while using the joystick. There's also a sensor that puts a pop-up on the screen to show where the buttons are, which is nice when you can't find them. It works well and isn't overly sensitive, so passing your mouse underneath won't trigger it and bother your gaming session. You really need to put your hand right underneath the bezel for it to appear.

Design
In The Box
Power Supply
External Brick

  • DisplayPort cable
  • HDMI cable
  • Power supply and cable
  • USB-C to USB-C cable
  • USB-C to USB-A cable
  • User documentation, including calibration report

Picture Quality
10
Picture Quality
Contrast
Native Contrast
Inf : 1
Contrast With Local Dimming
N/A

The Corsair XENEON 27QHD240 has a near-infinite contrast ratio thanks to its OLED panel. This means it displays deep and inky blacks next to bright highlights in dark rooms.

10
Picture Quality
Local Dimming
Local Dimming
No
Backlight
No Backlight

OLED panels like this one don't have a backlight, so they don't require a local dimming feature. However, with a near-infinite contrast ratio, there isn't any blooming around bright objects, and it's the equivalent of a perfect local dimming feature. We still film these videos on the monitor so you can see how the screen performs and compare it with a monitor that has local dimming.

5.6
Picture Quality
SDR Brightness
Real Scene
161 cd/m²
Peak 2% Window
254 cd/m²
Peak 10% Window
274 cd/m²
Peak 25% Window
283 cd/m²
Peak 50% Window
204 cd/m²
Peak 100% Window
113 cd/m²
Sustained 2% Window
252 cd/m²
Sustained 10% Window
272 cd/m²
Sustained 25% Window
281 cd/m²
Sustained 50% Window
203 cd/m²
Sustained 100% Window
113 cd/m²
Automatic Brightness Limiting (ABL)
0.060
Minimum Brightness
40 cd/m²

The SDR brightness is disappointing. It doesn't get bright enough with most content to fight glare in well-lit rooms. It also has an aggressive Automatic Brightness Limiter (ABL), even more so than the ASUS ROG Swift OLED PG27AQDM and the LG 27GR95QE-B. You can see the screen dim when changing window sizes, but it's also slow to change brightness, which is noticeable. There's a Brightness Stabilizer setting that limits the ABL by dimming the entire screen, and you can see the results with it on below. These results are with firmware V103, which makes it brighter than with V102 with this setting enabled, as the brightness was closer to 110 cd/m² in most content with that firmware.

  • Real Scene 122 cd/m²
  • Peak 2% Window 147 cd/m²
  • Peak 10% Window 153 cd/m²
  • Peak 25% Window 157 cd/m²
  • Peak 50% Window 158 cd/m²
  • Peak 100% Window 158 cd/m²
  • Sustained 2% Window 146 cd/m²
  • Sustained 10% Window 153 cd/m²
  • Sustained 25% Window 157 cd/m²
  • Sustained 50% Window 157 cd/m²
  • Sustained 100% Window 158 cd/m²
  • ABL 0.005

Both of these results are from after calibration with the 'Standard' Preset, Color Temperature on 'Custom' (Red 88, Green 85, Blue 73), and the Brightness at its max.

6.2
Picture Quality
HDR Brightness
VESA DisplayHDR Certification
No Certification
Real Scene
316 cd/m²
Peak 2% Window
730 cd/m²
Peak 10% Window
639 cd/m²
Peak 25% Window
414 cd/m²
Peak 50% Window
231 cd/m²
Peak 100% Window
138 cd/m²
Sustained 2% Window
719 cd/m²
Sustained 10% Window
625 cd/m²
Sustained 25% Window
410 cd/m²
Sustained 50% Window
230 cd/m²
Sustained 100% Window
138 cd/m²
Automatic Brightness Limiting (ABL)
0.103

The Corsair XENEON 27QHD240 has alright peak brightness. Some small highlights stand out, but it isn't nearly as bright as the ASUS ROG Swift OLED PG27AQDM, and it's closer to the LG 27GR95QE-B. Its overall brightness is limited, and even the EOTF doesn't follow the target well, as it darkens most scenes before there's a slow roll-off, meaning it doesn't let highlights get the brightest they can.

These results are in HDR with Brightness locked to its max, Brightness Stabilizer off, and Color Temperature on 'Standard'. There aren't any preset modes in HDR either. The monitor gets brighter in smaller highlights with Color Temperature set to 'Default' instead of 'Standard', even though 'Standard' is the default setting. However, the color temperature is also a lot colder with 'Default'.

  • Peak 2% Window 845 cd/m²
  • Peak 10% Window 733 cd/m²
  • Peak 25% Window 413 cd/m²
  • Peak 50% Window 224 cd/m²
  • Peak 100% Window 130 cd/m²
  • Sustained 2% Window 762 cd/m²
  • Sustained 10% Window 720 cd/m²
  • Sustained 25% Window 408 cd/m²
  • Sustained 50% Window 223 cd/m²
  • Sustained 100% Window 129 cd/m²
  • EOTF

Like in SDR, the aggressive ABL results in distracting changes in brightness. You can limit it by enabling Brightness Stabilizer, but that dims the screen a lot and defeats the purpose of having a bright display for HDR content. These results are with firmware V103, which is brighter than V102, but there isn't a significant difference with most content either.

  • Real Scene 159 cd/m²
  • Peak 2% Window 360 cd/m²
  • Peak 10% Window 318 cd/m²
  • Peak 25% Window 208 cd/m²
  • Peak 50% Window 207 cd/m²
  • Peak 100% Window 208 cd/m²
  • Sustained 2% Window 356 cd/m²
  • Sustained 10% Window 315 cd/m²
  • Sustained 25% Window 208 cd/m²
  • Sustained 50% Window 206 cd/m²
  • Sustained 100% Window 207 cd/m²
  • ABL 0.042

9.9
Picture Quality
Horizontal Viewing Angle
Color Washout From Left
70°
Color Washout From Right
70°
Color Shift From Left
57°
Color Shift From Right
70°
Brightness Loss From Left
70°
Brightness Loss From Right
70°
Black Level Raise From Left
70°
Black Level Raise From Right
70°
Gamma Shift From Left
70°
Gamma Shift From Right
70°

The Corsair 27QHD240 has an incredible horizontal viewing angle. You won't notice any issues when viewing content from the sides.

10
Picture Quality
Vertical Viewing Angle
Color Washout From Below
70°
Color Washout From Above
70°
Color Shift From Below
69°
Color Shift From Above
67°
Brightness Loss From Below
70°
Brightness Loss From Above
70°
Black Level Raise From Below
70°
Black Level Raise From Above
70°
Gamma Shift From Below
70°
Gamma Shift From Above
70°

The vertical viewing angle is remarkable. While it isn't perfect, the image remains consistent even if you stand up and look down at the monitor.

8.9
Picture Quality
Gray Uniformity
50% Std. Dev.
1.149%
50% DSE
0.118%

The gray uniformity is amazing. While the edges of the screen are a bit darker than the rest, it's hard to notice and isn't distracting.

10
Picture Quality
Black Uniformity
Native Std. Dev.
0.181%
Std. Dev. w/ L.D.
N/A

The Corsair XENEON 27QHD240 has perfect black uniformity thanks to its OLED panel. There isn't any blooming around bright objects on dark backgrounds.

7.5
Picture Quality
Color Accuracy (Pre-Calibration)
Picture Mode
sRGB
sRGB Gamut Area xy
109.5%
White Balance dE (Avg.)
3.52
Color Temperature (Avg.)
6,192 K
Gamma (Avg.)
2.46
Color dE (Avg.)
2.89
Contrast Setting
N/A
RGB Settings
Default
Gamma Setting
Default
Brightness Setting
100
Measured Brightness
169 cd/m²
Brightness Locked
No

The accuracy before calibration is good. The dedicated sRGB mode locks colors well to the sRGB color space, but not all colors are entirely accurate. The white balance is still off, especially with darker gray, and gamma is much darker than the intended sRGB mode. The color temperature is close to the 6500K target, but it's still on the warm side. Unfortunately, the sRGB mode locks some settings like Gamma and Color Temperature, so if you prefer using another mode to customize those settings, colors are more oversaturated, as you can see here.

9.3
Picture Quality
Color Accuracy (Post-Calibration)
Picture Mode
Standard
sRGB Gamut Area xy
103.0%
White Balance dE (Avg.)
0.50
Color Temperature (Avg.)
6,448 K
Gamma (Avg.)
2.19
Color dE (Avg.)
1.78
Contrast Setting
50
RGB Settings
88-85-73
Gamma Setting
2.2
Brightness Setting
17
Measured Brightness
99 cd/m²
ICC Profile
Download

The accuracy after calibration is fantastic. Calibrating it fixes most issues, and you won't notice any inaccuracies.

9.7
Picture Quality
SDR Color Gamut
sRGB Coverage xy
100.0%
sRGB Picture Mode
Standard
Adobe RGB Coverage xy
90.4%
Adobe RGB Picture Mode
Standard

The SDR color gamut is fantastic. It has perfect coverage of the sRGB color space used in most content, and it also displays a ton of colors in the Adobe RGB color space used in some photo editing, but some colors are inaccurate.

9.9
Picture Quality
SDR Color Volume
sRGB In ICtCp
99.8%
sRGB Picture Mode
Standard
Adobe RGB In ICtCp
94.0%
Adobe RGB Picture Mode
Standard

The SDR color volume is incredible. It doesn't have issues displaying a wide range of bright and dark colors.

9.1
Picture Quality
HDR Color Gamut
Wide Color Gamut
Yes
DCI-P3 Coverage xy
97.3%
DCI-P3 Picture Mode
HDR On
Rec. 2020 Coverage xy
70.1%
Rec. 2020 Picture Mode
HDR On

The Corsair XENEON 27QHD240 has an incredible HDR color gamut. It displays a wide range of colors in the common DCI-P3 color space, but it doesn't tone map all that well, as most colors are still inaccurate. It has decent coverage of the wider Rec. 2020 color space, but once again, there are tone mapping issues. These results are with the 'Standard' Color Temperature setting, and you can also see the results with the 'Default' setting, which has a colder color temperature:

DCI-P3

  • DCI-P3 Coverage 97.0%
  • Tone-Mapped DCI-P3 Coverage 83.1%

Rec. 2020

  • Rec. 2020 Coverage 69.6%

6.1
Picture Quality
HDR Color Volume
DCI-P3 In ICtCp
60.5%
DCI-P3 Picture Mode
HDR On
Rec. 2020 In ICtCp
56.2%
Rec. 2020 Picture Mode
HDR On

The Corsair XENEON 27QHD240 has mediocre HDR color volume. It struggles to display colors at a wide range of brightness levels, especially bright colors. These results are with a 10,000-nit metadata signal, and it performs similarly even with 600 and 1,000-nit signals, meaning it has a limited color volume no matter what signal you send. You can see the results below:

These results are with Color Temperature set to 'Standard', and the color volume is similar with it set to 'Default', as you can see here:

Overall, the color volume is much less than the ASUS ROG Swift OLED PG27AQDM as it doesn't display the same bright and vivid colors. You can see the differences between both monitors below:

ASUS (Left) vs Corsair (Right)
ASUS P27AQDM vs Corsair 27QHD240
ASUS P27AQDM vs Corsair 27QHD240
ASUS P27AQDM vs Corsair 27QHD240

9.1
Picture Quality
Reflections
Screen Finish
Matte
Total Reflections
1.8%
Indirect Reflections
0.9%
Calculated Direct Reflections
0.9%

The Corsair XENEON 27QHD240 has fantastic reflection handling. It has an aggressive matte screen coating that reduces glare from strong light sources well, but it still struggles in bright rooms because of its low peak brightness.

6.5
Picture Quality
Text Clarity
Pixel Type
OLED
Subpixel Layout
RWBG

The text clarity is alright. Computer programs don't render text well with its RWBG subpixel layout, causing color fringing around text, as you can see with ClearType enabled (top photo). The same issue occurs even in Windows 11 with ClearType on and with ClearType off. The matte screen coating also negatively impacts the text clarity, as text is hazier than on monitors with a less aggressive screen finish.

Due to its RWBG subpixel layout, all four subpixels are never on at the same time. You can see more examples of the pixels in the LG 27GR95QE-B review, which uses the same panel.

9.3
Picture Quality
Gradient
Color Depth
10 Bit

The Corsair XENEON 27QHD240 has incredible gradient handling, as you won't see any banding in scenes with shades of similar colors, like a sunset.

Motion
9.0
Motion
Refresh Rate
Native Refresh Rate
240 Hz
Max Refresh Rate
240 Hz
Max Refresh Rate Over DP
240 Hz
Max Refresh Rate Over HDMI
240 Hz
Max Refresh Rate Over DP @ 10-bit
240 Hz
Max Refresh Rate Over HDMI @ 10-Bit
240 Hz

You can reach the monitor's max refresh rate with any type of connection. Still, your graphics card needs to support Display Stream Compression for 10-bit signals, which any NVIDIA 16 Series or AMD RX 5000 Series and newer graphics card supports.

Motion
Variable Refresh Rate (VRR)
FreeSync
Yes
G-SYNC
Compatible (NVIDIA Certified)
VRR Maximum
240 Hz
VRR Minimum
< 20 Hz
VRR Supported Connectors
DisplayPort, HDMI
Variable Refresh Rate
Yes

The Corsair XENEON 27QHD240 supports VRR over its entire refresh rate range, and it supports Low Framerate Compensation for the VRR to continue working at lower refresh rates.

9.9
Motion
Response Time @ Max Refresh Rate
Recommended Overdrive Setting
No Overdrive
Rise / Fall Time
0.3 ms
Total Response Time
1.1 ms
Overshoot Error
0.8%
Worst 3 Rise / Fall Time
0.5 ms
Worst 3 Total Response Time
4.1 ms
Worst 3 Overshoot Error
5.8%

Overdrive SettingResponse Time ChartResponse Time TablesMotion Blur Photo
No OverdriveChartTablePhoto

The response time at the max refresh rate of 240Hz is incredible. It has a near-instantaneous response time, resulting in minimal blur behind fast-moving objects, but there's still some persistence blur caused by the OLED's sample-and-hold method.

9.8
Motion
Response Time @ 120Hz
Recommended Overdrive Setting
No Overdrive
Rise / Fall Time
0.3 ms
Total Response Time
1.7 ms
Overshoot Error
1.0%
Worst 3 Rise / Fall Time
0.4 ms
Worst 3 Total Response Time
8.3 ms
Worst 3 Overshoot Error
7.8%

Overdrive SettingResponse Time ChartResponse Time TablesMotion Blur Photo
No OverdriveChartTablePhoto

The response time at 120Hz is once again fantastic as it's near-instantaneous. Interestingly, the monitor still refreshes at a 240Hz refresh rate when you send a fixed signal below 240 fps, meaning the response time is similar to its performance at 240Hz. It only refreshes lower than 240Hz, like at 120Hz, when the monitor and the source handshake at 240Hz, then VRR is activated to reach lower refresh rates. Regardless, motion is smooth no matter what the monitor is refreshing at.

9.6
Motion
Response Time @ 60Hz
Recommended Overdrive Setting
No Overdrive
Rise / Fall Time
0.8 ms
Total Response Time
4.6 ms
Overshoot Error
1.2%
Worst 3 Rise / Fall Time
1.1 ms
Worst 3 Total Response Time
16.6 ms
Worst 3 Overshoot Error
8.6%

Overdrive SettingResponse Time ChartResponse Time TablesMotion Blur Photo
No OverdriveChartTablePhoto

The Corsair XENEON 27QHD240 has a fantastic response time at 60Hz. Like at 120Hz, the monitor only refreshes at 60Hz when VRR is on and the frame rate drops down to 60 fps, causing the refresh rate to match the frame rate. Motion looks smooth, thanks to its near-instantaneous response time.

Motion
Backlight Strobing (BFI)
Backlight Strobing (BFI)
No BFI
Maximum Frequency
N/A
Minimum Frequency
N/A
Longest Pulse Width Brightness
N/A
Shortest Pulse Width Brightness
N/A
Pulse Width Control
No BFI
Pulse Phase Control
No BFI
Pulse Amplitude Control
No BFI
VRR At The Same Time
No BFI

The Corsair XENEON 27QHD240 doesn't have an optional black frame insertion feature to reduce persistence blur.

10
Motion
Image Flicker
Flicker-Free
No
PWM Dimming Frequency
0 Hz

The Corsair XENEON 27QHD240 technically isn't flicker-free because a slight dip in brightness corresponds to the 240Hz refresh rate. However, it isn't the same as pulse width modulation because it isn't a full screen on and off, and you won't notice this flicker.

Inputs
8.9
Inputs
Input Lag
Native Resolution @ Max Hz
2.7 ms
Native Resolution @ 120Hz
10.4 ms
Native Resolution @ 60Hz
20.7 ms
Backlight Strobing (BFI)
N/A

The input lag is low at 240Hz, resulting in a responsive feel. It increases a lot more at 120Hz and 60Hz, which is disappointing if you're a competitive gamer and need the least delay possible, but it's also not terribly high either. The ASUS ROG Swift OLED PG27AQDM and the LG 27GR95QE-B had the same issue before a firmware update, so we'll update this review if the monitor receives an update that lowers the input lag. We tested it with firmware V102.

8.0
Inputs
Resolution And Size
Native Resolution
2560 x 1440
Aspect Ratio
16:9
Megapixels
3.7 MP
Pixel Density
110 PPI
Measured Screen Diagonal
26.5"
Screen Area
301 in²
10
Inputs
PS5 Compatibility
4k @ 120Hz
Yes
4k @ 60Hz
Yes
1440p @ 120Hz
Yes
1440p @ 60Hz
Yes
1080p @ 120Hz
Yes
1080p @ 60Hz
Yes
HDR
Yes
VRR
Yes

The Corsair 27QHD240 works perfectly with the PS5 thanks to its HDMI 2.1 bandwidth. It even downscales 4k games, which results in a more detailed image than a native 1440p signal. However, because the monitor only supports 24 Gbps bandwidth of HDMI 2.1, it only supports chroma 4:2:0 with 4k @ 120Hz signals vs. 4:2:2 with other signals from the PS5, which negatively impacts text clarity.

10
Inputs
Xbox Series X|S Compatibility
4k @ 120Hz
Yes
4k @ 60Hz
Yes
1440p @ 120Hz
Yes
1440p @ 60Hz
Yes
1080p @ 120Hz
Yes
1080p @ 60Hz
Yes
HDR
Yes
VRR
Yes

The Corsair XENEON 27QHD240 works perfectly with the Xbox Series X|S, and you don't need to enable the HDMI override setting for 1440p to work.

Inputs
Inputs Photos
Inputs
Video And Audio Ports
DisplayPort
1 (DP 1.4)
Mini DisplayPort
No
HDMI
2 (HDMI 2.1)
HDMI 2.1 Rated Speed
24Gbps (FRL 6x4)
DVI
No
VGA
No
Daisy Chaining
No
3.5mm Audio Out
1
3.5mm Audio In
No
HDR10
Yes
3.5mm Microphone In
No

As it doesn't support the full 48 Gbps bandwidth of HDMI 2.1, your source needs to use compression to meet its bandwidth limit.

Inputs
USB
USB-A Ports
4
USB-A Rated Speed
5Gbps (USB 3.2 Gen 1)
USB-B Upstream Port
No
USB-C Ports
2
USB-C Upstream
Yes
USB-C Rated Speed
5Gbps (USB 3.2 Gen 1)
USB-C Power Delivery
65W
USB-C DisplayPort Alt Mode
Yes
Thunderbolt
No

The USB-C port on the left side supports DisplayPort Alt Mode to display an image from a compatible device and supports 65W of power delivery. The USB-C port on the right side is an upstream port for the KVM switch, or you can use it to charge smaller devices as it supports up to 15W of power delivery.

Inputs
macOS Compatibility

The Corsair XENEON 27QHD240 works well with macOS over USB-C. There aren't any issues with HDR, and VRR works from 40Hz to 240Hz. If you're using a MacBook, you can close the lid and continue working on the screen.

Features
Features
Additional Features
Speakers
No
RGB Illumination
No
Multiple Input Display
PIP + PBP
KVM Switch
Yes

The Corsair XENEON 27QHD240 has a few extra features to improve the user experience. You can use its Picture-by-Picture and Picture-in-Picture modes with either two HDMI sources or a combination of sources connected to HDMI, DisplayPort, or USB-C. It also has a KVM switch that makes it easy to switch between sources and use the same keyboard and mouse connected to the monitor. To use this feature, you need to have the USB-C to USB-A cable connected from the USB-C port on the right of the monitor to your computer, and you can have one device connected via HDMI or DisplayPort and the other via USB-C using DisplayPort Alt Mode.

Like any OLED, it has features to reduce the risk of burn-in. It has an Orbit setting that's supposed to shift the pixels to avoid image retention, and there's also an Image Retention Refresh setting that runs after 8 hours of usage when you power off the display, or you can run it manually. However, it doesn't have settings some other OLEDs have, like auto logo dimming or a full image refresh cycle.

Corsair offers a warranty against burn-in in the U.S., but this can also vary between regions. Although they advertise a warranty for burn-in specifically, the info sheet that comes with the monitor states that the warranty excludes 'wear and tear associated with normal use', and it doesn't specifically mention OLED burn-in, so it's unclear in what cases they cover the burn-in. You can read the warranty info here.

Features
On-Screen Display (OSD)