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What we think
The PerfectRec monitor team Learn more
Updated April 11, 2024·
If you prioritize a well-rounded monitor for productivity that also delivers a very good gaming and media consumption experience at a lower cost, the CoolerMaster GP27U is an excellent choice. Its MiniLED technology offers great brightness and contrast for HDR content. However, if you're an enthusiast seeking the absolute best image quality and performance for gaming and media, and are willing to pay a premium, the Dell Alienware AW3423DW with its QD-OLED panel provides outstanding contrast and color depth. Keep in mind, the Alienware's glossy screen may reflect more ambient light, which could be distracting in well-lit rooms. Give Feedback
this description is based on the product variant with some specs and product variant with some specs. At the time of writing, the variant with some specs cost some dollars and the variant with some specs cost some dollars.
Advantages of the CoolerMaster GP27U (IPS MiniLED)
- Best in class for productivity
- Very good text clarity
- Very good image clarity
- Very good brightness
Advantages of the Dell Alienware AW3423DW (QD-OLED)
- Best in class for casual gaming
- Best in class for media consumption
- Best in class contrast
- Best in class color volume
- Best in class response time
Key differences
Casual Gaming
8.0
9.5
3840 x 2160
RESOLUTION
3440 x 1440
160Hz
REFRESH RATE
175Hz
1072:1
NATIVE CONTRAST
Inf:1
697 nits
SDR PEAK BRIGHTNESS
243 nits
1550 nits
HDR PEAK BRIGHTNESS
474 nits
N/A
DCI-P3 COLOR GAMUT
99.4 %
Matte
COATING
Glossy
The Dell Alienware AW3423DW (QD-OLED) is best in class for casual gaming, while the CoolerMaster GP27U (IPS MiniLED) is very good.
Competitive Gaming
5.9
5.1
160Hz
REFRESH RATE
175Hz
6.2 ms
TOTAL RESPONSE TIME
1.4 ms
20 - 160 Hz
VARIABLE REFRESH RATE
20 - 175 Hz
No
STROBING / BFI
No
697 nits
SDR PEAK BRIGHTNESS
243 nits
The CoolerMaster GP27U (IPS MiniLED) and Dell Alienware AW3423DW (QD-OLED) are both poor for competitive gaming, though the CoolerMaster GP27U (IPS MiniLED) is somewhat better.
Productivity
9.8
5.7
3840 x 2160
RESOLUTION
3440 x 1440
163 PPI
PIXELS PER INCH
110 PPI
Yes
ADJUSTABLE STAND
Yes
Matte
COATING
Glossy
The CoolerMaster GP27U (IPS MiniLED) is best in class for productivity, while the Dell Alienware AW3423DW (QD-OLED) is poor.
Media Consumption
8.0
9.5
3840 x 2160
RESOLUTION
3440 x 1440
1072:1
NATIVE CONTRAST
Inf:1
697 nits
SDR PEAK BRIGHTNESS
243 nits
1550 nits
HDR PEAK BRIGHTNESS
474 nits
Matte
COATING
Glossy
The Dell Alienware AW3423DW (QD-OLED) is best in class for media consumption, while the CoolerMaster GP27U (IPS MiniLED) is very good.
Digital Photo Editing
No
Yes
The CoolerMaster GP27U (IPS MiniLED) is not suitable for digital photo editing while the Dell Alienware AW3423DW (QD-OLED) is suitable for digital photo editing.
Print Photo Editing
Yes
No
The CoolerMaster GP27U (IPS MiniLED) is suitable for print photo editing while the Dell Alienware AW3423DW (QD-OLED) is not suitable for print photo editing.
Key similarities
Cost
$1,138
$1,100
$400
$600
$800
$1,000
$1,200
$1,400
$1,600
$1,800
The CoolerMaster GP27U (IPS MiniLED) has a price of $1,138 and the Dell Alienware AW3423DW (QD-OLED) costs $1,100.
HDR Gaming and Media Consumption
Yes
Yes
Both the CoolerMaster GP27U (IPS MiniLED) and Dell Alienware AW3423DW (QD-OLED) are suitable for HDR gaming and media consumption.
HDR Video Editing and Color Grading
No
No
Both the CoolerMaster GP27U (IPS MiniLED) and Dell Alienware AW3423DW (QD-OLED) are not suitable for HDR video editing and color grading.
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How the CoolerMaster GP27U (IPS MiniLED) and the Dell Alienware AW3423DW (QD-OLED) compare to other monitors
Spec Comparison
 |  | |
| CoolerMaster GP27U (IPS MiniLED) | Dell Alienware AW3423DW (QD-OLED) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$1,138 | $1,100 | ||
Screen Size | |||
Screen Size | 27" | 34" | |
Resolution | |||
Resolution | 3840 x 2160 | 3440 x 1440 | |
Screen Type | |||
Screen Type | MiniLED | OLED | |
Screen Sub-type | |||
Screen Sub-type | IPS | QD-OLED | |
Local Dimming Zones | |||
Local Dimming Zones | 576 | N/A | |
COLOR, CONTRAST & BRIGHTNESS | |||
|---|---|---|---|
Native Contrast | |||
Native Contrast | 1072:1 | Inf:1 | |
SDR Peak Brightness | |||
SDR Peak Brightness | 697 nits | 243 nits | |
HDR Peak Brightness | |||
HDR Peak Brightness | 1550 nits | 474 nits | |
Suitable for HDR Gaming and Media Consumption | |||
Suitable for HDR Gaming and Media Consumption | Yes | Yes | |
sRGB Color Gamut | |||
sRGB Color Gamut | 95.1 % | 100 % | |
MOTION CHARACTERISTICS | |||
|---|---|---|---|
Total Response Time | |||
Total Response Time | 6.2 ms | 1.4 ms | |
Variable Refresh Rate | |||
Variable Refresh Rate | 20 - 160 Hz | 20 - 175 Hz | |
Strobing / BFI | |||
Strobing / BFI | No | No | |
Persistence Blur Score | |||
Persistence Blur Score | 7/10 | 7.2/10 | |
Ghosting Score | |||
Ghosting Score | 8/10 | 9.5/10 | |
TEXT & IMAGE CLARITY | |||
|---|---|---|---|
Pixels Per Inch | |||
Pixels Per Inch | 163 PPI | 110 PPI | |
Coating | |||
Coating | Matte | Glossy | |
Text Clarity Score | |||
Text Clarity Score | 8/10 | 6.6/10 | |
Image Clarity Score | |||
Image Clarity Score | 8/10 | 7.1/10 | |
PORTS & CONNECTIVITY | |||
|---|---|---|---|
HDMI 1.4 Ports | |||
HDMI 1.4 Ports | 0 | 0 | |
HDMI 2.0 Ports | |||
HDMI 2.0 Ports | 0 | 2 | |
HDMI 2.1 Ports | |||
HDMI 2.1 Ports | 2 | 0 | |
Micro HDMI Ports | |||
Micro HDMI Ports | 0 | 0 | |
DisplayPort 1.2 Ports | |||
DisplayPort 1.2 Ports | 0 | 0 | |
Shopping
CoolerMaster GP27U (IPS MiniLED)
See more
Dig into reviews and images
Tom's Hardware
Christian Eberle | February 2023
"The Cooler Master Tempest GP27U leaves little to complain about. It delivers a stunning picture with high contrast, brightness, and vivid color. Professional-grade video processing means a superlative gaming experience. And it’s a little less expensive than the competition."
Dell Alienware AW3423DW (QD-OLED)
See more
Dig into reviews and images
Tom's Hardware
Christian Eberle | April 2022
"Alienware has brought the best display technology to the desktop with its AW3423DW. With infinite contrast and a huge color gamut, it boasts a stunning image with accurate color and no need for calibration. Gaming performance is superb with smooth motion processing and quick response. This monitor truly raises the bar."
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About the monitor team
Joe Golden, Ph.D
CEO and Monitors Editor
Joe is an entrepreneur and lifelong electronics enthusiast with a Ph.D in Economics from the University of Michigan.
Jason Lew
Staff Expert & Software Engineer
Jason is a staff expert and software engineer that has been making laptop recommendations for 7 years and moderates one of the largest laptop subreddits.
Chandradeep Chowdhury
Staff Expert & Software Engineer
Chandradeep is a staff expert and software engineer and expert in televisions and monitors. He’s been making monitor recommendations for ten years.
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