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Updated April 11, 2024·
If you value high-resolution productivity and vibrant images in gaming and media, the CoolerMaster GP27U with its sharp 4K display and ample brightness could be a fit for you, especially if you are involved in digital photo editing where accurate colors matter. On the other hand, if you prefer immersive gaming with deep blacks and excellent contrast, the ultrawide screen and the superior contrast of the Dell Alienware AW3423DWF might be more appealing. The Alienware's glossy screen could reflect more light, however, which is worth considering if you're in a brightly lit room. Consider the kinds of games you play and the environment you play in as well; fast-paced, competitive games could benefit from the Alienware’s lower response time, while the CoolerMaster provides more space for multitasking with its larger screen size and aspect ratio. 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 AW3423DWF (QD-OLED)
- Best in class for casual gaming
- Excellent 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
165Hz
1072:1
NATIVE CONTRAST
Inf:1
697 nits
SDR PEAK BRIGHTNESS
240 nits
1550 nits
HDR PEAK BRIGHTNESS
459 nits
N/A
DCI-P3 COLOR GAMUT
99.5 %
Matte
COATING
Glossy
The Dell Alienware AW3423DWF (QD-OLED) is best in class for casual gaming, while the CoolerMaster GP27U (IPS MiniLED) is very good.
Competitive Gaming
5.9
5.0
160Hz
REFRESH RATE
165Hz
6.2 ms
TOTAL RESPONSE TIME
1.4 ms
20 - 160 Hz
VARIABLE REFRESH RATE
20 - 165 Hz
No
STROBING / BFI
No
697 nits
SDR PEAK BRIGHTNESS
240 nits
The CoolerMaster GP27U (IPS MiniLED) and Dell Alienware AW3423DWF (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 AW3423DWF (QD-OLED) is poor.
Media Consumption
8.0
9.4
3840 x 2160
RESOLUTION
3440 x 1440
1072:1
NATIVE CONTRAST
Inf:1
697 nits
SDR PEAK BRIGHTNESS
240 nits
1550 nits
HDR PEAK BRIGHTNESS
459 nits
Matte
COATING
Glossy
The Dell Alienware AW3423DWF (QD-OLED) is excellent for media consumption, while the CoolerMaster GP27U (IPS MiniLED) is very good.
Cost
$770
$900
$400
$600
$800
$1,000
$1,200
$1,400
The CoolerMaster GP27U (IPS MiniLED) has a price of $770 and the Dell Alienware AW3423DWF (QD-OLED) costs $900.
Digital Photo Editing
No
Yes
The CoolerMaster GP27U (IPS MiniLED) is not suitable for digital photo editing while the Dell Alienware AW3423DWF (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 AW3423DWF (QD-OLED) is not suitable for print photo editing.
Key similarities
HDR Gaming and Media Consumption
Yes
Yes
Both the CoolerMaster GP27U (IPS MiniLED) and Dell Alienware AW3423DWF (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 AW3423DWF (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 AW3423DWF (QD-OLED) compare to other monitors
Spec Comparison
 |  | |
| CoolerMaster GP27U (IPS MiniLED) | Dell Alienware AW3423DWF (QD-OLED) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$770 | $900 | ||
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 | 240 nits | |
HDR Peak Brightness | |||
HDR Peak Brightness | 1550 nits | 459 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 % | 99.1 % | |
MOTION CHARACTERISTICS | |||
|---|---|---|---|
Total Response Time | |||
Total Response Time | 6.2 ms | 1.4 ms | |
Variable Refresh Rate | |||
Variable Refresh Rate | 20 - 160 Hz | 20 - 165 Hz | |
Strobing / BFI | |||
Strobing / BFI | No | No | |
Persistence Blur Score | |||
Persistence Blur Score | 7/10 | 7.1/10 | |
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 | 1 | |
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 AW3423DWF (QD-OLED)
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Dig into reviews and images
PC Gamer
Jeremy Laird | May 2023
"It may seem like a minor tweak, but the addition of a glossy anti-glare coating makes all the difference. It really lets the OLED panel rip. That this revised "F" model is also cheaper than the OG Alienware OLED and the similarly glossy Philips competition seals the deal. This is our new favourite among the OLED monitor massive."
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This information was produced and vetted by the PerfectRec monitors team. We are a product research and recommendation organization that meticulously reviews and evaluates the latest monitor information and makes it digestible for you.
By the numbers
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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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