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What we think
The PerfectRec monitor team Learn more
Updated April 23, 2024·
If you value sharper text and more screen real estate for productivity, the CoolerMaster GP27U with its high pixel density and excellent color accuracy is a strong choice, particularly if cost is a main concern. On the other hand, the MSI MAG 321UPX excels in providing a superior contrast ratio and color depth due to its QD-OLED technology, making it a better option for those focused on HDR gaming and media consumption, despite its higher price. However, for competitive gaming, the MSI's faster response time might give you an edge. Both have similar high resolutions, but if print photo editing is a priority, the CoolerMaster's AdobeRGB coverage offers an advantage. 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
Advantages of the MSI MAG 321UPX (QD-OLED)
- Best in class for casual gaming
- Best in class for media consumption
- Very good refresh rate
- Best in class contrast
- Best in class brightness
- Best in class color volume
- Best in class response time
Key differences
Casual Gaming
8.0
9.9
3840 x 2160
RESOLUTION
3840 x 2160
160Hz
REFRESH RATE
240Hz
1072:1
NATIVE CONTRAST
Inf:1
697 nits
SDR PEAK BRIGHTNESS
1000 nits
1550 nits
HDR PEAK BRIGHTNESS
Unknown
N/A
DCI-P3 COLOR GAMUT
99.0 %
Matte
COATING
Matte
The MSI MAG 321UPX (QD-OLED) is best in class for casual gaming, while the CoolerMaster GP27U (IPS MiniLED) is very good.
Competitive Gaming
5.9
6.8
160Hz
REFRESH RATE
240Hz
6.2 ms
TOTAL RESPONSE TIME
0.0 ms
20 - 160 Hz
VARIABLE REFRESH RATE
48 - 240 Hz
No
STROBING / BFI
No
697 nits
SDR PEAK BRIGHTNESS
1000 nits
The MSI MAG 321UPX (QD-OLED) is only fair for competitive gaming, while the CoolerMaster GP27U (IPS MiniLED) is poor.
Productivity
9.8
7.6
3840 x 2160
RESOLUTION
3840 x 2160
163 PPI
PIXELS PER INCH
139 PPI
Yes
ADJUSTABLE STAND
Yes
Matte
COATING
Matte
The CoolerMaster GP27U (IPS MiniLED) is best in class for productivity, while the MSI MAG 321UPX (QD-OLED) is good.
Media Consumption
8.0
10.0
3840 x 2160
RESOLUTION
3840 x 2160
1072:1
NATIVE CONTRAST
Inf:1
697 nits
SDR PEAK BRIGHTNESS
1000 nits
1550 nits
HDR PEAK BRIGHTNESS
Unknown
Matte
COATING
Matte
The MSI MAG 321UPX (QD-OLED) is best in class 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 MSI MAG 321UPX (QD-OLED) costs $900.
Digital Photo Editing
No
Yes
The CoolerMaster GP27U (IPS MiniLED) is not suitable for digital photo editing while the MSI MAG 321UPX (QD-OLED) is suitable for digital photo editing.
HDR Video Editing and Color Grading
No
Yes
The CoolerMaster GP27U (IPS MiniLED) is not suitable for HDR video editing and color grading while the MSI MAG 321UPX (QD-OLED) is suitable for HDR video editing and color grading.
Key similarities
HDR Gaming and Media Consumption
Yes
Yes
Both the CoolerMaster GP27U (IPS MiniLED) and MSI MAG 321UPX (QD-OLED) are suitable for HDR gaming and media consumption.
Print Photo Editing
Yes
Yes
Both the CoolerMaster GP27U (IPS MiniLED) and MSI MAG 321UPX (QD-OLED) are suitable for print photo editing.
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We’re constantly working to improve.
How the CoolerMaster GP27U (IPS MiniLED) and the MSI MAG 321UPX (QD-OLED) compare to other monitors
Spec Comparison
 |  | |
| CoolerMaster GP27U (IPS MiniLED) | MSI MAG 321UPX (QD-OLED) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$770 | $900 | ||
Screen Size | |||
Screen Size | 27" | 32" | |
Resolution | |||
Resolution | 3840 x 2160 | 3840 x 2160 | |
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 | 1000 nits | |
HDR Peak Brightness | |||
HDR Peak Brightness | 1550 nits | Unknown | |
Suitable for HDR Gaming and Media Consumption | |||
Suitable for HDR Gaming and Media Consumption | Yes | Yes | |
sRGB Color Gamut | |||
sRGB Color Gamut | 95.1 % | 138.2 % | |
MOTION CHARACTERISTICS | |||
|---|---|---|---|
Total Response Time | |||
Total Response Time | 6.2 ms | 0.03 ms | |
Variable Refresh Rate | |||
Variable Refresh Rate | 20 - 160 Hz | 48 - 240 Hz | |
Strobing / BFI | |||
Strobing / BFI | No | No | |
Persistence Blur Score | |||
Persistence Blur Score | 7/10 | 8/10 | |
Ghosting Score | |||
Ghosting Score | 8/10 | 10/10 | |
TEXT & IMAGE CLARITY | |||
|---|---|---|---|
Pixels Per Inch | |||
Pixels Per Inch | 163 PPI | 139 PPI | |
Coating | |||
Coating | Matte | Matte | |
Text Clarity Score | |||
Text Clarity Score | 8/10 | 6.9/10 | |
Image Clarity Score | |||
Image Clarity Score | 8/10 | 7.9/10 | |
PORTS & CONNECTIVITY | |||
|---|---|---|---|
HDMI 1.4 Ports | |||
HDMI 1.4 Ports | 0 | 0 | |
HDMI 2.0 Ports | |||
HDMI 2.0 Ports | 0 | 0 | |
HDMI 2.1 Ports | |||
HDMI 2.1 Ports | 2 | 2 | |
Micro HDMI Ports | |||
Micro HDMI Ports | 0 | 0 | |
DisplayPort 1.2 Ports | |||
DisplayPort 1.2 Ports | 0 | 0 | |
Shopping
CoolerMaster GP27U (IPS MiniLED)
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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."
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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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