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What we think
The PerfectRec monitor team Learn more
Updated April 11, 2024·
Choosing the CoolerMaster GP27U offers a better contrast and peak brightness, which enhances your HDR gaming and media consumption experiences. It would be ideal for someone who values high-quality visuals in games and videos. On the other hand, the Sony M9, while still good for HDR content, excels in color accuracy and is suitable for digital photo editing. If you're a professional photo editor or someone who prioritizes color precision for work or personal projects, the Sony M9 may be the better choice. Keep in mind, for competitive gaming, either monitor performs well, but neither is specifically tailored for high-end competitive play. 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)
- Very good for casual gaming
- Very good for media consumption
- Good refresh rate
- Very good contrast
- Very good brightness
- Very good color volume
- Very good response time
Advantages of the Sony M9 (IPS FALD)
- The Sony M9 (IPS FALD) has no clear advantages over the CoolerMaster GP27U (IPS MiniLED).
Key differences
Casual Gaming
8.0
7.3
3840 x 2160
RESOLUTION
3840 x 2160
160Hz
REFRESH RATE
144Hz
1072:1
NATIVE CONTRAST
1000:1
697 nits
SDR PEAK BRIGHTNESS
432 nits
1550 nits
HDR PEAK BRIGHTNESS
695 nits
N/A
DCI-P3 COLOR GAMUT
67.7 %
Matte
COATING
Matte
The CoolerMaster GP27U (IPS MiniLED) is very good for casual gaming, while the Sony M9 (IPS FALD) is good.
Digital Photo Editing
No
Yes
The CoolerMaster GP27U (IPS MiniLED) is not suitable for digital photo editing while the Sony M9 (IPS FALD) is suitable for digital photo editing.
Print Photo Editing
Yes
No
The CoolerMaster GP27U (IPS MiniLED) is suitable for print photo editing while the Sony M9 (IPS FALD) is not suitable for print photo editing.
Key similarities
Competitive Gaming
5.9
5.7
160Hz
REFRESH RATE
144Hz
6.2 ms
TOTAL RESPONSE TIME
8.0 ms
20 - 160 Hz
VARIABLE REFRESH RATE
24 - 144 Hz
No
STROBING / BFI
No
697 nits
SDR PEAK BRIGHTNESS
432 nits
The CoolerMaster GP27U (IPS MiniLED) and Sony M9 (IPS FALD) are both poor for competitive gaming.
Productivity
9.8
9.6
3840 x 2160
RESOLUTION
3840 x 2160
163 PPI
PIXELS PER INCH
163 PPI
Yes
ADJUSTABLE STAND
Yes
Matte
COATING
Matte
The CoolerMaster GP27U (IPS MiniLED) and Sony M9 (IPS FALD) are both best in class for productivity.
Media Consumption
8.0
7.5
3840 x 2160
RESOLUTION
3840 x 2160
1072:1
NATIVE CONTRAST
1000:1
697 nits
SDR PEAK BRIGHTNESS
432 nits
1550 nits
HDR PEAK BRIGHTNESS
695 nits
Matte
COATING
Matte
Although they have very similar scores, PerfectRec considers CoolerMaster GP27U (IPS MiniLED) to be very good for media consumption, while the Sony M9 (IPS FALD) is good.
Cost
$770
$800
$400
$600
$800
$1,000
$1,200
The CoolerMaster GP27U (IPS MiniLED) has a price of $770 and the Sony M9 (IPS FALD) costs $800.
HDR Gaming and Media Consumption
Yes
Yes
Both the CoolerMaster GP27U (IPS MiniLED) and Sony M9 (IPS FALD) are suitable for HDR gaming and media consumption.
HDR Video Editing and Color Grading
No
No
Both the CoolerMaster GP27U (IPS MiniLED) and Sony M9 (IPS FALD) are not suitable for HDR video editing and color grading.
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We’re constantly working to improve.
How the CoolerMaster GP27U (IPS MiniLED) and the Sony M9 (IPS FALD) compare to other monitors
Spec Comparison
 |  | |
| CoolerMaster GP27U (IPS MiniLED) | Sony M9 (IPS FALD) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$770 | $800 | ||
Screen Size | |||
Screen Size | 27" | 27" | |
Resolution | |||
Resolution | 3840 x 2160 | 3840 x 2160 | |
Screen Type | |||
Screen Type | MiniLED | LED | |
Screen Sub-type | |||
Screen Sub-type | IPS | IPS FALD | |
Local Dimming Zones | |||
Local Dimming Zones | 576 | 96 | |
COLOR, CONTRAST & BRIGHTNESS | |||
|---|---|---|---|
Native Contrast | |||
Native Contrast | 1072:1 | 1000:1 | |
SDR Peak Brightness | |||
SDR Peak Brightness | 697 nits | 432 nits | |
HDR Peak Brightness | |||
HDR Peak Brightness | 1550 nits | 695 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 | 8 ms | |
Variable Refresh Rate | |||
Variable Refresh Rate | 20 - 160 Hz | 24 - 144 Hz | |
Strobing / BFI | |||
Strobing / BFI | No | No | |
Persistence Blur Score | |||
Persistence Blur Score | 7/10 | 6.6/10 | |
Ghosting Score | |||
Ghosting Score | 8/10 | 7.6/10 | |
TEXT & IMAGE CLARITY | |||
|---|---|---|---|
Pixels Per Inch | |||
Pixels Per Inch | 163 PPI | 163 PPI | |
Coating | |||
Coating | Matte | Matte | |
Text Clarity Score | |||
Text Clarity Score | 8/10 | 8/10 | |
Image Clarity Score | |||
Image Clarity Score | 8/10 | 8/10 | |
PORTS & CONNECTIVITY | |||
|---|---|---|---|
HDMI 1.4 Ports | |||
HDMI 1.4 Ports | 0 | 1 | |
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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