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What we think
The PerfectRec monitor team Learn more
Updated April 11, 2024·
If you're a competitive gamer, the Asus PG34WCDM with its OLED panel and higher refresh rate provides a smoother and more immersive gaming experience due to better contrast and faster response times, but it's not as suitable for productivity due to poorer brightness uniformity. On the other hand, the CoolerMaster GP27U offers crisp image quality with its higher resolution and is excellent for productivity, as well as casual gaming and media consumption, with better peak brightness and color accuracy for digital photo editing; all this comes at a relatively lower cost, making it a more budget-friendly option with a well-rounded feature set. 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 Asus PG34WCDM (W-OLED)
- Best in class for casual gaming
- Very good refresh rate
- Best in class contrast
- Best in class response time
Advantages of the CoolerMaster GP27U (IPS MiniLED)
- Best in class for productivity
- Very good for media consumption
- Very good text clarity
- Very good image clarity
- Very good brightness
- Very good color volume
Key differences
Casual Gaming
9.5
8.0
3440 x 1440
RESOLUTION
3840 x 2160
240Hz
REFRESH RATE
160Hz
Inf:1
NATIVE CONTRAST
1072:1
238 nits
SDR PEAK BRIGHTNESS
697 nits
716 nits
HDR PEAK BRIGHTNESS
1550 nits
96.6 %
DCI-P3 COLOR GAMUT
N/A
Matte
COATING
Matte
The Asus PG34WCDM (W-OLED) is best in class for casual gaming, while the CoolerMaster GP27U (IPS MiniLED) is very good.
Productivity
5.7
9.8
3440 x 1440
RESOLUTION
3840 x 2160
109 PPI
PIXELS PER INCH
163 PPI
Yes
ADJUSTABLE STAND
Yes
Matte
COATING
Matte
The CoolerMaster GP27U (IPS MiniLED) is best in class for productivity, while the Asus PG34WCDM (W-OLED) is poor.
Cost
$1,300
$770
$0
$500
$1,000
$1,500
$2,000
The Asus PG34WCDM (W-OLED) has a price of $1,300 and the CoolerMaster GP27U (IPS MiniLED) costs $770.
Digital Photo Editing
Yes
No
The Asus PG34WCDM (W-OLED) is suitable for digital photo editing while the CoolerMaster GP27U (IPS MiniLED) is not suitable for digital photo editing.
Print Photo Editing
No
Yes
The Asus PG34WCDM (W-OLED) is not suitable for print photo editing while the CoolerMaster GP27U (IPS MiniLED) is suitable for print photo editing.
Key similarities
Competitive Gaming
5.6
5.9
240Hz
REFRESH RATE
160Hz
1.1 ms
TOTAL RESPONSE TIME
6.2 ms
20 - 240 Hz
VARIABLE REFRESH RATE
20 - 160 Hz
Yes
STROBING / BFI
No
238 nits
SDR PEAK BRIGHTNESS
697 nits
The CoolerMaster GP27U (IPS MiniLED) and Asus PG34WCDM (W-OLED) are both poor for competitive gaming.
Media Consumption
7.5
8.0
3440 x 1440
RESOLUTION
3840 x 2160
Inf:1
NATIVE CONTRAST
1072:1
238 nits
SDR PEAK BRIGHTNESS
697 nits
716 nits
HDR PEAK BRIGHTNESS
1550 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 Asus PG34WCDM (W-OLED) is good.
HDR Gaming and Media Consumption
Yes
Yes
Both the Asus PG34WCDM (W-OLED) and CoolerMaster GP27U (IPS MiniLED) are suitable for HDR gaming and media consumption.
HDR Video Editing and Color Grading
No
No
Both the Asus PG34WCDM (W-OLED) and CoolerMaster GP27U (IPS MiniLED) are not suitable for HDR video editing and color grading.
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We’re constantly working to improve.
How the Asus PG34WCDM (W-OLED) and the CoolerMaster GP27U (IPS MiniLED) compare to other monitors
Spec Comparison
 |  | |
| Asus PG34WCDM (W-OLED) | CoolerMaster GP27U (IPS MiniLED) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$1,300 | $770 | ||
Screen Size | |||
Screen Size | 34" | 27" | |
Resolution | |||
Resolution | 3440 x 1440 | 3840 x 2160 | |
Screen Type | |||
Screen Type | OLED | MiniLED | |
Screen Sub-type | |||
Screen Sub-type | W-OLED | IPS | |
Local Dimming Zones | |||
Local Dimming Zones | N/A | 576 | |
COLOR, CONTRAST & BRIGHTNESS | |||
|---|---|---|---|
Native Contrast | |||
Native Contrast | Inf:1 | 1072:1 | |
SDR Peak Brightness | |||
SDR Peak Brightness | 238 nits | 697 nits | |
HDR Peak Brightness | |||
HDR Peak Brightness | 716 nits | 1550 nits | |
Suitable for HDR Gaming and Media Consumption | |||
Suitable for HDR Gaming and Media Consumption | Yes | Yes | |
sRGB Color Gamut | |||
sRGB Color Gamut | 100 % | 95.1 % | |
MOTION CHARACTERISTICS | |||
|---|---|---|---|
Total Response Time | |||
Total Response Time | 1.1 ms | 6.2 ms | |
Variable Refresh Rate | |||
Variable Refresh Rate | 20 - 240 Hz | 20 - 160 Hz | |
Strobing / BFI | |||
Strobing / BFI | Yes | No | |
Persistence Blur Score | |||
Persistence Blur Score | 8/10 | 7/10 | |
Ghosting Score | |||
Ghosting Score | 9.6/10 | 8/10 | |
TEXT & IMAGE CLARITY | |||
|---|---|---|---|
Pixels Per Inch | |||
Pixels Per Inch | 109 PPI | 163 PPI | |
Coating | |||
Coating | Matte | Matte | |
Text Clarity Score | |||
Text Clarity Score | 6.6/10 | 8/10 | |
Image Clarity Score | |||
Image Clarity Score | 7/10 | 8/10 | |
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)
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."
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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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