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What we think
The PerfectRec monitor team Learn more
Updated April 22, 2024·
If you're a competitive gamer who values ultra-wide immersive experiences, the Acer Predator X45 with its OLED panel and faster response time will offer a superior gaming experience; just keep in mind the text clarity and image sharpness are not the best for productivity tasks. On the other hand, the CoolerMaster GP27U, while less costly, boasts a higher screen resolution and excellent image clarity that makes it better suited for productivity and digital photo editing. Its performance in casual gaming is very good, but for fast-paced competitive games, it doesn't match the Predator X45. Both monitors support HDR content well, with the Predator likely having an edge in HDR gaming. Choose the CoolerMaster for a balance of high resolution, productivity, and media consumption, or opt for the Acer for a premium gaming-focused display. 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 Acer Predator X45 (W-OLED)
- Best in class for casual gaming
- Very good refresh rate
- Best in class contrast
- Best in class brightness
- 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 color volume
Key differences
Casual Gaming
9.8
8.0
3440 x 1440
RESOLUTION
3840 x 2160
240Hz
REFRESH RATE
160Hz
Inf:1
NATIVE CONTRAST
1072:1
1000 nits
SDR PEAK BRIGHTNESS
697 nits
Unknown
HDR PEAK BRIGHTNESS
1550 nits
98.5 %
DCI-P3 COLOR GAMUT
N/A
Matte
COATING
Matte
The Acer Predator X45 (W-OLED) is best in class for casual gaming, while the CoolerMaster GP27U (IPS MiniLED) is very good.
Competitive Gaming
6.4
5.9
240Hz
REFRESH RATE
160Hz
0.0 ms
TOTAL RESPONSE TIME
6.2 ms
48 - 240 Hz
VARIABLE REFRESH RATE
20 - 160 Hz
No
STROBING / BFI
No
1000 nits
SDR PEAK BRIGHTNESS
697 nits
The Acer Predator X45 (W-OLED) is only fair for competitive gaming, while the CoolerMaster GP27U (IPS MiniLED) is poor.
Productivity
4.0
9.8
3440 x 1440
RESOLUTION
3840 x 2160
83 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 Acer Predator X45 (W-OLED) is poor.
Media Consumption
7.1
8.0
3440 x 1440
RESOLUTION
3840 x 2160
Inf:1
NATIVE CONTRAST
1072:1
1000 nits
SDR PEAK BRIGHTNESS
697 nits
Unknown
HDR PEAK BRIGHTNESS
1550 nits
Matte
COATING
Matte
The CoolerMaster GP27U (IPS MiniLED) is very good for media consumption, while the Acer Predator X45 (W-OLED) is good.
Cost
$1,200
$770
$400
$600
$800
$1,000
$1,200
$1,400
$1,600
$1,800
The Acer Predator X45 (W-OLED) has a price of $1,200 and the CoolerMaster GP27U (IPS MiniLED) costs $770.
Digital Photo Editing
Yes
No
The Acer Predator X45 (W-OLED) is suitable for digital photo editing while the CoolerMaster GP27U (IPS MiniLED) is not suitable for digital photo editing.
HDR Video Editing and Color Grading
Yes
No
The Acer Predator X45 (W-OLED) is suitable for HDR video editing and color grading while the CoolerMaster GP27U (IPS MiniLED) is not suitable for HDR video editing and color grading.
Key similarities
HDR Gaming and Media Consumption
Yes
Yes
Both the Acer Predator X45 (W-OLED) and CoolerMaster GP27U (IPS MiniLED) are suitable for HDR gaming and media consumption.
Print Photo Editing
Yes
Yes
Both the Acer Predator X45 (W-OLED) and CoolerMaster GP27U (IPS MiniLED) are suitable for print photo editing.
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We’re constantly working to improve.
How the Acer Predator X45 (W-OLED) and the CoolerMaster GP27U (IPS MiniLED) compare to other monitors
Spec Comparison
 |  | |
| Acer Predator X45 (W-OLED) | CoolerMaster GP27U (IPS MiniLED) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$1,200 | $770 | ||
Screen Size | |||
Screen Size | 45" | 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 | 1000 nits | 697 nits | |
HDR Peak Brightness | |||
HDR Peak Brightness | Unknown | 1550 nits | |
Suitable for HDR Gaming and Media Consumption | |||
Suitable for HDR Gaming and Media Consumption | Yes | Yes | |
sRGB Color Gamut | |||
sRGB Color Gamut | Unknown | 95.1 % | |
MOTION CHARACTERISTICS | |||
|---|---|---|---|
Total Response Time | |||
Total Response Time | 0.01 ms | 6.2 ms | |
Variable Refresh Rate | |||
Variable Refresh Rate | 48 - 240 Hz | 20 - 160 Hz | |
Strobing / BFI | |||
Strobing / BFI | No | No | |
Persistence Blur Score | |||
Persistence Blur Score | 8/10 | 7/10 | |
Ghosting Score | |||
Ghosting Score | 10/10 | 8/10 | |
TEXT & IMAGE CLARITY | |||
|---|---|---|---|
Pixels Per Inch | |||
Pixels Per Inch | 83 PPI | 163 PPI | |
Coating | |||
Coating | Matte | Matte | |
Text Clarity Score | |||
Text Clarity Score | 3.8/10 | 8/10 | |
Image Clarity Score | |||
Image Clarity Score | 4.9/10 | 8/10 | |
PORTS & CONNECTIVITY | |||
|---|---|---|---|
HDMI 1.4 Ports | |||
HDMI 1.4 Ports | 0 | 0 | |
HDMI 2.0 Ports | |||
HDMI 2.0 Ports | 2 | 0 | |
HDMI 2.1 Ports | |||
HDMI 2.1 Ports | 0 | 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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