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What we think
The PerfectRec monitor team Learn more
Updated April 23, 2024·
If you prioritize a larger, ultrawide screen for immersive gaming and multitasking, the Acer Predator X45 could be a great choice, but note that it's more expensive and may not provide the sharpest text quality for reading or productivity. On the other hand, the MSI MPG 321URX offers a crisp 4K resolution which is better for detailed work and media consumption, and it comes at a lower cost. Both have excellent color and contrast for HDR gaming and video editing, but for competitive gaming, their high refresh rates and response times are a plus; however, the smaller MSI might have an edge in pixel density for sharper images. 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)
- The Acer Predator X45 (W-OLED) has no clear advantages over the MSI MPG 321URX (QD-OLED).
Advantages of the MSI MPG 321URX (QD-OLED)
- Good for productivity
- Best in class for media consumption
- Good image clarity
- Best in class color volume
Key differences
Productivity
4.0
7.6
3440 x 1440
RESOLUTION
3840 x 2160
83 PPI
PIXELS PER INCH
139 PPI
Yes
ADJUSTABLE STAND
Yes
Matte
COATING
Matte
The MSI MPG 321URX (QD-OLED) is good for productivity, while the Acer Predator X45 (W-OLED) is poor.
Media Consumption
7.1
10.0
3440 x 1440
RESOLUTION
3840 x 2160
Inf:1
NATIVE CONTRAST
Inf:1
1000 nits
SDR PEAK BRIGHTNESS
1000 nits
Unknown
HDR PEAK BRIGHTNESS
Unknown
Matte
COATING
Matte
The MSI MPG 321URX (QD-OLED) is best in class for media consumption, while the Acer Predator X45 (W-OLED) is good.
Cost
$1,200
$950
$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 MSI MPG 321URX (QD-OLED) costs $950.
Key similarities
Casual Gaming
9.8
9.9
3440 x 1440
RESOLUTION
3840 x 2160
240Hz
REFRESH RATE
240Hz
Inf:1
NATIVE CONTRAST
Inf:1
1000 nits
SDR PEAK BRIGHTNESS
1000 nits
Unknown
HDR PEAK BRIGHTNESS
Unknown
98.5 %
DCI-P3 COLOR GAMUT
99.0 %
Matte
COATING
Matte
The MSI MPG 321URX (QD-OLED) and Acer Predator X45 (W-OLED) are both best in class for casual gaming.
Competitive Gaming
6.4
6.8
240Hz
REFRESH RATE
240Hz
0.0 ms
TOTAL RESPONSE TIME
0.0 ms
48 - 240 Hz
VARIABLE REFRESH RATE
48 - 240 Hz
No
STROBING / BFI
No
1000 nits
SDR PEAK BRIGHTNESS
1000 nits
The MSI MPG 321URX (QD-OLED) and Acer Predator X45 (W-OLED) are both only fair for competitive gaming.
HDR Gaming and Media Consumption
Yes
Yes
Both the Acer Predator X45 (W-OLED) and MSI MPG 321URX (QD-OLED) are suitable for HDR gaming and media consumption.
Digital Photo Editing
Yes
Yes
Both the Acer Predator X45 (W-OLED) and MSI MPG 321URX (QD-OLED) are suitable for digital photo editing.
HDR Video Editing and Color Grading
Yes
Yes
Both the Acer Predator X45 (W-OLED) and MSI MPG 321URX (QD-OLED) are suitable for HDR video editing and color grading.
Print Photo Editing
Yes
Yes
Both the Acer Predator X45 (W-OLED) and MSI MPG 321URX (QD-OLED) are suitable for print photo editing.
Give feedback
We’re constantly working to improve.
How the Acer Predator X45 (W-OLED) and the MSI MPG 321URX (QD-OLED) compare to other monitors
Spec Comparison
 |  | |
| Acer Predator X45 (W-OLED) | MSI MPG 321URX (QD-OLED) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$1,200 | $950 | ||
Screen Size | |||
Screen Size | 45" | 32" | |
Resolution | |||
Resolution | 3440 x 1440 | 3840 x 2160 | |
Screen Type | |||
Screen Type | OLED | OLED | |
Screen Sub-type | |||
Screen Sub-type | W-OLED | QD-OLED | |
Refresh Rate | |||
Refresh Rate | 240Hz | 240Hz | |
COLOR, CONTRAST & BRIGHTNESS | |||
|---|---|---|---|
Native Contrast | |||
Native Contrast | Inf:1 | Inf:1 | |
SDR Peak Brightness | |||
SDR Peak Brightness | 1000 nits | 1000 nits | |
HDR Peak Brightness | |||
HDR Peak Brightness | Unknown | Unknown | |
Suitable for HDR Gaming and Media Consumption | |||
Suitable for HDR Gaming and Media Consumption | Yes | Yes | |
sRGB Color Gamut | |||
sRGB Color Gamut | Unknown | 138.2 % | |
MOTION CHARACTERISTICS | |||
|---|---|---|---|
Total Response Time | |||
Total Response Time | 0.01 ms | 0.03 ms | |
Variable Refresh Rate | |||
Variable Refresh Rate | 48 - 240 Hz | 48 - 240 Hz | |
Strobing / BFI | |||
Strobing / BFI | No | No | |
Persistence Blur Score | |||
Persistence Blur Score | 8/10 | 8/10 | |
Ghosting Score | |||
Ghosting Score | 10/10 | 10/10 | |
TEXT & IMAGE CLARITY | |||
|---|---|---|---|
Pixels Per Inch | |||
Pixels Per Inch | 83 PPI | 139 PPI | |
Coating | |||
Coating | Matte | Matte | |
Text Clarity Score | |||
Text Clarity Score | 3.8/10 | 6.9/10 | |
Image Clarity Score | |||
Image Clarity Score | 4.9/10 | 7.9/10 | |
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 | |
Give feedback
We're constantly perfecting our model
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CEO and Monitors Editor
Joe is an entrepreneur and lifelong electronics enthusiast with a Ph.D in Economics from the University of Michigan.
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Staff Expert & Software Engineer
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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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