A comparison of specs, key information, reviews, and best pricing from top retailers
Last updated -- hours ago | Report incorrect information
Company ProductName Specs
Company ProductName Specs
What we think
The PerfectRec monitor team Learn more
Updated April 22, 2024·
If you're a competitive gamer looking for top performance, the Acer X27U's higher refresh rate and better response time make it a solid choice, offering smoother gameplay and less ghosting. It's also better for HDR gaming and media consumption with higher brightness in HDR. However, for professional photo editing, the ViewSonic XG321UG might be preferable due to its more accurate colors and suitability for print photo editing, but it isn't as suited for competitive gaming. The Acer offers better overall gaming performance and HDR capability, while the ViewSonic excels in color-critical work but falls behind in gaming features. 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 X27U (W-OLED)
- Best in class for casual gaming
- Very good for competitive gaming
- Good for media consumption
- Very good refresh rate
- Best in class contrast
- Best in class response time
Advantages of the ViewSonic XG321UG (IPS Mini LED)
- Good for productivity
- Good text clarity
- Good brightness
Key differences
Casual Gaming
9.5
6.4
2560 x 1440
RESOLUTION
3440 x 2160
240Hz
REFRESH RATE
144Hz
Inf:1
NATIVE CONTRAST
1000:1
211 nits
SDR PEAK BRIGHTNESS
400 nits
603 nits
HDR PEAK BRIGHTNESS
1400 nits
95.5 %
DCI-P3 COLOR GAMUT
Matte
COATING
Matte
The Acer X27U (W-OLED) is best in class for casual gaming, while the ViewSonic XG321UG (IPS Mini LED) is only fair.
Competitive Gaming
8.8
4.6
240Hz
REFRESH RATE
144Hz
1.4 ms
TOTAL RESPONSE TIME
3.6 ms
20 - 240 Hz
VARIABLE REFRESH RATE
48,144 Hz
No
STROBING / BFI
No
211 nits
SDR PEAK BRIGHTNESS
400 nits
The Acer X27U (W-OLED) is very good for competitive gaming, while the ViewSonic XG321UG (IPS Mini LED) is poor.
Productivity
5.8
7.9
2560 x 1440
RESOLUTION
3440 x 2160
111 PPI
PIXELS PER INCH
137 PPI
Yes
ADJUSTABLE STAND
Yes
Matte
COATING
Matte
The ViewSonic XG321UG (IPS Mini LED) is good for productivity, while the Acer X27U (W-OLED) is poor.
Media Consumption
7.5
6.7
2560 x 1440
RESOLUTION
3440 x 2160
Inf:1
NATIVE CONTRAST
1000:1
211 nits
SDR PEAK BRIGHTNESS
400 nits
603 nits
HDR PEAK BRIGHTNESS
1400 nits
Matte
COATING
Matte
The Acer X27U (W-OLED) is good for media consumption, while the ViewSonic XG321UG (IPS Mini LED) is only fair.
Cost
$1,000
$2,300
$500
$1,000
$1,500
$2,000
$2,500
$3,000
$3,500
The Acer X27U (W-OLED) has a price of $1,000 and the ViewSonic XG321UG (IPS Mini LED) costs $2,300.
HDR Gaming and Media Consumption
Yes
No
The Acer X27U (W-OLED) is suitable for HDR gaming and media consumption while the ViewSonic XG321UG (IPS Mini LED) is not suitable for HDR gaming and media consumption.
Digital Photo Editing
Yes
No
The Acer X27U (W-OLED) is suitable for digital photo editing while the ViewSonic XG321UG (IPS Mini LED) is not suitable for digital photo editing.
Print Photo Editing
No
Yes
The Acer X27U (W-OLED) is not suitable for print photo editing while the ViewSonic XG321UG (IPS Mini LED) is suitable for print photo editing.
Key similarities
HDR Video Editing and Color Grading
No
No
Both the Acer X27U (W-OLED) and ViewSonic XG321UG (IPS Mini LED) are not suitable for HDR video editing and color grading.
Give feedback
We’re constantly working to improve.
How the Acer X27U (W-OLED) and the ViewSonic XG321UG (IPS Mini LED) compare to other monitors
Spec Comparison
 |  | |
| Acer X27U (W-OLED) | ViewSonic XG321UG (IPS Mini LED) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$1,000 | $2,300 | ||
Screen Size | |||
Screen Size | 27" | 32" | |
Resolution | |||
Resolution | 2560 x 1440 | 3440 x 2160 | |
Screen Type | |||
Screen Type | OLED | Mini LED | |
Screen Sub-type | |||
Screen Sub-type | W-OLED | IPS | |
Local Dimming Zones | |||
Local Dimming Zones | N/A | 1152 | |
COLOR, CONTRAST & BRIGHTNESS | |||
|---|---|---|---|
Native Contrast | |||
Native Contrast | Inf:1 | 1000:1 | |
SDR Peak Brightness | |||
SDR Peak Brightness | 211 nits | 400 nits | |
HDR Peak Brightness | |||
HDR Peak Brightness | 603 nits | 1400 nits | |
Suitable for HDR Gaming and Media Consumption | |||
Suitable for HDR Gaming and Media Consumption | Yes | No | |
sRGB Color Gamut | |||
sRGB Color Gamut | 100 % | ||
MOTION CHARACTERISTICS | |||
|---|---|---|---|
Total Response Time | |||
Total Response Time | 1.4 ms | 3.6 ms | |
Variable Refresh Rate | |||
Variable Refresh Rate | 20 - 240 Hz | 48,144 Hz | |
Strobing / BFI | |||
Strobing / BFI | No | No | |
Persistence Blur Score | |||
Persistence Blur Score | 8/10 | 6.6/10 | |
Ghosting Score | |||
Ghosting Score | 9.5/10 | 8.4/10 | |
TEXT & IMAGE CLARITY | |||
|---|---|---|---|
Pixels Per Inch | |||
Pixels Per Inch | 111 PPI | 137 PPI | |
Coating | |||
Coating | Matte | Matte | |
Text Clarity Score | |||
Text Clarity Score | 6.7/10 | 7.9/10 | |
Image Clarity Score | |||
Image Clarity Score | 7.2/10 | 7.9/10 | |
PORTS & CONNECTIVITY | |||
|---|---|---|---|
HDMI 1.4 Ports | |||
HDMI 1.4 Ports | 0 | 0 | |
HDMI 2.0 Ports | |||
HDMI 2.0 Ports | 2 | 2 | |
HDMI 2.1 Ports | |||
HDMI 2.1 Ports | 0 | 0 | |
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
More comparisons for you
Compare Acer X27U (W-OLED) vs. LG 27GR95QE (W-OLED)
VS
Compare Acer X27U (W-OLED) vs. Asus PA329C (IPS)
VS
Compare Acer X27U (W-OLED) vs. ViewSonic VX2776 2K OLED (W-OLED)
VS
Compare ViewSonic XG321UG (IPS Mini LED) vs. AOC PD49 (QD-OLED)
VS
Compare ViewSonic XG321UG (IPS Mini LED) vs. Asus PA27DCE (W-OLED)
VS
Compare ViewSonic XG321UG (IPS Mini LED) vs. LG 27EQ850 (W-OLED)
VS
FAQs
Why trust us
This information was produced and vetted by the PerfectRec monitors team. We are a product research and recommendation organization that meticulously reviews and evaluates the latest monitor information and makes it digestible for you.
By the numbers
210
Monitors evaluated
10,500
Monitors stats compiled
15
Proprietary Monitors ratings developed
116,900
Recommendations made
17,535
Consumer hours saved
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.
Featured in
