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What we think
The PerfectRec monitor team Learn more
Updated April 11, 2024·
If competitive gaming is a priority for you and you need a higher refresh rate, the Acer XB323U-GX offers better performance with its quicker response time, albeit at a higher cost. However, if you're invested in high-quality media consumption and productivity with crisp image clarity, and are interested in a monitor capable of true HDR, the Sony M9 may be a wiser choice, offering better HDR capability and a sharper 4K resolution, all at a lower price point. The choice between the two should be guided by whether you prioritize gaming performance or media and productivity quality. 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 XB323U-GX (IPS)
- Very good refresh rate
Advantages of the Sony M9 (IPS FALD)
- Good for casual gaming
- Best in class for productivity
- Good for media consumption
- Very good text clarity
- Very good image clarity
- Good contrast
- Good color volume
Key differences
Casual Gaming
5.9
7.3
2560 x 1440
RESOLUTION
3840 x 2160
270Hz
REFRESH RATE
144Hz
1000:1
NATIVE CONTRAST
1000:1
400 nits
SDR PEAK BRIGHTNESS
432 nits
600 nits
HDR PEAK BRIGHTNESS
695 nits
95.0 %
DCI-P3 COLOR GAMUT
67.7 %
Matte
COATING
Matte
The Sony M9 (IPS FALD) is good for casual gaming, while the Acer XB323U-GX (IPS) is poor.
Productivity
4.8
9.6
2560 x 1440
RESOLUTION
3840 x 2160
91 PPI
PIXELS PER INCH
163 PPI
Yes
ADJUSTABLE STAND
Yes
Matte
COATING
Matte
The Sony M9 (IPS FALD) is best in class for productivity, while the Acer XB323U-GX (IPS) is poor.
Media Consumption
5.4
7.5
2560 x 1440
RESOLUTION
3840 x 2160
1000:1
NATIVE CONTRAST
1000:1
400 nits
SDR PEAK BRIGHTNESS
432 nits
600 nits
HDR PEAK BRIGHTNESS
695 nits
Matte
COATING
Matte
The Sony M9 (IPS FALD) is good for media consumption, while the Acer XB323U-GX (IPS) is poor.
Cost
$1,147
$800
$400
$600
$800
$1,000
$1,200
$1,400
$1,600
$1,800
The Acer XB323U-GX (IPS) has a price of $1,147 and the Sony M9 (IPS FALD) costs $800.
HDR Gaming and Media Consumption
No
Yes
The Acer XB323U-GX (IPS) is not suitable for HDR gaming and media consumption while the Sony M9 (IPS FALD) is suitable for HDR gaming and media consumption.
Print Photo Editing
Yes
No
The Acer XB323U-GX (IPS) is suitable for print photo editing while the Sony M9 (IPS FALD) is not suitable for print photo editing.
Key similarities
Competitive Gaming
5.3
5.7
270Hz
REFRESH RATE
144Hz
8.0 ms
TOTAL RESPONSE TIME
8.0 ms
48 - 270 Hz
VARIABLE REFRESH RATE
24 - 144 Hz
Yes
STROBING / BFI
No
400 nits
SDR PEAK BRIGHTNESS
432 nits
The Sony M9 (IPS FALD) and Acer XB323U-GX (IPS) are both poor for competitive gaming.
Digital Photo Editing
Yes
Yes
Both the Acer XB323U-GX (IPS) and Sony M9 (IPS FALD) are suitable for digital photo editing.
HDR Video Editing and Color Grading
No
No
Both the Acer XB323U-GX (IPS) and Sony M9 (IPS FALD) are not suitable for HDR video editing and color grading.
Give feedback
We’re constantly working to improve.
How the Acer XB323U-GX (IPS) and the Sony M9 (IPS FALD) compare to other monitors
Spec Comparison
 |  | |
| Acer XB323U-GX (IPS) | Sony M9 (IPS FALD) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$1,147 | $800 | ||
Screen Size | |||
Screen Size | 32" | 27" | |
Resolution | |||
Resolution | 2560 x 1440 | 3840 x 2160 | |
Screen Type | |||
Screen Type | LED | LED | |
Screen Sub-type | |||
Screen Sub-type | IPS | IPS FALD | |
Local Dimming Zones | |||
Local Dimming Zones | 16 | 96 | |
COLOR, CONTRAST & BRIGHTNESS | |||
|---|---|---|---|
Native Contrast | |||
Native Contrast | 1000:1 | 1000:1 | |
SDR Peak Brightness | |||
SDR Peak Brightness | 400 nits | 432 nits | |
HDR Peak Brightness | |||
HDR Peak Brightness | 600 nits | 695 nits | |
Suitable for HDR Gaming and Media Consumption | |||
Suitable for HDR Gaming and Media Consumption | No | Yes | |
sRGB Color Gamut | |||
sRGB Color Gamut | 173.4 % | 100 % | |
MOTION CHARACTERISTICS | |||
|---|---|---|---|
Total Response Time | |||
Total Response Time | 8 ms | 8 ms | |
Variable Refresh Rate | |||
Variable Refresh Rate | 48 - 270 Hz | 24 - 144 Hz | |
Strobing / BFI | |||
Strobing / BFI | Yes | No | |
Persistence Blur Score | |||
Persistence Blur Score | 8.5/10 | 6.6/10 | |
Ghosting Score | |||
Ghosting Score | 7.6/10 | 7.6/10 | |
TEXT & IMAGE CLARITY | |||
|---|---|---|---|
Pixels Per Inch | |||
Pixels Per Inch | 91 PPI | 163 PPI | |
Coating | |||
Coating | Matte | Matte | |
Text Clarity Score | |||
Text Clarity Score | 6.1/10 | 8/10 | |
Image Clarity Score | |||
Image Clarity Score | 6.1/10 | 8/10 | |
PORTS & CONNECTIVITY | |||
|---|---|---|---|
HDMI 1.4 Ports | |||
HDMI 1.4 Ports | 0 | 1 | |
HDMI 2.0 Ports | |||
HDMI 2.0 Ports | 1 | 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 | 1 | 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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