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What we think
The PerfectRec monitor team Learn more
Updated April 11, 2024·
If you prioritize gaming, particularly with fast response times and variable refresh rates, the Asus PG27AQDM with OLED technology offers excellent contrast and colors for immersive experiences, but is less suited for day-to-day productivity due to its lower brightness and less sharp text. On the other hand, the Dell S2721QS is more affordable and provides sharper images and text, making it better for productivity and media with its higher resolution, but its lower refresh rate and response time make it less ideal for competitive gaming. Neither is perfect for HDR video editing, but for casual content consumption, the Asus offers a more vibrant experience. 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 PG27AQDM (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
- Excellent response time
Advantages of the Dell S2721QS (IPS)
- Good for productivity
- Very good text clarity
- Very good image clarity
Key differences
Casual Gaming
9.5
5.9
2560 x 1440
RESOLUTION
3840 x 2160
240Hz
REFRESH RATE
60Hz
Inf:1
NATIVE CONTRAST
1221:1
162 nits
SDR PEAK BRIGHTNESS
373 nits
963 nits
HDR PEAK BRIGHTNESS
386 nits
97.2 %
DCI-P3 COLOR GAMUT
85.2 %
Matte
COATING
Matte
The Asus PG27AQDM (W-OLED) is best in class for casual gaming, while the Dell S2721QS (IPS) is poor.
Competitive Gaming
8.6
4.9
240Hz
REFRESH RATE
60Hz
1.8 ms
TOTAL RESPONSE TIME
14.5 ms
20 - 240 Hz
VARIABLE REFRESH RATE
40 - 60 Hz
No
STROBING / BFI
No
162 nits
SDR PEAK BRIGHTNESS
373 nits
The Asus PG27AQDM (W-OLED) is very good for competitive gaming, while the Dell S2721QS (IPS) is poor.
Productivity
5.8
7.9
2560 x 1440
RESOLUTION
3840 x 2160
111 PPI
PIXELS PER INCH
164 PPI
Yes
ADJUSTABLE STAND
Yes
Matte
COATING
Matte
The Dell S2721QS (IPS) is good for productivity, while the Asus PG27AQDM (W-OLED) is poor.
Media Consumption
7.5
6.7
2560 x 1440
RESOLUTION
3840 x 2160
Inf:1
NATIVE CONTRAST
1221:1
162 nits
SDR PEAK BRIGHTNESS
373 nits
963 nits
HDR PEAK BRIGHTNESS
386 nits
Matte
COATING
Matte
The Asus PG27AQDM (W-OLED) is good for media consumption, while the Dell S2721QS (IPS) is only fair.
Cost
$899
$230
$0
$200
$400
$600
$800
$1,000
$1,200
$1,400
The Asus PG27AQDM (W-OLED) has a price of $899 and the Dell S2721QS (IPS) costs $230.
HDR Gaming and Media Consumption
Yes
No
The Asus PG27AQDM (W-OLED) is suitable for HDR gaming and media consumption while the Dell S2721QS (IPS) is not suitable for HDR gaming and media consumption.
Key similarities
Digital Photo Editing
Yes
Yes
Both the Asus PG27AQDM (W-OLED) and Dell S2721QS (IPS) are suitable for digital photo editing.
HDR Video Editing and Color Grading
No
No
Both the Asus PG27AQDM (W-OLED) and Dell S2721QS (IPS) are not suitable for HDR video editing and color grading.
Print Photo Editing
No
No
Both the Asus PG27AQDM (W-OLED) and Dell S2721QS (IPS) are not suitable for print photo editing.
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We’re constantly working to improve.
How the Asus PG27AQDM (W-OLED) and the Dell S2721QS (IPS) compare to other monitors
Spec Comparison
 |  | |
| Asus PG27AQDM (W-OLED) | Dell S2721QS (IPS) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$899 | $230 | ||
Screen Size | |||
Screen Size | 27" | 27" | |
Resolution | |||
Resolution | 2560 x 1440 | 3840 x 2160 | |
Screen Type | |||
Screen Type | OLED | LED | |
Screen Sub-type | |||
Screen Sub-type | W-OLED | IPS | |
Refresh Rate | |||
Refresh Rate | 240Hz | 60Hz | |
COLOR, CONTRAST & BRIGHTNESS | |||
|---|---|---|---|
Native Contrast | |||
Native Contrast | Inf:1 | 1221:1 | |
SDR Peak Brightness | |||
SDR Peak Brightness | 162 nits | 373 nits | |
HDR Peak Brightness | |||
HDR Peak Brightness | 963 nits | 386 nits | |
Suitable for HDR Gaming and Media Consumption | |||
Suitable for HDR Gaming and Media Consumption | Yes | No | |
sRGB Color Gamut | |||
sRGB Color Gamut | 100 % | 100 % | |
MOTION CHARACTERISTICS | |||
|---|---|---|---|
Total Response Time | |||
Total Response Time | 1.8 ms | 14.5 ms | |
Variable Refresh Rate | |||
Variable Refresh Rate | 20 - 240 Hz | 40 - 60 Hz | |
Strobing / BFI | |||
Strobing / BFI | No | No | |
Persistence Blur Score | |||
Persistence Blur Score | 8/10 | 5/10 | |
Ghosting Score | |||
Ghosting Score | 9.1/10 | 6/10 | |
TEXT & IMAGE CLARITY | |||
|---|---|---|---|
Pixels Per Inch | |||
Pixels Per Inch | 111 PPI | 164 PPI | |
Coating | |||
Coating | Matte | Matte | |
Text Clarity Score | |||
Text Clarity Score | 6.7/10 | 8.1/10 | |
Image Clarity Score | |||
Image Clarity Score | 7.2/10 | 8.1/10 | |
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 | 1 | |
Shopping
Asus PG27AQDM (W-OLED)
See more
Dig into reviews and images
Tom's Hardware
Christian Eberle | April 2023
"It’s hard to find any fault with the Asus ROG Swift PG27AQDM. Yes it’s expensive, but it’s incredibly good. With a stunning image and next-level video performance, it’s one of the very best gaming monitors I’ve ever reviewed."
Dell S2721QS (IPS)
See more
Dig into reviews and images
Tom's Hardware
Scharon Harding | September 2021
"The Dell S2721QS 4K monitor brings IPS-level colors and some handy features, like a versatile stand with height adjustments and picture-in-picture for connecting dual systems. But don’t get it for HDR."
Give feedback
We're constantly perfecting our model
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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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