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What we think
The PerfectRec monitor team Learn more
Updated April 11, 2024·
If you prioritize competitive gaming and have a larger budget, the AOC AG456UCZD with its faster response time and higher refresh rate offers a smoother gaming experience. However, if you're focused on productivity and media consumption, and are looking for a more affordable option, the Dell S2721QS with its sharper text quality and higher resolution may be a better fit, though it's less suited for fast-paced gaming due to its lower refresh rate. The AOC's OLED panel also provides superior contrast and is great for HDR gaming and media, while the Dell's IPS panel offers strong photo editing capabilities with its color accuracy. 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 AOC AG456UCZD (W-OLED)
- Best in class for casual gaming
- Very good refresh rate
- Best in class contrast
- Best in class response time
Advantages of the Dell S2721QS (IPS)
- Good for productivity
- Very good text clarity
- Very good image clarity
Key differences
Casual Gaming
9.6
5.9
3440 x 1440
RESOLUTION
3840 x 2160
240Hz
REFRESH RATE
60Hz
Inf:1
NATIVE CONTRAST
1221:1
200 nits
SDR PEAK BRIGHTNESS
373 nits
Unknown
HDR PEAK BRIGHTNESS
386 nits
98.5 %
DCI-P3 COLOR GAMUT
85.2 %
Matte
COATING
Matte
The AOC AG456UCZD (W-OLED) is best in class for casual gaming, while the Dell S2721QS (IPS) is poor.
Competitive Gaming
6.0
4.9
240Hz
REFRESH RATE
60Hz
0.0 ms
TOTAL RESPONSE TIME
14.5 ms
48 - 240 Hz
VARIABLE REFRESH RATE
40 - 60 Hz
No
STROBING / BFI
No
200 nits
SDR PEAK BRIGHTNESS
373 nits
The AOC AG456UCZD (W-OLED) is only fair for competitive gaming, while the Dell S2721QS (IPS) is poor.
Productivity
3.8
7.9
3440 x 1440
RESOLUTION
3840 x 2160
83 PPI
PIXELS PER INCH
164 PPI
Yes
ADJUSTABLE STAND
Yes
Matte
COATING
Matte
The Dell S2721QS (IPS) is good for productivity, while the AOC AG456UCZD (W-OLED) is poor.
Media Consumption
5.9
6.7
3440 x 1440
RESOLUTION
3840 x 2160
Inf:1
NATIVE CONTRAST
1221:1
200 nits
SDR PEAK BRIGHTNESS
373 nits
Unknown
HDR PEAK BRIGHTNESS
386 nits
Matte
COATING
Matte
The Dell S2721QS (IPS) is only fair for media consumption, while the AOC AG456UCZD (W-OLED) is poor.
Cost
$1,400
$230
$0
$500
$1,000
$1,500
$2,000
$2,500
The AOC AG456UCZD (W-OLED) has a price of $1,400 and the Dell S2721QS (IPS) costs $230.
HDR Gaming and Media Consumption
Yes
No
The AOC AG456UCZD (W-OLED) is suitable for HDR gaming and media consumption while the Dell S2721QS (IPS) is not suitable for HDR gaming and media consumption.
Print Photo Editing
Yes
No
The AOC AG456UCZD (W-OLED) is suitable for print photo editing while the Dell S2721QS (IPS) is not suitable for print photo editing.
Key similarities
Digital Photo Editing
Yes
Yes
Both the AOC AG456UCZD (W-OLED) and Dell S2721QS (IPS) are suitable for digital photo editing.
HDR Video Editing and Color Grading
No
No
Both the AOC AG456UCZD (W-OLED) and Dell S2721QS (IPS) are not suitable for HDR video editing and color grading.
Give feedback
We’re constantly working to improve.
How the AOC AG456UCZD (W-OLED) and the Dell S2721QS (IPS) compare to other monitors
Spec Comparison
 |  | |
| AOC AG456UCZD (W-OLED) | Dell S2721QS (IPS) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$1,400 | $230 | ||
Screen Size | |||
Screen Size | 44.5" | 27" | |
Resolution | |||
Resolution | 3440 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 | 200 nits | 373 nits | |
HDR Peak Brightness | |||
HDR Peak Brightness | Unknown | 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 | 0.03 ms | 14.5 ms | |
Variable Refresh Rate | |||
Variable Refresh Rate | 48 - 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 | 10/10 | 6/10 | |
TEXT & IMAGE CLARITY | |||
|---|---|---|---|
Pixels Per Inch | |||
Pixels Per Inch | 83 PPI | 164 PPI | |
Coating | |||
Coating | Matte | Matte | |
Text Clarity Score | |||
Text Clarity Score | 3.8/10 | 8.1/10 | |
Image Clarity Score | |||
Image Clarity Score | 4.9/10 | 8.1/10 | |
PORTS & CONNECTIVITY | |||
|---|---|---|---|
HDMI 1.4 Ports | |||
HDMI 1.4 Ports | 0 | 0 | |
HDMI 2.0 Ports | |||
HDMI 2.0 Ports | 0 | 2 | |
HDMI 2.1 Ports | |||
HDMI 2.1 Ports | 3 | 0 | |
Micro HDMI Ports | |||
Micro HDMI Ports | 0 | 0 | |
DisplayPort 1.2 Ports | |||
DisplayPort 1.2 Ports | 0 | 1 | |
Shopping
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."
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Joe is an entrepreneur and lifelong electronics enthusiast with a Ph.D in Economics from the University of Michigan.
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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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