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What we think
The PerfectRec monitor team Learn more
Updated April 11, 2024·
If you prioritize high-end gaming performance and are willing to invest in a premium monitor, the AOC AG456UCZD with its OLED panel offers excellent color depth, contrasts, and response times, making it a top choice for both HDR gaming and media consumption. The larger screen and ultrawide aspect also enhance immersive experiences. Conversely, the Dell S2721DGF is a more budget-friendly IPS monitor that still delivers good performance for casual gaming and productivity, with decent color accuracy for digital photo editing. It won't match the AOC's superior dark room performance or wide color gamut, but it is a well-rounded choice for a variety of tasks. 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 S2721DGF (IPS)
- Good text clarity
- Good image clarity
Key differences
Casual Gaming
9.6
5.9
3440 x 1440
RESOLUTION
2560 x 1440
240Hz
REFRESH RATE
165Hz
Inf:1
NATIVE CONTRAST
882:1
200 nits
SDR PEAK BRIGHTNESS
368 nits
Unknown
HDR PEAK BRIGHTNESS
485 nits
98.5 %
DCI-P3 COLOR GAMUT
97.2 %
Matte
COATING
Matte
The AOC AG456UCZD (W-OLED) is best in class for casual gaming, while the Dell S2721DGF (IPS) is poor.
Productivity
3.8
6.2
3440 x 1440
RESOLUTION
2560 x 1440
83 PPI
PIXELS PER INCH
109 PPI
Yes
ADJUSTABLE STAND
Yes
Matte
COATING
Matte
The Dell S2721DGF (IPS) is only fair for productivity, while the AOC AG456UCZD (W-OLED) is poor.
Cost
$1,400
$300
$0
$500
$1,000
$1,500
$2,000
$2,500
The AOC AG456UCZD (W-OLED) has a price of $1,400 and the Dell S2721DGF (IPS) costs $300.
HDR Gaming and Media Consumption
Yes
No
The AOC AG456UCZD (W-OLED) is suitable for HDR gaming and media consumption while the Dell S2721DGF (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 S2721DGF (IPS) is not suitable for print photo editing.
Key similarities
Competitive Gaming
6.0
5.8
240Hz
REFRESH RATE
165Hz
0.0 ms
TOTAL RESPONSE TIME
6.3 ms
48 - 240 Hz
VARIABLE REFRESH RATE
20 - 165 Hz
No
STROBING / BFI
No
200 nits
SDR PEAK BRIGHTNESS
368 nits
Although they have very similar scores, PerfectRec considers AOC AG456UCZD (W-OLED) to be only fair for competitive gaming, while the Dell S2721DGF (IPS) is poor.
Media Consumption
5.9
5.9
3440 x 1440
RESOLUTION
2560 x 1440
Inf:1
NATIVE CONTRAST
882:1
200 nits
SDR PEAK BRIGHTNESS
368 nits
Unknown
HDR PEAK BRIGHTNESS
485 nits
Matte
COATING
Matte
The Dell S2721DGF (IPS) and AOC AG456UCZD (W-OLED) are both poor for media consumption.
Digital Photo Editing
Yes
Yes
Both the AOC AG456UCZD (W-OLED) and Dell S2721DGF (IPS) are suitable for digital photo editing.
HDR Video Editing and Color Grading
No
No
Both the AOC AG456UCZD (W-OLED) and Dell S2721DGF (IPS) are not suitable for HDR video editing and color grading.
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We’re constantly working to improve.
How the AOC AG456UCZD (W-OLED) and the Dell S2721DGF (IPS) compare to other monitors
Spec Comparison
 |  | |
| AOC AG456UCZD (W-OLED) | Dell S2721DGF (IPS) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$1,400 | $300 | ||
Screen Size | |||
Screen Size | 44.5" | 27" | |
Resolution | |||
Resolution | 3440 x 1440 | 2560 x 1440 | |
Screen Type | |||
Screen Type | OLED | LED | |
Screen Sub-type | |||
Screen Sub-type | W-OLED | IPS | |
Local Dimming Zones | |||
Local Dimming Zones | N/A | 8 | |
COLOR, CONTRAST & BRIGHTNESS | |||
|---|---|---|---|
Native Contrast | |||
Native Contrast | Inf:1 | 882:1 | |
SDR Peak Brightness | |||
SDR Peak Brightness | 200 nits | 368 nits | |
HDR Peak Brightness | |||
HDR Peak Brightness | Unknown | 485 nits | |
Suitable for HDR Gaming and Media Consumption | |||
Suitable for HDR Gaming and Media Consumption | Yes | No | |
sRGB Color Gamut | |||
sRGB Color Gamut | 100 % | 137.7 % | |
MOTION CHARACTERISTICS | |||
|---|---|---|---|
Total Response Time | |||
Total Response Time | 0.03 ms | 6.3 ms | |
Variable Refresh Rate | |||
Variable Refresh Rate | 48 - 240 Hz | 20 - 165 Hz | |
Strobing / BFI | |||
Strobing / BFI | No | No | |
Persistence Blur Score | |||
Persistence Blur Score | 8/10 | 7.1/10 | |
Ghosting Score | |||
Ghosting Score | 10/10 | 8/10 | |
TEXT & IMAGE CLARITY | |||
|---|---|---|---|
Pixels Per Inch | |||
Pixels Per Inch | 83 PPI | 109 PPI | |
Coating | |||
Coating | Matte | Matte | |
Text Clarity Score | |||
Text Clarity Score | 3.8/10 | 7/10 | |
Image Clarity Score | |||
Image Clarity Score | 4.9/10 | 7/10 | |
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 | 0 | |
Shopping
Dell S2721DGF (IPS)
See more
Dig into reviews and images
Tom's Hardware
Christian Eberle | January 2021
"The Dell S2721DGF checks all the boxes for an upper-mid priced display that can take on the best gaming monitors, and you might even be able to find it for under $500 (it's $450-$500 as of writing). The monitor's 1440p, runs at 165 Hz without overclock, has AMD FreeSync Premium Pro and G-Sync Compatibility, covers a large portion of the DCI-P3 color gamut and includes a lighting effect on the back."
Give feedback
We're constantly perfecting our model
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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
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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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