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What we think
The PerfectRec monitor team Learn more
Updated April 11, 2024·
If high-end gaming is your priority, especially for fast-paced games where good response times and high refresh rates matter, the Acer X34V with its excellent contrast and color depth is an excellent choice. This monitor also excels in media consumption with its ultrawide screen and high brightness. On the other hand, if your focus is on productivity tasks and digital photo editing, the Dell S2721QS with its very clear text and higher resolution may be more suitable, and it comes at a lower cost. However, it doesn't match the Acer’s gaming and media performance and is not as suitable for HDR content. 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 X34V (QD-OLED)
- Best in class for casual gaming
- Best in class for media consumption
- Good refresh rate
- Best in class contrast
- Best in class color volume
- 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
175Hz
REFRESH RATE
60Hz
Inf:1
NATIVE CONTRAST
1221:1
250 nits
SDR PEAK BRIGHTNESS
373 nits
1000 nits
HDR PEAK BRIGHTNESS
386 nits
99.0 %
DCI-P3 COLOR GAMUT
85.2 %
Matte
COATING
Matte
The Acer X34V (QD-OLED) is best in class for casual gaming, while the Dell S2721QS (IPS) is poor.
Productivity
5.7
7.9
3440 x 1440
RESOLUTION
3840 x 2160
109 PPI
PIXELS PER INCH
164 PPI
Yes
ADJUSTABLE STAND
Yes
Matte
COATING
Matte
The Dell S2721QS (IPS) is good for productivity, while the Acer X34V (QD-OLED) is poor.
Media Consumption
9.5
6.7
3440 x 1440
RESOLUTION
3840 x 2160
Inf:1
NATIVE CONTRAST
1221:1
250 nits
SDR PEAK BRIGHTNESS
373 nits
1000 nits
HDR PEAK BRIGHTNESS
386 nits
Matte
COATING
Matte
The Acer X34V (QD-OLED) is best in class for media consumption, while the Dell S2721QS (IPS) is only fair.
Cost
$700
$230
$0
$200
$400
$600
$800
$1,000
$1,200
The Acer X34V (QD-OLED) has a price of $700 and the Dell S2721QS (IPS) costs $230.
HDR Gaming and Media Consumption
Yes
No
The Acer X34V (QD-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
Competitive Gaming
5.2
4.9
175Hz
REFRESH RATE
60Hz
1.0 ms
TOTAL RESPONSE TIME
14.5 ms
48 - 175 Hz
VARIABLE REFRESH RATE
40 - 60 Hz
No
STROBING / BFI
No
250 nits
SDR PEAK BRIGHTNESS
373 nits
The Acer X34V (QD-OLED) and Dell S2721QS (IPS) are both poor for competitive gaming.
Digital Photo Editing
Yes
Yes
Both the Acer X34V (QD-OLED) and Dell S2721QS (IPS) are suitable for digital photo editing.
HDR Video Editing and Color Grading
No
No
Both the Acer X34V (QD-OLED) and Dell S2721QS (IPS) are not suitable for HDR video editing and color grading.
Print Photo Editing
No
No
Both the Acer X34V (QD-OLED) and Dell S2721QS (IPS) are not suitable for print photo editing.
Give feedback
We’re constantly working to improve.
How the Acer X34V (QD-OLED) and the Dell S2721QS (IPS) compare to other monitors
Spec Comparison
 |  | |
| Acer X34V (QD-OLED) | Dell S2721QS (IPS) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$700 | $230 | ||
Screen Size | |||
Screen Size | 34" | 27" | |
Resolution | |||
Resolution | 3440 x 1440 | 3840 x 2160 | |
Screen Type | |||
Screen Type | OLED | LED | |
Screen Sub-type | |||
Screen Sub-type | QD-OLED | IPS | |
Refresh Rate | |||
Refresh Rate | 175Hz | 60Hz | |
COLOR, CONTRAST & BRIGHTNESS | |||
|---|---|---|---|
Native Contrast | |||
Native Contrast | Inf:1 | 1221:1 | |
SDR Peak Brightness | |||
SDR Peak Brightness | 250 nits | 373 nits | |
HDR Peak Brightness | |||
HDR Peak Brightness | 1000 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 | 104 % | 100 % | |
MOTION CHARACTERISTICS | |||
|---|---|---|---|
Total Response Time | |||
Total Response Time | 1 ms | 14.5 ms | |
Variable Refresh Rate | |||
Variable Refresh Rate | 48 - 175 Hz | 40 - 60 Hz | |
Strobing / BFI | |||
Strobing / BFI | No | No | |
Persistence Blur Score | |||
Persistence Blur Score | 7.2/10 | 5/10 | |
Ghosting Score | |||
Ghosting Score | 9.6/10 | 6/10 | |
TEXT & IMAGE CLARITY | |||
|---|---|---|---|
Pixels Per Inch | |||
Pixels Per Inch | 109 PPI | 164 PPI | |
Coating | |||
Coating | Matte | Matte | |
Text Clarity Score | |||
Text Clarity Score | 6.6/10 | 8.1/10 | |
Image Clarity Score | |||
Image Clarity Score | 7/10 | 8.1/10 | |
PORTS & CONNECTIVITY | |||
|---|---|---|---|
HDMI 1.4 Ports | |||
HDMI 1.4 Ports | 0 | 0 | |
HDMI 2.0 Ports | |||
HDMI 2.0 Ports | 1 | 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
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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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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