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What we think
The PerfectRec monitor team Learn more
Updated April 22, 2024·
If you prioritize high-end gaming with the best contrast and response times, the Acer Predator X45 will serve you well, especially if you're interested in immersive, large-screen experiences. It's also suited for color-critical work like photo editing. However, you'll pay a premium for these features. On the other hand, the Dell S2721QS offers a sharp image with good color accuracy at a more affordable price, making it a solid option for casual gaming, general productivity, and media consumption. It's not as well-suited to competitive gaming or color-critical tasks though. Consider how much you value gaming performance and color fidelity against cost. 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 Predator X45 (W-OLED)
- Best in class for casual gaming
- Good for media consumption
- Very good refresh rate
- Best in class contrast
- Best in class brightness
- 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
9.8
5.9
3440 x 1440
RESOLUTION
3840 x 2160
240Hz
REFRESH RATE
60Hz
Inf:1
NATIVE CONTRAST
1221:1
1000 nits
SDR PEAK BRIGHTNESS
373 nits
Unknown
HDR PEAK BRIGHTNESS
386 nits
98.5 %
DCI-P3 COLOR GAMUT
85.2 %
Matte
COATING
Matte
The Acer Predator X45 (W-OLED) is best in class for casual gaming, while the Dell S2721QS (IPS) is poor.
Competitive Gaming
6.4
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
1000 nits
SDR PEAK BRIGHTNESS
373 nits
The Acer Predator X45 (W-OLED) is only fair for competitive gaming, while the Dell S2721QS (IPS) is poor.
Productivity
4.0
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 Acer Predator X45 (W-OLED) is poor.
Cost
$1,200
$280
$0
$500
$1,000
$1,500
$2,000
The Acer Predator X45 (W-OLED) has a price of $1,200 and the Dell S2721QS (IPS) costs $280.
HDR Gaming and Media Consumption
Yes
No
The Acer Predator X45 (W-OLED) is suitable for HDR gaming and media consumption while the Dell S2721QS (IPS) is not suitable for HDR gaming and media consumption.
HDR Video Editing and Color Grading
Yes
No
The Acer Predator X45 (W-OLED) is suitable for HDR video editing and color grading while the Dell S2721QS (IPS) is not suitable for HDR video editing and color grading.
Print Photo Editing
Yes
No
The Acer Predator X45 (W-OLED) is suitable for print photo editing while the Dell S2721QS (IPS) is not suitable for print photo editing.
Key similarities
Media Consumption
7.1
6.7
3440 x 1440
RESOLUTION
3840 x 2160
Inf:1
NATIVE CONTRAST
1221:1
1000 nits
SDR PEAK BRIGHTNESS
373 nits
Unknown
HDR PEAK BRIGHTNESS
386 nits
Matte
COATING
Matte
Although they have very similar scores, PerfectRec considers Acer Predator X45 (W-OLED) to be good for media consumption, while the Dell S2721QS (IPS) is only fair.
Digital Photo Editing
Yes
Yes
Both the Acer Predator X45 (W-OLED) and Dell S2721QS (IPS) are suitable for digital photo editing.
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We’re constantly working to improve.
How the Acer Predator X45 (W-OLED) and the Dell S2721QS (IPS) compare to other monitors
Spec Comparison
 |  | |
| Acer Predator X45 (W-OLED) | Dell S2721QS (IPS) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$1,200 | $280 | ||
Screen Size | |||
Screen Size | 45" | 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 | 1000 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 | Unknown | 100 % | |
MOTION CHARACTERISTICS | |||
|---|---|---|---|
Total Response Time | |||
Total Response Time | 0.01 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 | 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
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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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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