A comparison of specs, key information, reviews, and best pricing from top retailers
Last updated -- hours ago | Report incorrect information
Company ProductName Specs
Company ProductName Specs
What we think
The PerfectRec monitor team Learn more
Updated April 22, 2024·
If you're a competitive gamer or someone who values high-quality HDR content, the Acer Predator X45 with its OLED panel will deliver superior contrast and responsiveness, but it will cost significantly more. For casual gaming, everyday productivity, and media consumption, the Dell S2721DS with its IPS panel offers good image clarity and satisfactory performance at a much more affordable price, though it won't match the deep blacks and fast response of the Acer. The larger screen and curvature of the Acer provide an immersive experience but consider the Dell if budget is a concern and your needs are more general and less focused on high-end gaming or professional image quality. 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 S2721DS (IPS)
- Good text clarity
- Good image clarity
Key differences
Casual Gaming
9.8
5.8
3440 x 1440
RESOLUTION
2560 x 1440
240Hz
REFRESH RATE
75Hz
Inf:1
NATIVE CONTRAST
1015:1
1000 nits
SDR PEAK BRIGHTNESS
334 nits
Unknown
HDR PEAK BRIGHTNESS
N/A
98.5 %
DCI-P3 COLOR GAMUT
N/A
Matte
COATING
Matte
The Acer Predator X45 (W-OLED) is best in class for casual gaming, while the Dell S2721DS (IPS) is poor.
Competitive Gaming
6.4
5.0
240Hz
REFRESH RATE
75Hz
0.0 ms
TOTAL RESPONSE TIME
17.4 ms
48 - 240 Hz
VARIABLE REFRESH RATE
48 - 75 Hz
No
STROBING / BFI
No
1000 nits
SDR PEAK BRIGHTNESS
334 nits
The Acer Predator X45 (W-OLED) is only fair for competitive gaming, while the Dell S2721DS (IPS) is poor.
Productivity
4.0
5.9
3440 x 1440
RESOLUTION
2560 x 1440
83 PPI
PIXELS PER INCH
109 PPI
Yes
ADJUSTABLE STAND
No
Matte
COATING
Matte
The Dell S2721DS (IPS) and Acer Predator X45 (W-OLED) are both poor for productivity, though the Dell S2721DS (IPS) is somewhat better.
Media Consumption
7.1
5.9
3440 x 1440
RESOLUTION
2560 x 1440
Inf:1
NATIVE CONTRAST
1015:1
1000 nits
SDR PEAK BRIGHTNESS
334 nits
Unknown
HDR PEAK BRIGHTNESS
N/A
Matte
COATING
Matte
The Acer Predator X45 (W-OLED) is good for media consumption, while the Dell S2721DS (IPS) is poor.
Cost
$1,200
$309
$0
$500
$1,000
$1,500
$2,000
The Acer Predator X45 (W-OLED) has a price of $1,200 and the Dell S2721DS (IPS) costs $309.
HDR Gaming and Media Consumption
Yes
No
The Acer Predator X45 (W-OLED) is suitable for HDR gaming and media consumption while the Dell S2721DS (IPS) is not suitable for HDR gaming and media consumption.
Digital Photo Editing
Yes
No
The Acer Predator X45 (W-OLED) is suitable for digital photo editing while the Dell S2721DS (IPS) is not suitable for digital photo editing.
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 S2721DS (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 S2721DS (IPS) is not suitable for print photo editing.
Give feedback
We’re constantly working to improve.
How the Acer Predator X45 (W-OLED) and the Dell S2721DS (IPS) compare to other monitors
Spec Comparison
 |  | |
| Acer Predator X45 (W-OLED) | Dell S2721DS (IPS) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$1,200 | $309 | ||
Screen Size | |||
Screen Size | 45" | 27" | |
Resolution | |||
Resolution | 3440 x 1440 | 2560 x 1440 | |
Screen Type | |||
Screen Type | OLED | LED | |
Screen Sub-type | |||
Screen Sub-type | W-OLED | IPS | |
Refresh Rate | |||
Refresh Rate | 240Hz | 75Hz | |
COLOR, CONTRAST & BRIGHTNESS | |||
|---|---|---|---|
Native Contrast | |||
Native Contrast | Inf:1 | 1015:1 | |
SDR Peak Brightness | |||
SDR Peak Brightness | 1000 nits | 334 nits | |
HDR Peak Brightness | |||
HDR Peak Brightness | Unknown | N/A | |
Suitable for HDR Gaming and Media Consumption | |||
Suitable for HDR Gaming and Media Consumption | Yes | No | |
sRGB Color Gamut | |||
sRGB Color Gamut | Unknown | 98.6 % | |
MOTION CHARACTERISTICS | |||
|---|---|---|---|
Total Response Time | |||
Total Response Time | 0.01 ms | 17.4 ms | |
Variable Refresh Rate | |||
Variable Refresh Rate | 48 - 240 Hz | 48 - 75 Hz | |
Strobing / BFI | |||
Strobing / BFI | No | No | |
Persistence Blur Score | |||
Persistence Blur Score | 8/10 | 5.2/10 | |
Ghosting Score | |||
Ghosting Score | 10/10 | 6/10 | |
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 | 1 | |
HDMI 2.0 Ports | |||
HDMI 2.0 Ports | 2 | 0 | |
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 S2721DS (IPS)
See more
Dig into reviews and images
Tech Radar
Ural Garrett | November 2021
"General users or casual PC gamers in need of a solid and affordable QHD monitor with a few extras may walk away satisfied with the Dell S2721D."
Give feedback
We're constantly perfecting our model
More comparisons for you
Compare Acer Predator X45 (W-OLED) vs. Dell Alienware AW3225QF (QD-OLED)
VS
Compare Acer Predator X45 (W-OLED) vs. Samsung Odyssey OLED G9 G95SC (QD-OLED)
VS
Compare Acer Predator X45 (W-OLED) vs. Gigabyte FO32U2P (QD-OLED)
VS
Compare Dell S2721DS (IPS) vs. Dell S2522HG (IPS)
VS
Compare Dell S2721DS (IPS) vs. Dell S2721DGF (IPS)
VS
Compare Dell S2721DS (IPS) vs. Dell S2722QC (IPS)
VS
FAQs
Why trust us
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
210
Monitors evaluated
10,500
Monitors stats compiled
15
Proprietary Monitors ratings developed
125,300
Recommendations made
18,795
Consumer hours saved
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.
Featured in
