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 23, 2024·
If you prioritize immersive gaming and media experiences and are willing to invest in a premium display, the Acer Predator X45's OLED panel offers superior contrast and HDR capabilities. It's excellent for HDR video editing, with a wider color gamut suiting digital photo editing and print photo editing. However, its text quality is poor, making it less ideal for productivity tasks. Alternatively, the Dell S2721DGF offers good performance for both casual and competitive gaming at a considerably lower price. Its stronger text clarity and good image clarity make it better suited for productivity and everyday use, though it falls short in HDR gaming and media consumption. 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 S2721DGF (IPS)
- Good text clarity
- Good image clarity
Key differences
Casual Gaming
9.8
5.9
3440 x 1440
RESOLUTION
2560 x 1440
240Hz
REFRESH RATE
165Hz
Inf:1
NATIVE CONTRAST
882:1
1000 nits
SDR PEAK BRIGHTNESS
368 nits
Unknown
HDR PEAK BRIGHTNESS
485 nits
98.5 %
DCI-P3 COLOR GAMUT
97.2 %
Matte
COATING
Matte
The Acer Predator X45 (W-OLED) is best in class for casual gaming, while the Dell S2721DGF (IPS) is poor.
Competitive Gaming
6.4
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
1000 nits
SDR PEAK BRIGHTNESS
368 nits
The Acer Predator X45 (W-OLED) is only fair for competitive gaming, while the Dell S2721DGF (IPS) is poor.
Productivity
4.0
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 Acer Predator X45 (W-OLED) is poor.
Media Consumption
7.1
5.9
3440 x 1440
RESOLUTION
2560 x 1440
Inf:1
NATIVE CONTRAST
882:1
1000 nits
SDR PEAK BRIGHTNESS
368 nits
Unknown
HDR PEAK BRIGHTNESS
485 nits
Matte
COATING
Matte
The Acer Predator X45 (W-OLED) is good for media consumption, while the Dell S2721DGF (IPS) is poor.
Cost
$1,200
$300
$0
$500
$1,000
$1,500
$2,000
The Acer Predator X45 (W-OLED) has a price of $1,200 and the Dell S2721DGF (IPS) costs $300.
HDR Gaming and Media Consumption
Yes
No
The Acer Predator X45 (W-OLED) is suitable for HDR gaming and media consumption while the Dell S2721DGF (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 S2721DGF (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 S2721DGF (IPS) is not suitable for print photo editing.
Key similarities
Digital Photo Editing
Yes
Yes
Both the Acer Predator X45 (W-OLED) and Dell S2721DGF (IPS) are suitable for digital photo editing.
Give feedback
We’re constantly working to improve.
How the Acer Predator X45 (W-OLED) and the Dell S2721DGF (IPS) compare to other monitors
Spec Comparison
 |  | |
| Acer Predator X45 (W-OLED) | Dell S2721DGF (IPS) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$1,200 | $300 | ||
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 | |
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 | 1000 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 | Unknown | 137.7 % | |
MOTION CHARACTERISTICS | |||
|---|---|---|---|
Total Response Time | |||
Total Response Time | 0.01 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 | 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 | 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
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 S2721DGF (IPS) vs. Dell S2522HG (IPS)
VS
Compare Dell S2721DGF (IPS) vs. Dell S2721DS (IPS)
VS
Compare Dell S2721DGF (IPS) vs. Dell S2721QS (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
