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- Table of Contents
- Top
- Main Differences
- Design
- Picture Quality
- Motion
- Inputs
- Features
- Comments
Dell Alienware AW2521H vs BenQ ZOWIE XL2566K
Side-by-Side Comparison
Products
Dell Alienware AW2521H
BenQ ZOWIE XL2566K
Tested using Methodology v1.2
Updated Sep 12, 2024 07:11 PM
SEE PRICE
Amazon.comTested using Methodology v2.0
Updated Aug 12, 2024 03:25 PM
SEE PRICE
Amazon.com
Max Refresh Rate360 Hz
Size25"
Pixel TypeIPS
Native Resolution1920 x 1080
Variable Refresh RateYes
HDR10Yes
Max Refresh Rate360 Hz
Size25"
Pixel TypeTN
Native Resolution1920 x 1080
Variable Refresh RateYes
HDR10No
Variants
- Alienware AW2521H (25")
- ZOWIE XL2566K (25")
Our Verdict
Dell Alienware AW2521H
BenQ ZOWIE XL2566K
The Dell Alienware AW2521H is better than the BenQ ZOWIE XL2566K. The Dell has a much better viewing angle, delivering a more consistent visual experience when viewed at an angle. The Dell also supports HDR and gets brighter in SDR to overcome more glare in a bright room. The Dell also natively supports G-SYNC variable refresh rate technology, delivering a tear-free gaming experience with NVIDIA graphics cards.
Check Price
25"
Alienware AW2521H
SEE PRICE
Amazon.com25"
ZOWIE XL2566K
SEE PRICE
Amazon.com25"
Alienware AW2521H
SEE PRICE
BestBuy.com25"
ZOWIE XL2566K
SEE PRICE
BestBuy.com25"
Alienware AW2521H
SEE PRICE
Walmart.com25"
ZOWIE XL2566K
SEE PRICE
Walmart.comNotice: Two or more of the products selected have been tested with different test methodologies, so some of the results below aren't directly comparable. Learn how our test benches and scoring system work, and read more about the latest changes to our monitors test methodology.
Main Differences for
Threshold
Mixed Usage
7.6
Full Comparison
Design
Style
Design Picture
Curved
No
No
Curve Radius
Not Curved
Not Curved
Accelerated Longevity Test
Uniformity Pictures
Longevity Graph
Build Quality
8.5
6.5
Build Quality Picture
Ergonomics
9.0
9.1
Ergonomics Picture
Back Picture
Height Adjustment
5.1" (13.0 cm)
5.9" (14.9 cm)
Min Height To Top Of Panel
13.9" (35.4 cm)
Tilt Range
-20° to 5°
-20° to 5°
Rotate Portrait/Landscape
Yes, Both Ways
Yes, Clockwise
Swivel Range
-20° to 20°
-45° to 45°
Wall Mount
VESA 100x100
VESA 100x100
Stand
Stand Picture
Thickness Picture
Base Width
18.3" (46.5 cm)
10.2" (26.0 cm)
Base Depth
10.3" (26.1 cm)
6.9" (17.5 cm)
Thickness (With Display)
8.9" (22.6 cm)
5.9" (15.0 cm)
Weight (With Display)
17.0 lbs (7.7 kg)
14.2 lbs (6.5 kg)
Display
Display Picture
Size
25"
25"
Housing Width
21.9" (55.7 cm)
22.4" (57.0 cm)
Housing Height
13.0" (32.9 cm)
13.2" (33.5 cm)
Thickness (Without Stand)
3.3" (8.4 cm)
2.6" (6.5 cm)
Weight (Without Stand)
9.9 lbs (4.5 kg)
10.4 lbs (4.7 kg)
Borders Size (Bezels)
0.3" (0.7 cm)
0.6" (1.5 cm)
Controls
Controls Picture
In The Box
In The Box Picture
Power Supply
Internal
Internal
Picture Quality
Contrast
6.5
6.2
Checkerboard Picture
Native Contrast
1,336 : 1
1,131 : 1
Contrast With Local Dimming
N/A
N/A
Local Dimming
0.0
0.0
Local Dimming Video
Local Dimming
No
No
Backlight
Edge
Edge
SDR Brightness
8.3
7.7
Real Scene
440 cd/m²
315 cd/m²
Peak 2% Window
435 cd/m²
304 cd/m²
Peak 10% Window
436 cd/m²
306 cd/m²
Peak 25% Window
436 cd/m²
306 cd/m²
Peak 50% Window
437 cd/m²
306 cd/m²
Peak 100% Window
437 cd/m²
306 cd/m²
Sustained 2% Window
434 cd/m²
302 cd/m²
Sustained 10% Window
436 cd/m²
303 cd/m²
Sustained 25% Window
436 cd/m²
304 cd/m²
Sustained 50% Window
437 cd/m²
304 cd/m²
Sustained 100% Window
437 cd/m²
303 cd/m²
Automatic Brightness Limiting (ABL)
0.000
0.000
Minimum Brightness
36 cd/m²
55 cd/m²
HDR Brightness
7.1
0.0
EOTF
VESA DisplayHDR Certification
No Certification
No Certification
Real Scene
457 cd/m²
N/A
Peak 2% Window
464 cd/m²
N/A
Peak 10% Window
466 cd/m²
N/A
Peak 25% Window
466 cd/m²
N/A
Peak 50% Window
467 cd/m²
N/A
Peak 100% Window
466 cd/m²
N/A
Sustained 2% Window
464 cd/m²
N/A
Sustained 10% Window
466 cd/m²
N/A
Sustained 25% Window
466 cd/m²
N/A
Sustained 50% Window
466 cd/m²
N/A
Sustained 100% Window
466 cd/m²
N/A
Automatic Brightness Limiting (ABL)
0.000
N/A
Horizontal Viewing Angle
8.0
6.4
Horizontal Viewing Angle Video
Horizontal Chroma Graph
Color Washout From Left
35°
31°
Color Washout From Right
37°
34°
Horizontal Hue Graph
Color Shift From Left
47°
31°
Color Shift From Right
50°
33°
Horizontal Lightness Graph
Brightness Loss From Left
38°
48°
Brightness Loss From Right
41°
49°
Black Level Raise From Left
70°
24°
Black Level Raise From Right
70°
28°
Gamma Shift From Left
58°
29°
Gamma Shift From Right
59°
23°
Vertical Viewing Angle
7.1
5.1
Vertical Viewing Angle Video
Vertical Chroma Graph
Color Washout From Below
28°
15°
Color Washout From Above
29°
56°
Vertical Hue Graph
Color Shift From Below
69°
18°
Color Shift From Above
67°
70°
Vertical Lightness Graph
Brightness Loss From Below
32°
35°
Brightness Loss From Above
33°
39°
Black Level Raise From Below
49°
18°
Black Level Raise From Above
70°
18°
Gamma Shift From Below
28°
3°
Gamma Shift From Above
30°
3°
Gray Uniformity
8.0
6.9
50% Uniformity Picture
50% Std. Dev.
3.463%
6.226%
50% DSE
0.136%
0.160%
Black Uniformity
5.4
6.5
Native Black Uniformity Picture
Native Std. Dev.
2.390%
1.669%
Black Uniformity Picture With Local Dimming
Std. Dev. w/ L.D.
N/A
N/A
Color Accuracy (Pre-Calibration)
8.7
8.8
Pre Calibration Picture
Pre Gamma Curve Picture
Pre Color Picture
Picture Mode
Custom Color
Standard
sRGB Gamut Area xy
98.2%
95.7%
White Balance dE (Avg.)
2.90
1.56
Color Temperature (Avg.)
7,005 K
6,708 K
Gamma (Avg.)
2.21
2.17
Color dE (Avg.)
1.81
1.85
Contrast Setting
75
50
RGB Settings
100-100-100
100-100-100
Gamma Setting
No Gamma Setting
Gamma 3
Brightness Setting
75
100
Measured Brightness
205 cd/m²
301 cd/m²
Brightness Locked
No
No
Color Accuracy (Post-Calibration)
9.6
9.3
Post Calibration Picture
Post Gamma Curve Picture
Post Color Picture
Picture Mode
Custom Color
Standard
sRGB Gamut Area xy
97.6%
96.0%
White Balance dE (Avg.)
0.52
0.48
Color Temperature (Avg.)
6,516 K
6,479 K
Gamma (Avg.)
2.18
2.17
Color dE (Avg.)
0.54
1.16
Contrast Setting
75
50
RGB Settings
100-98-90
97-96-100
Gamma Setting
No Gamma Setting
Gamma 3
Brightness Setting
30
15
Measured Brightness
101 cd/m²
101 cd/m²
SDR Color Gamut
9.0
8.8
sRGB Color Gamut Picture
sRGB Coverage xy
98.8%
96.5%
sRGB Picture Mode
Custom Color
Standard
Adobe RGB Color Gamut Picture
Adobe RGB Coverage xy
73.0%
75.2%
Adobe RGB Picture Mode
Custom Color
Standard
HDR Color Gamut
6.7
0.0
Wide Color Gamut
No
N/A
DCI-P3 Color Gamut Picture
DCI-P3 Coverage xy
81.3%
N/A
DCI-P3 Picture Mode
Custom Color
No HDR
Rec. 2020 Color Gamut Picture
Rec. 2020 Coverage xy
58.3%
N/A
Rec. 2020 Picture Mode
Custom Color
No HDR
HDR Color Volume
7.6
0.0
DCI-P3 Color Volume ITP Picture
1,000 cd/m² DCI-P3 Coverage ICtCp
77.5%
N/A
DCI-P3 Picture Mode
Custom Color
No HDR
Rec. 2020 Color Volume ITP Picture
10,000 cd/m² Rec. 2020 Coverage ICtCp
55.9%
N/A
Rec. 2020 Picture Mode
Custom Color
No HDR
Text Clarity
7.0
7.0
ClearType On
ClearType Off
Pixel Type
IPS
TN
Pixels
Subpixel Layout
RGB
RGB
Reflections
7.5
7.7
Average Room
Average Room Off Picture
Bright Room Off Picture
Screen Finish
Matte
Matte
Total Reflections
5.8%
5.5%
Indirect Reflections
4.0%
4.2%
Calculated Direct Reflections
1.8%
1.3%
Gradient
9.6
8.4
Gradient Picture
Color Depth
10 Bit
8 Bit
SDR Color Volume
9.3
sRGB Color Volume ITP Picture
sRGB In ICtCp
96.8%
sRGB Picture Mode
Custom Color
Adobe RGB Color Volume ITP Picture
Adobe RGB In ICtCp
78.0%
Adobe RGB Picture Mode
Custom Color
Motion
Refresh Rate
9.3
8.4
Native Refresh Rate
360 Hz
360 Hz
Max Refresh Rate
360 Hz
360 Hz
Max Refresh Rate Over DP
360 Hz
360 Hz
Max Refresh Rate Over HDMI
240 Hz
240 Hz
Max Refresh Rate Over DP @ 10-bit
300 Hz
N/A
Max Refresh Rate Over HDMI @ 10-Bit
144 Hz
N/A
Variable Refresh Rate (VRR)
Variable Refresh Rate
Yes
Yes
FreeSync
No
Compatible (Tested)
G-SYNC
Yes (Native)
Compatible (Tested)
VRR Maximum
360 Hz
360 Hz
VRR Minimum
< 20 Hz
< 20 Hz
VRR Supported Connectors
DisplayPort, HDMI
DisplayPort, HDMI
VRR Motion Performance
8.4
Pursuit Photo VRR
OD Mode CAD Comparison
Recommended VRR OD Setting
Custom8
Variable Overdrive Advertised
No
Avg. CAD
132
Best CAD
129
Worst CAD
138
Refresh Rate Compliance
8.4
Fast GTG Sequence
VRR Compliance
Compliance @ Max Hz
44%
Compliance @ 120 FPS
73%
Compliance @ 60 FPS
85%
Response Time @ 60Hz
8.0
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
Fast
Premium
Rise / Fall Time
4.3 ms
5.8 ms
Total Response Time
12.3 ms
9.5 ms
Overshoot Error
1.2%
2 RGB
Worst 3 Rise / Fall Time
6.1 ms
18.5 ms
Worst 3 Total Response Time
22.1 ms
20.0 ms
Worst 3 Overshoot Error
5.1%
11 RGB
CAD @ Max Refresh Rate
8.6
Pursuit Photo At Max Refresh
CAD Heatmap At Max Refresh
OD Transition Max Refresh Rate
OD custom
0 to 31
Recommended Overdrive Setting
Premium
Avg. CAD
100
Best 10% CAD
34
Worst 10% CAD
183
Response Time @ Max Refresh Rate
First Response Time
3.1 ms
2.7 ms
Total Response Time
6.9 ms
4.8 ms
Recommended Overdrive Setting
Fast
Premium
Motion Blur Picture
RGB Overshoot
0.0%
8 RGB
Worst 10% RGB Overshoot
0.0%
35 RGB
Worst 10% First Response Time
5.5 ms
8.3 ms
Worst 10% Total Response Time
10.2 ms
9.0 ms
Heatmap First Response
Heatmap Total Response
Heatmap RGB Overshoot
Response Time Table
CAD @ 120Hz
8.1
Pursuit Photo 120Hz
CAD Heatmap 120Hz
OD Transition 120Hz
OD custom
0 to 31
Recommended Overdrive Setting
Premium
Avg. CAD
122
Best 10% CAD
29
Worst 10% CAD
262
Response Time @ 120Hz
Worst 10% First Response Time
5.1 ms
11.2 ms
RGB Overshoot
1.4%
1 RGB
Total Response Time
7.6 ms
6.0 ms
First Response Time
3.8 ms
4.7 ms
Recommended Overdrive Setting
Fast
Premium
Worst 10% Total Response Time
11.5 ms
12.3 ms
Worst 10% RGB Overshoot
5.5%
11 RGB
120Hz First Response Heatmap
120Hz Total Response Heatmap
120Hz Heatmap RGB Overshoot
Motion Blur Picture
Response Time Table
CAD @ 60Hz
8.0
Pursuit Photo 60Hz
CAD Heatmap 60Hz
OD Transition 60Hz
OD custom
0 to 31
Recommended Overdrive Setting
Premium
Avg. CAD
134
Best 10% CAD
30
Worst 10% CAD
280
Response Time @ 60Hz
Recommended Overdrive Setting
Fast
Premium
First Response Time
4.3 ms
5.8 ms
Total Response Time
12.3 ms
9.5 ms
RGB Overshoot
1.2%
2 RGB
Worst 10% Total Response Time
22.1 ms
20.0 ms
Worst 10% First Response Time
6.1 ms
18.5 ms
Worst 10% RGB Overshoot
5.1%
11 RGB
60Hz First Response Heatmap
60Hz Total Response Heatmap
60Hz RGB Overshoot Heatmap
Backlight Strobing (BFI)
Backlight Strobing Picture
Backlight Strobing Frequency Picture
Backlight Strobing (BFI)
Yes
Yes
Maximum Frequency
240 Hz
360 Hz
Minimum Frequency
144 Hz
120 Hz
Longest Pulse Width Brightness
217 cd/m²
282 cd/m²
Shortest Pulse Width Brightness
22 cd/m²
286 cd/m²
Pulse Width Control
Yes
Limited
Pulse Phase Control
No
No
Pulse Amplitude Control
Yes
No
VRR At The Same Time
No
No
VRR Flicker
8.5
VRR Flicker Video
VRR Flicker Graph
Dark Gray Flicker
0.9 RGB
Middle Gray Flicker
1.7 RGB
Light Gray Flicker
1.2 RGB
Image Flicker
10
10
Backlight Picture
Flicker-Free
Yes
Yes
PWM Dimming Frequency
0 Hz
0 Hz
Inputs
Input Lag
9.2
9.1
Native Resolution @ Max Hz
1.7 ms
2.1 ms
Native Resolution @ 120Hz
4.8 ms
5.2 ms
Native Resolution @ 60Hz
8.4 ms
13.6 ms
Backlight Strobing (BFI)
5.5 ms
3.9 ms
Resolution
6.7
5.4
Native Resolution
1920 x 1080
1920 x 1080
Aspect Ratio
16:9
16:9
Megapixels
2.1 MP
2.1 MP
Pixel Density
91 PPI
88 PPI
Measured Screen Diagonal
24.5"
Screen Area
255 in²
PS5 Compatibility
7.0
1.3
PS5 Compatibility Photo
PS5 Compatibility Table
4k @ 120Hz
No
No
4k @ 60Hz
No
No
1440p @ 120Hz
No
No
1440p @ 60Hz
No
No
1080p @ 120Hz
Yes
Yes
1080p @ 60Hz
Yes
Yes
HDR
Yes
VRR
Yes
Xbox Series X|S Compatibility
4.2
3.2
XSX Compatibility Photo
XSX Compatibility Table
4k @ 120Hz
No
No
4k @ 60Hz
No
No
1440p @ 120Hz
No
No
1440p @ 60Hz
No
Yes
1080p @ 120Hz
Yes
Yes
1080p @ 60Hz
Yes
Yes
HDR
No
VRR
Yes
Inputs Photos
Inputs 1
Inputs 2
Video And Audio Ports
DisplayPort
1 (DP 1.4)
1 (DP 1.4)
Mini DisplayPort
No
No
HDMI
2 (HDMI 2.0)
2 (HDMI 2.0)
HDMI 2.1 Rated Speed
No HDMI 2.1
No HDMI 2.1
DVI
No
No
VGA
No
No
Daisy Chaining
No
No
3.5mm Audio Out
2
1
HDR10
Yes
No
3.5mm Audio In
No
No
3.5mm Microphone In
No
No
USB
USB-A Ports
4
0
USB-A Rated Speed
5Gbps (USB 3.2 Gen 1)
No USB-A Ports
USB-B Upstream Port
Yes
No
USB-C Ports
0
0
USB-C Upstream
No USB-C Ports
No USB-C Ports
USB-C Rated Speed
No USB-C Ports
No USB-C Ports
USB-C Power Delivery
No USB-C Ports
No USB-C Ports
USB-C DisplayPort Alt Mode
No USB-C Ports
No USB-C Ports
Thunderbolt
No
No
macOS Compatibility
macOS Screenshot
Features
Additional Features
Speakers
No
No
RGB Illumination
Controllable
No
Multiple Input Display
No
No
KVM Switch
No
No
On-Screen Display (OSD)
OSD Picture
Check Price
25"
Alienware AW2521H
SEE PRICE
Amazon.com25"
ZOWIE XL2566K
SEE PRICE
Amazon.com25"
Alienware AW2521H
SEE PRICE
BestBuy.com25"
ZOWIE XL2566K
SEE PRICE
BestBuy.com25"
Alienware AW2521H
SEE PRICE
Walmart.com25"
ZOWIE XL2566K
SEE PRICE
Walmart.com
Dell Alienware AW2521H
BenQ ZOWIE XL2566K
Comments
Dell Alienware AW2521H vs BenQ ZOWIE XL2566K: Main Discussion
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