Notice: Your browser is not supported or outdated so some features of the site might not be available.
- Table of Contents
- Top
- Main Differences
- Design
- Picture Quality
- Motion
- Inputs
- Features
- Comments
Dell Alienware AW2521H vs Dell Alienware AW2721D
Side-by-Side Comparison
Products
Dell Alienware AW2521H
Dell Alienware AW2721D
Tested using Methodology v1.2
Updated Sep 12, 2024 07:11 PM
SEE PRICE
Amazon.comTested using Methodology v1.2
Updated May 24, 2024 06:22 PM
SEE PRICE
Amazon.com
Max Refresh Rate360 Hz
Size25"
Pixel TypeIPS
Variable Refresh RateYes
HDR10Yes
Native Resolution1920 x 1080
Max Refresh Rate240 Hz
Size27"
Pixel TypeIPS
Variable Refresh RateYes
HDR10Yes
Native Resolution2560 x 1440
Variants
- Alienware AW2521H (25")
- Alienware AW2721D (27")
Our Verdict
Dell Alienware AW2521H
Dell Alienware AW2721D
The Dell Alienware AW2721D and the Dell Alienware AW2521H are both great monitors that perform similarly in many ways, but they have different resolutions and sizes. The AW2521H is one of the rare monitors with a 360Hz max refresh rate, while the AW2721D has a max refresh rate of 240Hz, but the difference likely won't be noticeable to most gamers. That said, the AW2521H has a slightly better response time with less overshoot and better reflection handling. On the other hand, the AW2721D has a better color gamut and brightness for HDR, and it feels more well-built.
Check Price
25"
Alienware AW2521H
SEE PRICE
Amazon.com27"
Alienware AW2721D
SEE PRICE
Amazon.com25"
Alienware AW2521H
SEE PRICE
BestBuy.com27"
Alienware AW2721D
SEE PRICE
Amazon.com25"
Alienware AW2521H
SEE PRICE
Walmart.com25"
Alienware AW2521H
SEARCH
B&HMain Differences forMixed Usage
Mixed Usage
Threshold
Mixed Usage
7.6
7.9
Resolution And Size
6.7
8.0
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
8.5
Build Quality Picture
Ergonomics
9.0
9.0
Ergonomics Picture
Back Picture
Height Adjustment
5.1" (13.0 cm)
5.1" (13.0 cm)
Tilt Range
-20° to 5°
-21° to 5°
Rotate Portrait/Landscape
Yes, Both Ways
Yes, Both Ways
Swivel Range
-20° to 20°
-20° to 20°
Wall Mount
VESA 100x100
VESA 100x100
Stand
Stand Picture
Thickness Picture
Base Width
18.3" (46.5 cm)
18.3" (46.5 cm)
Base Depth
10.3" (26.1 cm)
10.0" (25.4 cm)
Thickness (With Display)
8.9" (22.6 cm)
9.1" (23.0 cm)
Weight (With Display)
17.0 lbs (7.7 kg)
24.5 lbs (11.1 kg)
Display
Display Picture
Size
25"
27"
Housing Width
21.9" (55.7 cm)
23.9" (60.8 cm)
Housing Height
13.0" (32.9 cm)
14.0" (35.5 cm)
Thickness (Without Stand)
3.3" (8.4 cm)
3.3" (8.3 cm)
Weight (Without Stand)
9.9 lbs (4.5 kg)
14.1 lbs (6.4 kg)
Borders Size (Bezels)
0.3" (0.7 cm)
0.2" (0.5 cm)
Controls
Controls Picture
In The Box
In The Box Picture
Power Supply
Internal
Internal
Picture Quality
Contrast
6.5
6.1
Checkerboard Picture
Native Contrast
1,336 : 1
1,088 : 1
Contrast With Local Dimming
N/A
1,026 : 1
Local Dimming
0.0
3.0
Local Dimming Video
Local Dimming
No
Yes
Backlight
Edge
Edge
SDR Brightness
8.3
8.6
Real Scene
440 cd/m²
545 cd/m²
Peak 2% Window
435 cd/m²
544 cd/m²
Peak 10% Window
436 cd/m²
586 cd/m²
Peak 25% Window
436 cd/m²
586 cd/m²
Peak 50% Window
437 cd/m²
480 cd/m²
Peak 100% Window
437 cd/m²
479 cd/m²
Sustained 2% Window
434 cd/m²
536 cd/m²
Sustained 10% Window
436 cd/m²
572 cd/m²
Sustained 25% Window
436 cd/m²
576 cd/m²
Sustained 50% Window
437 cd/m²
465 cd/m²
Sustained 100% Window
437 cd/m²
474 cd/m²
Automatic Brightness Limiting (ABL)
0.000
0.014
Minimum Brightness
36 cd/m²
38 cd/m²
HDR Brightness
7.1
7.6
EOTF
VESA DisplayHDR Certification
No Certification
DisplayHDR 600
Real Scene
457 cd/m²
562 cd/m²
Peak 2% Window
464 cd/m²
698 cd/m²
Peak 10% Window
466 cd/m²
788 cd/m²
Peak 25% Window
466 cd/m²
621 cd/m²
Peak 50% Window
467 cd/m²
481 cd/m²
Peak 100% Window
466 cd/m²
481 cd/m²
Sustained 2% Window
464 cd/m²
480 cd/m²
Sustained 10% Window
466 cd/m²
495 cd/m²
Sustained 25% Window
466 cd/m²
515 cd/m²
Sustained 50% Window
466 cd/m²
467 cd/m²
Sustained 100% Window
466 cd/m²
470 cd/m²
Automatic Brightness Limiting (ABL)
0.000
0.006
Horizontal Viewing Angle
8.0
7.8
Horizontal Viewing Angle Video
Horizontal Chroma Graph
Color Washout From Left
35°
39°
Color Washout From Right
37°
39°
Horizontal Hue Graph
Color Shift From Left
47°
54°
Color Shift From Right
50°
55°
Horizontal Lightness Graph
Brightness Loss From Left
38°
44°
Brightness Loss From Right
41°
44°
Black Level Raise From Left
70°
70°
Black Level Raise From Right
70°
70°
Gamma Shift From Left
58°
40°
Gamma Shift From Right
59°
41°
Vertical Viewing Angle
7.1
8.4
Vertical Viewing Angle Video
Vertical Chroma Graph
Color Washout From Below
28°
39°
Color Washout From Above
29°
38°
Vertical Hue Graph
Color Shift From Below
69°
52°
Color Shift From Above
67°
52°
Vertical Lightness Graph
Brightness Loss From Below
32°
42°
Brightness Loss From Above
33°
41°
Black Level Raise From Below
49°
70°
Black Level Raise From Above
70°
70°
Gamma Shift From Below
28°
68°
Gamma Shift From Above
30°
70°
Gray Uniformity
8.0
8.3
50% Uniformity Picture
50% Std. Dev.
3.463%
2.762%
50% DSE
0.136%
0.132%
Black Uniformity
5.4
4.3
Native Black Uniformity Picture
Native Std. Dev.
2.390%
2.769%
Black Uniformity Picture With Local Dimming
Std. Dev. w/ L.D.
N/A
5.472%
Color Accuracy (Pre-Calibration)
8.7
6.1
Pre Calibration Picture
Pre Gamma Curve Picture
Pre Color Picture
Picture Mode
Custom Color
Warm
sRGB Gamut Area xy
98.2%
136.9%
White Balance dE (Avg.)
2.90
2.66
Color Temperature (Avg.)
7,005 K
6,384 K
Gamma (Avg.)
2.21
2.16
Color dE (Avg.)
1.81
3.42
Contrast Setting
75
75
RGB Settings
100-100-100
100-100-100
Gamma Setting
No Gamma Setting
No Gamma Setting
Brightness Setting
75
50
Measured Brightness
205 cd/m²
206 cd/m²
Brightness Locked
No
No
Color Accuracy (Post-Calibration)
9.6
9.8
Post Calibration Picture
Post Gamma Curve Picture
Post Color Picture
Picture Mode
Custom Color
Custom Color
sRGB Gamut Area xy
97.6%
100.1%
White Balance dE (Avg.)
0.52
0.43
Color Temperature (Avg.)
6,516 K
6,520 K
Gamma (Avg.)
2.18
2.18
Color dE (Avg.)
0.54
0.23
Contrast Setting
75
75
RGB Settings
100-98-90
100-88-80
Gamma Setting
No Gamma Setting
No Gamma Setting
Brightness Setting
30
21
Measured Brightness
101 cd/m²
100 cd/m²
SDR Color Gamut
9.0
9.5
sRGB Color Gamut Picture
sRGB Coverage xy
98.8%
99.8%
sRGB Picture Mode
Custom Color
Custom Color
Adobe RGB Color Gamut Picture
Adobe RGB Coverage xy
73.0%
85.6%
Adobe RGB Picture Mode
Custom Color
Custom Color
SDR Color Volume
9.3
9.6
sRGB Color Volume ITP Picture
sRGB In ICtCp
96.8%
98.1%
sRGB Picture Mode
Custom Color
Custom Color
Adobe RGB Color Volume ITP Picture
Adobe RGB In ICtCp
78.0%
88.1%
Adobe RGB Picture Mode
Custom Color
Custom Color
HDR Color Gamut
6.7
9.2
Wide Color Gamut
No
Yes
DCI-P3 Color Gamut Picture
DCI-P3 Coverage xy
81.3%
97.7%
DCI-P3 Picture Mode
Custom Color
Gamer 1
Rec. 2020 Color Gamut Picture
Rec. 2020 Coverage xy
58.3%
71.9%
Rec. 2020 Picture Mode
Custom Color
Gamer 1
HDR Color Volume
7.6
8.7
DCI-P3 Color Volume ITP Picture
DCI-P3 In ICtCp
77.5%
88.9%
DCI-P3 Picture Mode
Custom Color
Gamer 1
Rec. 2020 Color Volume ITP Picture
Rec. 2020 In ICtCp
55.9%
70.5%
Rec. 2020 Picture Mode
Custom Color
Gamer 1
Reflections
7.5
6.3
Average Room
Average Room Off Picture
Bright Room Off Picture
Screen Finish
Matte
Semi-Gloss
Total Reflections
5.8%
7.8%
Indirect Reflections
4.0%
4.2%
Calculated Direct Reflections
1.8%
3.5%
Text Clarity
7.0
7.5
ClearType On
ClearType Off
Pixel Type
IPS
IPS
Pixels
Subpixel Layout
RGB
RGB
Gradient
9.6
9.6
Gradient Picture
Color Depth
10 Bit
10 Bit
Motion
Refresh Rate
9.3
9.0
Native Refresh Rate
360 Hz
240 Hz
Max Refresh Rate
360 Hz
240 Hz
Max Refresh Rate Over DP
360 Hz
240 Hz
Max Refresh Rate Over HDMI
240 Hz
144 Hz
Max Refresh Rate Over DP @ 10-bit
300 Hz
144 Hz
Max Refresh Rate Over HDMI @ 10-Bit
144 Hz
60 Hz
Variable Refresh Rate (VRR)
FreeSync
No
Compatible (Tested)
G-SYNC
Yes (Native)
Yes (Native)
VRR Maximum
360 Hz
240 Hz
VRR Minimum
< 20 Hz
< 20 Hz
VRR Supported Connectors
DisplayPort, HDMI
DisplayPort, HDMI
Variable Refresh Rate
Yes
Yes
Response Time @ Max Refresh Rate
9.2
8.8
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
Fast
Fast
Rise / Fall Time
3.1 ms
2.6 ms
Total Response Time
6.9 ms
7.1 ms
Overshoot Error
0.0%
8.9%
Worst 3 Rise / Fall Time
5.5 ms
3.3 ms
Worst 3 Total Response Time
10.2 ms
10.8 ms
Worst 3 Overshoot Error
0.0%
27.8%
Response Time @ 120Hz
8.9
7.8
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
Fast
Fast
Rise / Fall Time
3.8 ms
3.2 ms
Total Response Time
7.6 ms
12.0 ms
Overshoot Error
1.4%
12.9%
Worst 3 Rise / Fall Time
5.1 ms
4.1 ms
Worst 3 Total Response Time
11.5 ms
16.5 ms
Worst 3 Overshoot Error
5.5%
31.0%
Response Time @ 60Hz
8.0
7.4
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
Fast
Fast
Rise / Fall Time
4.3 ms
4.3 ms
Total Response Time
12.3 ms
16.1 ms
Overshoot Error
1.2%
5.4%
Worst 3 Rise / Fall Time
6.1 ms
6.1 ms
Worst 3 Total Response Time
22.1 ms
21.8 ms
Worst 3 Overshoot Error
5.1%
14.0%
Backlight Strobing (BFI)
Backlight Strobing Picture
Backlight Strobing Frequency Picture
Backlight Strobing (BFI)
Yes
No BFI
Maximum Frequency
240 Hz
N/A
Minimum Frequency
144 Hz
N/A
Longest Pulse Width Brightness
217 cd/m²
N/A
Shortest Pulse Width Brightness
22 cd/m²
N/A
Pulse Width Control
Yes
No BFI
Pulse Phase Control
No
No BFI
Pulse Amplitude Control
Yes
No BFI
VRR At The Same Time
No
No BFI
Image Flicker
10
10
Backlight Picture
Flicker-Free
Yes
Yes
PWM Dimming Frequency
0 Hz
0 Hz
Inputs
Input Lag
9.2
9.0
Native Resolution @ Max Hz
1.7 ms
3.0 ms
Native Resolution @ 120Hz
4.8 ms
4.8 ms
Native Resolution @ 60Hz
8.4 ms
12.4 ms
Backlight Strobing (BFI)
5.5 ms
N/A
Resolution And Size
6.7
8.0
Native Resolution
1920 x 1080
2560 x 1440
Aspect Ratio
16:9
16:9
Megapixels
2.1 MP
3.7 MP
Pixel Density
91 PPI
109 PPI
Measured Screen Diagonal
24.5"
27.0"
Screen Area
255 in²
310 in²
PS5 Compatibility
7.0
7.0
PS5 Compatibility Photo
4k @ 120Hz
No
No
4k @ 60Hz
No
No
1440p @ 120Hz
No
Yes
1440p @ 60Hz
No
Yes
1080p @ 120Hz
Yes
Yes
1080p @ 60Hz
Yes
Yes
HDR
Yes
Yes
VRR
Yes
Yes
Xbox Series X|S Compatibility
4.2
5.8
XSX Compatibility Photo
4k @ 120Hz
No
No
4k @ 60Hz
No
No
1440p @ 120Hz
No
Yes
1440p @ 60Hz
No
Yes
1080p @ 120Hz
Yes
Yes
1080p @ 60Hz
Yes
Yes
HDR
No
No
VRR
Yes
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
2
HDR10
Yes
Yes
3.5mm Audio In
No
No
3.5mm Microphone In
No
No
USB
USB-A Ports
4
4
USB-A Rated Speed
5Gbps (USB 3.2 Gen 1)
5Gbps (USB 3.2 Gen 1)
USB-B Upstream Port
Yes
Yes
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
Controllable
Multiple Input Display
No
No
KVM Switch
No
No
On-Screen Display (OSD)
OSD Picture
Check Price
25"
Alienware AW2521H
SEE PRICE
Amazon.com27"
Alienware AW2721D
SEE PRICE
Amazon.com25"
Alienware AW2521H
SEE PRICE
BestBuy.com27"
Alienware AW2721D
SEE PRICE
Amazon.com25"
Alienware AW2521H
SEE PRICE
Walmart.com25"
Alienware AW2521H
SEARCH
B&H
Dell Alienware AW2521H
Dell Alienware AW2721D
Comments
Dell Alienware AW2521H vs Dell Alienware AW2721D: Main Discussion
What do you think of these products? Let us know below.
Looking for a personalized buying advice from the RTINGS.com experts? Insiders have direct access to buying advice on our insider forum.