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  1. Table of Contents
  2. Top
  3. Main Differences
  4. Design
    1. Style
    2. Accelerated Longevity Test
    3. Build Quality
    4. Ergonomics
    5. Stand
    6. Display
    7. Controls
    8. In The Box
    9. Back
    10. Borders
    11. Thickness
  5. Picture Quality
    1. Contrast
    2. Local Dimming
    3. SDR Brightness
    4. HDR Brightness
    5. Horizontal Viewing Angle
    6. Vertical Viewing Angle
    7. Gray Uniformity
    8. Black Uniformity
    9. Color Accuracy (Pre-Calibration)
    10. Color Accuracy (Post-Calibration)
    11. SDR Color Gamut
    12. SDR Color Volume
    13. HDR Color Gamut
    14. HDR Color Volume
    15. Image Retention
    16. Reflections
    17. Text Clarity
    18. Gradient
    19. Color Bleed
  6. Motion
    1. Refresh Rate
    2. Variable Refresh Rate (VRR)
    3. Response Time @ Max Refresh Rate
    4. Response Time @ 120Hz
    5. Response Time @ 60Hz
    6. Backlight Strobing (BFI)
    7. Image Flicker
  7. Inputs
    1. Input Lag
    2. Resolution And Size
    3. PS5 Compatibility
    4. Xbox Series X|S Compatibility
    5. Inputs Photos
    6. Video And Audio Ports
    7. USB
    8. macOS Compatibility
  8. Features
    1. Additional Features
    2. On-Screen Display (OSD)
    3. Controls
    4. In The Box
  9. Comments

Dell Alienware AW2720HF vs Dell Alienware AW2521HF

Side-by-Side Comparison

Products

Dell Alienware AW2720HF
Dell Alienware AW2521HF

Tested using Methodology v1.1

Updated Dec 15, 2022 07:30 PM

SEE PRICE
Amazon.com

Tested using Methodology v1.2

Updated Feb 07, 2024 02:19 PM

SEE PRICE
Amazon.com
Dell Alienware AW2720HF Picture
Dell Alienware AW2521HF Picture

Variants

  • Alienware AW2720HF (27")
  • Alienware AW2521HF (25")

Our Verdict

Dell Alienware AW2720HF

Dell Alienware AW2521HF

When comparing the Dell Alienware AW2521HF with its bigger sibling, the Dell Alienware AW2720HF, these two monitors are nearly identical except for screen size and a different color on the back of the monitor. In terms of performance, the AW2521HF is a bit better, as it has a slightly higher contrast ratio, it gets brighter, and it has much better black uniformity, although the latter may be due to panel variance. Out of the box color accuracy, viewing angles, and response time at 60Hz are also better on the AW2521HF; however, the AW2720HF exhibits less color bleed, and its bigger screen is better for productivity tasks.

0

Check Price

27"
Alienware AW2720HF
SEE PRICE
Amazon.com
25"
Alienware AW2521HF
SEE PRICE
Amazon.com
27"
Alienware AW2720HF
SEE PRICE
BestBuy.com
25"
Alienware AW2521HF
SEE PRICE
Walmart.com
27"
Alienware AW2720HF
B&H
25"
Alienware AW2521HF
B&H
27"
Alienware AW2720HF
Walmart.com
25"
Alienware AW2521HF
BestBuy.com

Notice: 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 

0.10

Mixed Usage 

7.5
7.1

Black Uniformity 
 

2.4
5.7

Full Comparison

Design

Style 
 

Design Picture  

Dell Alienware AW2720HF Design Picture
Dell Alienware AW2521HF Design Picture

Curved 
 

No
No

Curve Radius 
 

Not Curved
Not Curved

Size  

27"
25"

Weight (without stand) 
 

10.1 lbs (4.6 kg)
7.9 lbs (3.6 kg)

Weight (with stand) 
 

18.2 lbs (8.2 kg)
15.0 lbs (6.8 kg)

Show text

Accelerated Longevity Test 
 

Uniformity Pictures  

Longevity Graph  

Build Quality 
 

8.5
8.5

Build Quality Picture  

Dell Alienware AW2720HF Build Quality Picture
Dell Alienware AW2521HF Build Quality Picture

Show text

Ergonomics 
 

8.3
8.9

Ergonomics Picture  

Dell Alienware AW2720HF Ergonomics Picture
Dell Alienware AW2521HF Ergonomics Picture

Back Picture  

Dell Alienware AW2720HF Back Picture
Dell Alienware AW2521HF Back Picture

Height Adjustment 
 

4.9" (12.5 cm)
4.9" (12.5 cm)

Tilt Range 
 

-20° to 5°
-20° to 5°

Rotate Portrait/Landscape 
 

Yes, Both Ways
Yes, Both Ways

Swivel Range 
 

-30° to 30°
-20° to 20°

Wall Mount 
 

VESA 100x100
VESA 100x100

Show text

Stand 
 

Stand Picture  

Dell Alienware AW2720HF Stand Picture
Dell Alienware AW2521HF Stand Picture

Thickness Picture  

Dell Alienware AW2720HF Thickness Picture
Dell Alienware AW2521HF Thickness Picture

Base Width 
 

18.3" (46.4 cm)
18.2" (46.3 cm)

Base Depth 
 

10.0" (25.3 cm)
10.1" (25.7 cm)

Thickness (With Display) 
 

8.9" (22.5 cm)
8.9" (22.5 cm)

Weight (With Display) 
 

18.2 lbs (8.2 kg)
15.0 lbs (6.8 kg)

Show text

Display 
 

Display Picture  

Dell Alienware AW2521HF Display Picture

Size 
 

27"
25"

Housing Width 
 

21.9" (55.7 cm)

Housing Height 
 

13.0" (32.9 cm)

Thickness (Without Stand) 
 

3.0" (7.6 cm)
3.0" (7.7 cm)

Weight (Without Stand) 
 

10.1 lbs (4.6 kg)
7.9 lbs (3.6 kg)

Borders Size (Bezels)  
 

0.3" (0.7 cm)
0.3" (0.7 cm)

Controls 
 

Controls Picture  

Dell Alienware AW2720HF Controls Picture
Dell Alienware AW2521HF Controls Picture

Show text

In The Box 
 

In The Box Picture  

Dell Alienware AW2720HF In The Box Picture
Dell Alienware AW2521HF In The Box Picture

Power Supply 
 

Internal
Internal

Show text

Back  

Back Picture  

Dell Alienware AW2720HF Back Picture
Dell Alienware AW2521HF Back Picture

Wall Mount  

VESA 100x100
VESA 100x100

Show text

Borders  

Borders Picture  

Dell Alienware AW2720HF Borders Picture

Borders 
 

0.3" (0.7 cm)
0.3" (0.7 cm)

Show text

Thickness  

Thickness Picture  

Dell Alienware AW2720HF Thickness Picture
Dell Alienware AW2521HF Thickness Picture

Thickness (with stand) 
 

8.9" (22.5 cm)
8.9" (22.5 cm)

Thickness (without stand) 
 

3.0" (7.6 cm)
3.0" (7.7 cm)

Show text

Picture Quality

Contrast 
 

5.8
6.3

Checkerboard Picture  

Dell Alienware AW2720HF Checkerboard Picture
Dell Alienware AW2521HF Checkerboard Picture

Native Contrast 
 

877 : 1
1,198 : 1

Contrast With Local Dimming 
 

N/A
N/A

Show text

Local Dimming 
 

0.0
0.0

Local Dimming Video  

Local Dimming 
 

No
No

Backlight 
 

Edge
Edge

Show text

SDR Brightness 
 

7.8
8.2

Real Scene 
 

326 cd/m²
406 cd/m²

Peak 2% Window 
 

333 cd/m²
409 cd/m²

Peak 10% Window 
 

335 cd/m²
410 cd/m²

Peak 25% Window 
 

335 cd/m²
410 cd/m²

Peak 50% Window 
 

335 cd/m²
411 cd/m²

Peak 100% Window 
 

335 cd/m²
411 cd/m²

Sustained 2% Window 
 

333 cd/m²
408 cd/m²

Sustained 10% Window 
 

335 cd/m²
410 cd/m²

Sustained 25% Window 
 

335 cd/m²
410 cd/m²

Sustained 50% Window 
 

335 cd/m²
410 cd/m²

Sustained 100% Window 
 

335 cd/m²
411 cd/m²

Automatic Brightness Limiting (ABL) 
 

0.000
0.000

Minimum Brightness 
 

32 cd/m²

Show text

HDR Brightness 
 

0.0
0.0

EOTF  

Dell Alienware AW2521HF EOTF

VESA DisplayHDR Certification 
 

No Certification

Real Scene 
 

N/A
N/A

Peak 2% Window 
 

N/A
N/A

Peak 10% Window 
 

N/A
N/A

Peak 25% Window 
 

N/A
N/A

Peak 50% Window 
 

N/A
N/A

Peak 100% Window 
 

N/A
N/A

Sustained 2% Window 
 

N/A
N/A

Sustained 10% Window 
 

N/A
N/A

Sustained 25% Window 
 

N/A
N/A

Sustained 50% Window 
 

N/A
N/A

Sustained 100% Window 
 

N/A
N/A

Automatic Brightness Limiting (ABL) 
 

N/A
N/A

Show text

Horizontal Viewing Angle 
 

8.4
8.4

Horizontal Viewing Angle Video  

Horizontal Chroma Graph  

Dell Alienware AW2720HF Horizontal Chroma Graph
Dell Alienware AW2521HF Horizontal Chroma Graph

Color Washout From Left 
 

45°
45°

Color Washout From Right 
 

47°
45°

Horizontal Hue Graph  

Dell Alienware AW2720HF Horizontal Hue Graph
Dell Alienware AW2521HF Horizontal Hue Graph

Color Shift From Left 
 

50°
58°

Color Shift From Right 
 

53°
57°

Horizontal Lightness Graph  

Dell Alienware AW2720HF Horizontal Lightness Graph
Dell Alienware AW2521HF Horizontal Lightness Graph

Brightness Loss From Left 
 

47°
46°

Brightness Loss From Right 
 

50°
46°

Black Level Raise From Left 
 

70°
70°

Black Level Raise From Right 
 

70°
70°

Gamma Shift From Left 
 

55°
58°

Gamma Shift From Right 
 

58°
57°

Show text

Vertical Viewing Angle 
 

6.3
7.0

Vertical Viewing Angle Video  

Vertical Chroma Graph  

Dell Alienware AW2720HF Vertical Chroma Graph
Dell Alienware AW2521HF Vertical Chroma Graph

Color Washout From Below 
 

29°
31°

Color Washout From Above 
 

35°
31°

Vertical Hue Graph  

Dell Alienware AW2720HF Vertical Hue Graph
Dell Alienware AW2521HF Vertical Hue Graph

Color Shift From Below 
 

21°
39°

Color Shift From Above 
 

37°
42°

Vertical Lightness Graph  

Dell Alienware AW2720HF Vertical Lightness Graph
Dell Alienware AW2521HF Vertical Lightness Graph

Brightness Loss From Below 
 

35°
35°

Brightness Loss From Above 
 

39°
35°

Black Level Raise From Below 
 

20°
70°

Black Level Raise From Above 
 

52°
70°

Gamma Shift From Below 
 

27°
32°

Gamma Shift From Above 
 

35°
32°

Show text

Gray Uniformity 
 

8.8
7.8

50% Uniformity Picture  

Dell Alienware AW2720HF 50% Uniformity Picture
Dell Alienware AW2521HF 50% Uniformity Picture

50% Std. Dev. 
 

2.697%
3.370%

50% DSE 
 

0.104%
0.149%

5% Uniformity Picture  

Dell Alienware AW2720HF 5% Uniformity Picture

5% Std. Dev. 
 

0.155%

5% DSE 
 

0.035%

Show text

Black Uniformity 
 

2.4
5.7

Native Black Uniformity Picture  

Dell Alienware AW2720HF Native Black Uniformity Picture
Dell Alienware AW2521HF Native Black Uniformity Picture

Native Std. Dev. 
 

4.406%
2.227%

Black Uniformity Picture With Local Dimming  

Dell Alienware AW2720HF Black Uniformity Picture With Local Dimming
Dell Alienware AW2521HF Black Uniformity Picture With Local Dimming

Std. Dev. w/ L.D. 
 

N/A
N/A

Show text

Color Accuracy (Pre-Calibration) 
 

7.3
7.6

Pre Calibration Picture  

Dell Alienware AW2720HF Pre Calibration Picture
Dell Alienware AW2521HF Pre Calibration Picture

Pre Gamma Curve Picture  

Dell Alienware AW2720HF Pre Gamma Curve Picture
Dell Alienware AW2521HF Pre Gamma Curve Picture

Pre Color Picture  

Dell Alienware AW2720HF Pre Color Picture
Dell Alienware AW2521HF Pre Color Picture

Picture Mode 
 

RPG
Game 1

sRGB Gamut Area xy 
 

112.2%

White Balance dE (Avg.) 
 

2.48
1.90

Color Temperature (Avg.) 
 

6,224 K
6,826 K

Gamma (Avg.) 
 

2.39
2.09

Color dE (Avg.) 
 

3.85
3.22

Contrast Setting 
 

75
75

RGB Settings 
 

100-100-100
100-100-100

Gamma Setting 
 

No Gamma Setting
No Gamma Setting

Brightness Setting 
 

24
75

Measured Brightness 
 

103 cd/m²
256 cd/m²

Brightness Locked 
 

No

Show text

Color Accuracy (Post-Calibration) 
 

9.6
9.7

Post Calibration Picture  

Dell Alienware AW2720HF Post Calibration Picture
Dell Alienware AW2521HF Post Calibration Picture

Post Gamma Curve Picture  

Dell Alienware AW2720HF Post Gamma Curve Picture
Dell Alienware AW2521HF Post Gamma Curve Picture

Post Color Picture  

Dell Alienware AW2720HF Post Color Picture
Dell Alienware AW2521HF Post Color Picture

Picture Mode 
 

Custom Color
Game 1

sRGB Gamut Area xy 
 

98.7%

White Balance dE (Avg.) 
 

0.53
0.54

Color Temperature (Avg.) 
 

6,542 K
6,489 K

Gamma (Avg.) 
 

2.17
2.18

Color dE (Avg.) 
 

0.53
0.45

Contrast Setting 
 

73
75

RGB Settings 
 

95-99-100
100-98-98

Gamma Setting 
 

No Gamma Setting
No Gamma Setting

Brightness Setting 
 

29
22

Measured Brightness 
 

101 cd/m²
101 cd/m²

ICC Profile 
 

Show text

SDR Color Gamut 
 

8.7
8.9

sRGB Color Gamut Picture  

Dell Alienware AW2720HF sRGB Color Gamut Picture
Dell Alienware AW2521HF sRGB Color Gamut Picture

sRGB Coverage xy 
 

97.2%
97.7%

sRGB Picture Mode 
 

Custom Color
Game 1

Adobe RGB Color Gamut Picture  

Dell Alienware AW2720HF Adobe RGB Color Gamut Picture
Dell Alienware AW2521HF Adobe RGB Color Gamut Picture

Adobe RGB Coverage xy 
 

76.5%
75.2%

Adobe RGB Picture Mode 
 

Custom Color
Game 1

Show text

SDR Color Volume 
 

8.9
9.4

sRGB Color Volume ITP Picture  

Dell Alienware AW2720HF sRGB Color Volume ITP Picture
Dell Alienware AW2521HF sRGB Color Volume ITP Picture

sRGB In ICtCp 
 

96.1%
96.7%

sRGB Picture Mode 
 

Custom Color
Game 1

Adobe RGB Color Volume ITP Picture  

Dell Alienware AW2720HF Adobe RGB Color Volume ITP Picture
Dell Alienware AW2521HF Adobe RGB Color Volume ITP Picture

Adobe RGB In ICtCp 
 

82.1%
80.4%

Adobe RGB Picture Mode 
 

Custom Color
Game 1

Show text

HDR Color Gamut 
 

0.0
0.0

Wide Color Gamut 
 

N/A
N/A

DCI-P3 Color Gamut Picture  

Dell Alienware AW2720HF DCI-P3 Color Gamut Picture
Dell Alienware AW2521HF DCI-P3 Color Gamut Picture

DCI-P3 Coverage xy 
 

N/A

DCI-P3 Picture Mode 
 

No HDR
No HDR

Rec. 2020 Color Gamut Picture  

Dell Alienware AW2720HF Rec. 2020 Color Gamut Picture
Dell Alienware AW2521HF Rec. 2020 Color Gamut Picture

Rec. 2020 Coverage xy 
 

N/A
N/A

Rec. 2020 Picture Mode 
 

No HDR
No HDR

DCI P3 xy 
 

N/A

Show text

HDR Color Volume 
 

0.0
0.0

DCI-P3 Color Volume ITP Picture  

Dell Alienware AW2720HF DCI-P3 Color Volume ITP Picture
Dell Alienware AW2521HF DCI-P3 Color Volume ITP Picture

DCI-P3 In ICtCp 
 

N/A
N/A

DCI-P3 Picture Mode 
 

No HDR
No HDR

Rec. 2020 Color Volume ITP Picture  

Dell Alienware AW2720HF Rec. 2020 Color Volume ITP Picture
Dell Alienware AW2521HF Rec. 2020 Color Volume ITP Picture

Rec. 2020 In ICtCp 
 

N/A
N/A

Rec. 2020 Picture Mode 
 

No HDR
No HDR

Show text

Image Retention 
 

10

Image Retention Picture  

Dell Alienware AW2720HF Image Retention Picture

IR After 0 Min Recovery 
 

0.00%

IR After 2 Min Recovery 
 

0.00%

IR After 4 Min Recovery 
 

0.00%

IR After 6 Min Recovery 
 

0.00%

IR After 8 Min Recovery 
 

0.00%

IR After 10 Min Recovery 
 

0.00%

Show text

Reflections 
 

8.0
8.3

Average Room  

Dell Alienware AW2720HF Average Room
Dell Alienware AW2521HF Average Room

Average Room Off Picture  

Dell Alienware AW2720HF Average Room Off Picture
Dell Alienware AW2521HF Average Room Off Picture

Bright Room Off Picture  

Dell Alienware AW2720HF Bright Room Off Picture
Dell Alienware AW2521HF Bright Room Off Picture

Screen Finish 
 

Matte
Matte

Total Reflections 
 

5.2%
4.9%

Indirect Reflections 
 

4.3%
4.6%

Calculated Direct Reflections 
 

0.9%
0.3%

Show text

Text Clarity 
 

7.0
7.0

ClearType On  

Dell Alienware AW2720HF ClearType On
Dell Alienware AW2521HF ClearType On

ClearType Off  

Dell Alienware AW2720HF ClearType Off
Dell Alienware AW2521HF ClearType Off

Pixel Type 
 

IPS
IPS

Pixels  

Dell Alienware AW2720HF Pixels
Dell Alienware AW2521HF Pixels

Subpixel Layout 
 

RGB
RGB

Show text

Gradient 
 

8.0
8.0

Gradient Picture  

Dell Alienware AW2720HF Gradient Picture
Dell Alienware AW2521HF Gradient Picture

Color Depth 
 

8 Bit
8 Bit

Show text

Color Bleed 
 

9.9

Color Bleed Horizontal  

Dell Alienware AW2720HF Color Bleed Horizontal

Pixel Row Error 
 

0.000%

Color Bleed Vertical  

Dell Alienware AW2720HF Color Bleed Vertical

Pixel Column Error 
 

0.021%

Show text

Motion

Refresh Rate 
 

9.0

Native Refresh Rate 
 

240 Hz
240 Hz

Max Refresh Rate 
 

240 Hz
240 Hz

Max Refresh Rate Over DP 
 

240 Hz

Max Refresh Rate Over HDMI 
 

240 Hz

Max Refresh Rate Over DP @ 10-bit 
 

N/A

Max Refresh Rate Over HDMI @ 10-Bit 
 

N/A

Variable Refresh Rate (VRR) 
 

FreeSync 
 

Yes
Yes

G-SYNC 
 

Compatible (NVIDIA Certified)
Compatible (NVIDIA Certified)

VRR Maximum 
 

240 Hz
240 Hz

VRR Minimum 
 

< 20 Hz
< 20 Hz

VRR Supported Connectors 
 

DisplayPort, HDMI
DisplayPort, HDMI

Variable Refresh Rate 
 

FreeSync
Yes

Native 
 

240 Hz
240 Hz

Max Refresh Rate 
 

240 Hz
240 Hz

Variable Refresh Rate 
 

Yes

Show text

Response Time @ Max Refresh Rate 
 

9.7
9.5

Motion Blur Picture  

Dell Alienware AW2720HF Motion Blur Picture
Dell Alienware AW2521HF Motion Blur Picture

Response Time Table  

Dell Alienware AW2720HF Response Time Table
Dell Alienware AW2521HF Response Time Table

Recommended Overdrive Setting 
 

Fast
Extreme

Rise / Fall Time 
 

3.0 ms
2.9 ms

Total Response Time 
 

5.8 ms
5.1 ms

Overshoot Error 
 

0.8%
0.3%

Worst 3 Rise / Fall Time 
 

3.1 ms
3.3 ms

Worst 3 Total Response Time 
 

7.1 ms
9.4 ms

Worst 3 Overshoot Error 
 

1.0%
2.7%

Show text

Response Time @ 120Hz 
 

8.8

Motion Blur Picture  

Dell Alienware AW2521HF Motion Blur Picture

Response Time Table  

Dell Alienware AW2521HF Response Time Table

Recommended Overdrive Setting 
 

Fast

Rise / Fall Time 
 

4.6 ms

Total Response Time 
 

7.6 ms

Overshoot Error 
 

0.0%

Worst 3 Rise / Fall Time 
 

5.9 ms

Worst 3 Total Response Time 
 

9.2 ms

Worst 3 Overshoot Error 
 

0.0%

Show text

Response Time @ 60Hz 
 

7.9
7.8

Motion Blur Picture  

Dell Alienware AW2720HF Motion Blur Picture
Dell Alienware AW2521HF Motion Blur Picture

Response Time Table  

Dell Alienware AW2720HF Response Time Table
Dell Alienware AW2521HF Response Time Table

Recommended Overdrive Setting 
 

Fast
Fast

Rise / Fall Time 
 

3.9 ms
4.6 ms

Total Response Time 
 

17.3 ms
13.4 ms

Overshoot Error 
 

6.8%
2.3%

Worst 3 Rise / Fall Time 
 

4.1 ms
5.8 ms

Worst 3 Total Response Time 
 

21.0 ms
22.0 ms

Worst 3 Overshoot Error 
 

9.2%
9.5%

Show text

Backlight Strobing (BFI) 
 

Backlight Strobing Picture  

Dell Alienware AW2720HF Backlight Strobing Picture
Dell Alienware AW2521HF Backlight Strobing Picture

Backlight Strobing Frequency Picture  

Dell Alienware AW2720HF Backlight Strobing Frequency Picture
Dell Alienware AW2521HF Backlight Strobing Frequency Picture

Backlight Strobing (BFI) 
 

No BFI
No BFI

Maximum Frequency 
 

N/A
N/A

Minimum Frequency 
 

N/A
N/A

Longest Pulse Width Brightness 
 

N/A

Shortest Pulse Width Brightness 
 

N/A

Pulse Width Control 
 

No BFI

Pulse Phase Control 
 

No BFI

Pulse Amplitude Control 
 

No BFI

VRR At The Same Time 
 

No BFI

Show text

Image Flicker 
 

10
10

Backlight Picture  

Dell Alienware AW2720HF Backlight Picture
Dell Alienware AW2521HF Backlight Picture

Flicker-Free 
 

Yes
Yes

PWM Dimming Frequency 
 

0 Hz
0 Hz

Show text

Inputs

Input Lag 
 

9.6
9.1

Native Resolution @ Max Hz 
 

2.8 ms
2.7 ms

Native Resolution @ 120Hz 
 

4.9 ms

Native Resolution @ 60Hz 
 

14.3 ms
9.7 ms

Variable Refresh Rate 
 

3.0 ms

Variable Refresh Rate @ 60Hz 
 

15.1 ms

10 Bit HDR 
 

N/A

Backlight Strobing (BFI) 
 

N/A
N/A

Show text

Resolution And Size 
 

7.1
6.7

Native Resolution 
 

1920 x 1080
1920 x 1080

Aspect Ratio 
 

16:9
16:9

Megapixels 
 

2.1 MP
2.1 MP

Pixel Density 
 

82 PPI
91 PPI

Measured Screen Diagonal 
 

27.0"
24.5"

Screen Area 
 

310 in²
255 in²

Show text

PS5 Compatibility 
 

3.0

PS5 Compatibility Photo  

Dell Alienware AW2521HF PS5 Compatibility Photo

4k @ 120Hz 
 

No

4k @ 60Hz 
 

No

1440p @ 120Hz 
 

No

1440p @ 60Hz 
 

No

1080p @ 120Hz 
 

Yes

1080p @ 60Hz 
 

Yes

HDR 
 

No

VRR 
 

No

Show text

Xbox Series X|S Compatibility 
 

4.2

XSX Compatibility Photo  

Dell Alienware AW2521HF XSX Compatibility Photo

4k @ 120Hz 
 

No

4k @ 60Hz 
 

No

1440p @ 120Hz 
 

No

1440p @ 60Hz 
 

No

1080p @ 120Hz 
 

Yes

1080p @ 60Hz 
 

Yes

HDR 
 

No

VRR 
 

Yes

Inputs Photos  

Inputs 1  

Dell Alienware AW2720HF Inputs 1
Dell Alienware AW2521HF Inputs 1

Inputs 2  

Dell Alienware AW2720HF Inputs 2
Dell Alienware AW2521HF Inputs 2

Video And Audio Ports 
 

DisplayPort 
 

1 (DP 1.2)
1 (DP 1.2)

Mini DisplayPort 
 

No
No

HDMI 
 

2 (HDMI 2.0)
2 (HDMI 2.0)

HDMI 2.1 Rated Speed 
 

No HDMI 2.1

DVI 
 

No
No

VGA 
 

No
No

Daisy Chaining 
 

No

3.5mm Audio Out 
 

1
1

HDR10 
 

No
No

3.5mm Audio In 
 

No

3.5mm Microphone In 
 

No
No

DisplayPort Out  

No

USB  

4 (USB 3.0)
4

USB C  

No
0

Digital Optical Audio Out  

No

Analog Audio Out RCA  

No

Power Supply  

Internal
Internal

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USB 
 

USB-A Ports 
 

4 (USB 3.0)
4

USB-A Rated Speed 
 

5Gbps (USB 3.2 Gen 1)

USB-B Upstream Port 
 

Yes

USB-C Ports 
 

No
0

USB-C Upstream 
 

No USB-C Ports

USB-C Rated Speed 
 

No USB-C Ports

USB-C Power Delivery 
 

No USB-C Ports

USB-C DisplayPort Alt Mode 
 

No USB-C Ports

Thunderbolt 
 

No

macOS Compatibility 
 

macOS Screenshot  

Dell Alienware AW2521HF macOS Screenshot

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Features

Additional Features 
 

Speakers 
 

No
No

RGB Illumination 
 

Controllable
Controllable

Multiple Input Display 
 

No
No

KVM Switch 
 

No

HDR10  

No
No

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On-Screen Display (OSD) 
 

OSD Picture  

Dell Alienware AW2720HF OSD Picture
Dell Alienware AW2521HF OSD Picture

Controls  

Controls Picture  

Dell Alienware AW2720HF Controls Picture
Dell Alienware AW2521HF Controls Picture

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In The Box  

In The Box Picture  

Dell Alienware AW2720HF In The Box Picture
Dell Alienware AW2521HF In The Box Picture

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Check Price

27"
Alienware AW2720HF
SEE PRICE
Amazon.com
25"
Alienware AW2521HF
SEE PRICE
Amazon.com
27"
Alienware AW2720HF
SEE PRICE
BestBuy.com
25"
Alienware AW2521HF
SEE PRICE
Walmart.com
27"
Alienware AW2720HF
B&H
25"
Alienware AW2521HF
B&H
27"
Alienware AW2720HF
Walmart.com
25"
Alienware AW2521HF
BestBuy.com

Dell Alienware AW2720HF

Dell Alienware AW2521HF

Comments

  1. Comparison

Dell Alienware AW2720HF vs Dell Alienware AW2521HF: Main Discussion

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