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- Table of Contents
- Top
- Main Differences
- Design
- Picture Quality
- Motion
- Inputs
- Features
- Comments
BenQ EX2780Q vs Dell S2421H
Side-by-Side Comparison
Products
BenQ EX2780Q
Dell S2421H
Tested using Methodology v1.1
Updated May 24, 2024 02:06 PM
SEE PRICE
Amazon.comTested using Methodology v1.1
Updated Feb 07, 2024 01:47 PM
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Amazon.com
Size27"
Pixel TypeIPS
Variable Refresh RateFreeSync
Native Resolution2560 x 1440
Max Refresh Rate144 Hz
Size24"
Pixel TypeIPS
Variable Refresh RateFreeSync
Native Resolution1920 x 1080
Max Refresh Rate75 Hz
Variants
- EX2780Q (27")
- S2421H (24")
Our Verdict
BenQ EX2780Q
Dell S2421H
The BenQ EX2780Q is much better than the Dell S2421H. The BenQ has a larger, higher-resolution screen, better viewing angles, and supports HDR. The BenQ also has a faster refresh rate, and a much faster response time, resulting in clearer motion with less blur behind fast-moving objects.
Check Price
27"
EX2780Q
SEE PRICE
Amazon.com24"
S2421H
SEE PRICE
Amazon.com27"
EX2780Q
SEE PRICE
BestBuy.com24"
S2421H
SEE PRICE
BestBuy.com27"
EX2780Q
SEE PRICE
Walmart.com24"
S2421H
SEE PRICE
Walmart.comMain Differences forMixed Usage
Mixed Usage
Threshold
Mixed Usage
7.6
6.9
Resolution And Size
8.3
7.1
Full Comparison
Design
Style
Design Picture
Size
27"
24"
Curved
No
No
Curve Radius
Not Curved
Not Curved
Weight (without stand)
11.7 lbs (5.3 kg)
7.4 lbs (3.3 kg)
Weight (with stand)
13.1 lbs (6.0 kg)
8.7 lbs (3.9 kg)
Stand
Stand Picture
Width
9.8" (24.9 cm)
9.8" (24.8 cm)
Depth
6.3" (16.1 cm)
6.1" (15.5 cm)
Ergonomics
1.5
1.5
Ergonomics Picture
Height Adjustment
0.0" (0.0 cm)
0.0" (0.0 cm)
Switch Portrait/Landscape
No
No
Swivel Range
No swivel
No swivel
Tilt Range
-20° to 5°
-20° to 5°
Back
Back Picture
Wall Mount
VESA 100x100
VESA 100x100
Borders
Borders Picture
Borders
0.2" (0.6 cm)
0.2" (0.5 cm)
Thickness
Thickness Picture
Thickness (with stand)
5.2" (13.3 cm)
4.4" (11.3 cm)
Thickness (without stand)
3.2" (8.1 cm)
1.9" (4.9 cm)
Build Quality
7.0
7.0
Build Quality Picture
Picture Quality
Contrast
6.2
6.2
Checkerboard Picture
Native Contrast
1,142 : 1
1,126 : 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 Peak Brightness
8.0
6.9
SDR Real Scene
337 cd/m²
250 cd/m²
SDR Peak 2% Window
358 cd/m²
265 cd/m²
SDR Peak 10% Window
359 cd/m²
266 cd/m²
SDR Peak 25% Window
359 cd/m²
266 cd/m²
SDR Peak 50% Window
358 cd/m²
267 cd/m²
SDR Peak 100% Window
358 cd/m²
267 cd/m²
SDR Sustained 2% Window
358 cd/m²
265 cd/m²
SDR Sustained 10% Window
359 cd/m²
266 cd/m²
SDR Sustained 25% Window
358 cd/m²
266 cd/m²
SDR Sustained 50% Window
358 cd/m²
266 cd/m²
SDR Sustained 100% Window
358 cd/m²
266 cd/m²
SDR ABL
0.000
0.000
HDR Peak Brightness
7.1
0.0
HDR Real Scene
455 cd/m²
N/A
HDR Peak 2% Window
480 cd/m²
N/A
HDR Peak 10% Window
480 cd/m²
N/A
HDR Peak 25% Window
480 cd/m²
N/A
HDR Peak 50% Window
480 cd/m²
N/A
HDR Peak 100% Window
479 cd/m²
N/A
HDR Sustained 2% Window
478 cd/m²
N/A
HDR Sustained 10% Window
479 cd/m²
N/A
HDR Sustained 25% Window
479 cd/m²
N/A
HDR Sustained 50% Window
479 cd/m²
N/A
HDR Sustained 100% Window
479 cd/m²
N/A
HDR ABL
0.000
N/A
Horizontal Viewing Angle
8.4
7.6
Horizontal Viewing Angle Video
Horizontal Chroma Graph
Color Washout From Left
46°
36°
Color Washout From Right
51°
39°
Horizontal Hue Graph
Color Shift From Left
54°
48°
Color Shift From Right
61°
50°
Horizontal Lightness Graph
Brightness Loss From Left
46°
44°
Brightness Loss From Right
51°
46°
Black Level Raise From Left
70°
70°
Black Level Raise From Right
70°
70°
Gamma Shift From Left
48°
35°
Gamma Shift From Right
51°
36°
Vertical Viewing Angle
6.7
7.0
Vertical Viewing Angle Video
Vertical Chroma Graph
Color Washout From Below
24°
32°
Color Washout From Above
33°
32°
Vertical Hue Graph
Color Shift From Below
35°
36°
Color Shift From Above
46°
35°
Vertical Lightness Graph
Brightness Loss From Below
29°
33°
Brightness Loss From Above
37°
33°
Black Level Raise From Below
62°
70°
Black Level Raise From Above
54°
70°
Gamma Shift From Below
26°
37°
Gamma Shift From Above
35°
39°
Gray Uniformity
8.7
8.6
50% Uniformity Picture
50% Std. Dev.
2.742%
3.554%
50% DSE
0.110%
0.109%
5% Uniformity Picture
5% Std. Dev.
0.387%
0.394%
5% DSE
0.058%
0.056%
Black Uniformity
6.1
7.0
Native Black Uniformity Picture
Native Std. Dev.
1.944%
1.345%
Black Uniformity Picture With Local Dimming
Std. Dev. w/ L.D.
N/A
N/A
Pre Calibration
7.1
7.0
Pre Calibration Picture
Pre Gamma Curve Picture
Pre Color Picture
Picture Mode
M-Book
Standard
Luminance
314 cd/m²
275 cd/m²
Luminance Settings
100
100
Contrast Setting
50
75
RGB Controls
100-100-100
Default
Gamma Setting
2.2 (Default)
No Gamma Setting
Color Temperature
6,521 K
7,347 K
White Balance dE
3.51
3.86
Color dE
3.18
2.98
Gamma
2.48
2.21
Post Calibration
9.6
9.6
Post Calibration Picture
Post Gamma Curve Picture
Post Color Picture
Picture Mode
User
Custom Color
Luminance
102 cd/m²
100 cd/m²
Luminance Settings
13
29
Contrast Setting
50
75
RGB Controls
96-99-100
99-100-93
Gamma Setting
2.2 (Default)
No Gamma Setting
Color Temperature
6,580 K
6,428 K
White Balance dE
0.73
0.60
Color dE
0.53
0.60
Gamma
2.18
2.18
SDR Color Gamut
9.3
8.5
Color Gamut sRGB Picture
sRGB xy
99.6%
95.9%
Color Gamut ARGB Picture
Adobe RGB xy
86.3%
73.9%
sRGB Picture Mode
User
Custom Color
Adobe RGB Picture Mode
User
Custom Color
SDR Color Volume
9.5
8.6
sRGB Color Volume ITP Picture
sRGB In ICtCp
98.0%
94.4%
Adobe RGB Color Volume ITP Picture
Adobe RGB In ICtCp
91.6%
77.9%
sRGB Picture Mode
User
Custom Color
Adobe RGB Picture Mode
User
Custom Color
HDR Color Gamut
6.9
0.0
Wide Color Gamut
Yes
N/A
Color Gamut DCI-P3 Picture
DCI P3 xy
70.4%
N/A
Color Gamut Rec.2020 Picture
Rec. 2020 xy
68.4%
N/A
DCI P3 Picture Mode
Display HDR
No HDR
Rec. 2020 Picture Mode
Display HDR
No HDR
HDR Color Volume
6.2
0.0
P3 Color Volume ITP Picture
DCI-P3 In ICtCp
62.0%
N/A
2020 Color Volume ITP Picture
Rec. 2020 In ICtCp
62.4%
N/A
DCI P3 Picture Mode
Display HDR
No HDR
Rec. 2020 Picture Mode
Display HDR
No HDR
Image Retention
10
10
Image Retention Picture
IR After 0 Min Recovery
0.00%
0.00%
IR After 2 Min Recovery
0.00%
0.00%
IR After 4 Min Recovery
0.00%
0.00%
IR After 6 Min Recovery
0.00%
0.00%
IR After 8 Min Recovery
0.00%
0.00%
IR After 10 Min Recovery
0.00%
0.00%
Gradient
9.0
7.9
Gradient Picture
Color Depth
10 Bit
8 Bit
Color Bleed
8.0
10
Color Bleed Horizontal
Pixel Row Error
0.001%
0.003%
Color Bleed Vertical
Pixel Column Error
0.408%
0.001%
Reflections
7.5
7.8
Average Room
Average Room Off Picture
Bright Room Off Picture
Screen Finish
Matte
Matte
Total Reflections
5.1%
5.1%
Indirect Reflections
2.7%
3.8%
Calculated Direct Reflections
2.4%
1.4%
Text Clarity
7.0
7.0
ClearType On
Pixel Type
IPS
IPS
ClearType Off
Pixels
Sub-Pixel Layout
RGB
RGB
Motion
Response Time @ Max Refresh Rate
8.7
7.6
Motion Blur Picture
Response Time Table
Best Overdrive Setting
Premium
Normal
Rise / Fall Time
5.2 ms
7.5 ms
Total Response Time
11.8 ms
16.7 ms
Overshoot Error
3.3%
3.0%
Dark Rise / Fall Time
6.5 ms
8.7 ms
Dark Total Response Time
14.1 ms
18.8 ms
Dark Overshoot Error
0.0%
2.0%
Response Time @ 60Hz
8.0
6.8
Motion Blur Picture
Response Time Table
Best Overdrive Setting
High
Normal
Rise / Fall Time
7.7 ms
7.2 ms
Total Response Time
13.7 ms
20.9 ms
Overshoot Error
0%
6.6%
Dark Rise / Fall Time
9.0 ms
8.1 ms
Dark Total Response Time
15.5 ms
21.9 ms
Dark Overshoot Error
0.0%
7.4%
Image Flicker
10
10
Backlight Picture
Flicker-Free
Yes
Yes
PWM Dimming Frequency
0 Hz
0 Hz
Black Frame Insertion (BFI)
0.0
0.0
Black Frame Insertion (BFI)
No BFI
No BFI
BFI Picture
BFI Frequency Picture
BFI Maximum Frequency
N/A
N/A
BFI Minimum Frequency
N/A
N/A
Refresh Rate
9.0
7.7
Variable Refresh Rate
FreeSync
FreeSync
Native
144 Hz
75 Hz
Max Refresh Rate
144 Hz
75 Hz
Variable Refresh Rate
Yes
Yes
FreeSync
Yes
Yes
G-SYNC
Compatible (Tested)
No
VRR Maximum
144 Hz
75 Hz
VRR Minimum
< 20 Hz
48 Hz
VRR Supported Connectors
DisplayPort, HDMI
HDMI
Inputs
Input Lag
9.5
9.2
Native Resolution
4.1 ms
7.4 ms
Native Resolution @ 60Hz
9.0 ms
8.9 ms
Variable Refresh Rate
4.1 ms
7.4 ms
Variable Refresh Rate @ 60Hz
8.8 ms
9.2 ms
10 Bit HDR
4.7 ms
N/A
Black Frame Insertion (BFI)
N/A
N/A
Resolution And Size
8.3
7.1
Native Resolution
2560 x 1440
1920 x 1080
Aspect Ratio
16:9
16:9
Megapixels
3.7 MP
2.1 MP
Pixel Density
109 PPI
93 PPI
Screen Diagonal
27.0"
23.8"
Screen Area
310 in²
241 in²
Inputs
Inputs 1
Inputs 2
Total Inputs
DisplayPort
1 (DP 1.4)
No
Mini DisplayPort
No
No
HDMI
2 (HDMI 2.0)
2 (HDMI 1.4)
DVI
No
No
VGA
No
No
DisplayPort Out
No
No
USB
No
No
USB C
1
No
Analog Audio Out 3.5mm
1
1
Microphone In 3.5mm
1
No
Digital Optical Audio Out
No
No
Analog Audio Out RCA
No
No
Power Supply
Internal
Internal
Features
Additional Features
RGB Illumination
No
No
Speakers
Yes
Yes
HDR10
Yes
No
Multiple Input Display
No
No
On-Screen Display (OSD)
OSD Picture
Controls
Controls Picture
In The Box
In The Box Picture
Check Price
27"
EX2780Q
SEE PRICE
Amazon.com24"
S2421H
SEE PRICE
Amazon.com27"
EX2780Q
SEE PRICE
BestBuy.com24"
S2421H
SEE PRICE
BestBuy.com27"
EX2780Q
SEE PRICE
Walmart.com24"
S2421H
SEE PRICE
Walmart.com
BenQ EX2780Q
Dell S2421H
Comments
BenQ EX2780Q vs Dell S2421H: Main Discussion
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