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- Table of Contents
- Top
- Main Differences
- Design
- Picture Quality
- Motion
- Inputs
- Features
- Comments
Dell S3221QS vs Dell UltraSharp U4021QW
Side-by-Side Comparison
Products
Dell S3221QS
Dell UltraSharp U4021QW
Tested using Methodology v1.2
Updated Jan 15, 2025 02:19 PM
SEE PRICE
Amazon.comTested using Methodology v1.1
Updated May 03, 2024 05:02 PM
SEE PRICE
Amazon.com
Max Refresh Rate60 Hz
Size32"
Pixel TypeVA
Variable Refresh RateYes
HDR10Yes
Native Resolution3840 x 2160
Max Refresh Rate60 Hz
Size40"
Pixel TypeIPS
Variable Refresh RateNo VRR
HDR10No
Native Resolution5120 x 2160
Variants
- S3221QS (32")
- UltraSharp U4021QW (40")
Our Verdict
Dell S3221QS
Dell UltraSharp U4021QW
The Dell S3221QS and the Dell UltraSharp U4021QW are good monitors overall, but they have a few key differences. The S3221QS is smaller and uses a VA panel, so it has a higher contrast ratio than the U4021WQ. On the other hand, the U4021QW is a larger, ultrawide monitor with an IPS panel, so it has wider viewing angles. It also has a higher 5k resolution for an exceptionally sharp image, but it lacks extra features like VRR support and HDR.
Check Price
32"
S3221QS
SEE PRICE
Amazon.com40"
UltraSharp U4021QW
SEE PRICE
Amazon.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
7.4
7.5
Horizontal Viewing Angle
6.3
8.0
Vertical Viewing Angle
5.8
7.1
Ergonomics
5.0
6.4
HDR Color Gamut
8.1
0.0
Full Comparison
Design
Style
Design Picture
Curved
Yes
Yes
Curve Radius
1800R
2500R
Size
32"
40"
Weight (without stand)
16.8 lbs (7.6 kg)
20.9 lbs (9.5 kg)
Weight (with stand)
23.4 lbs (10.6 kg)
30.4 lbs (13.8 kg)
Accelerated Longevity Test
Uniformity Pictures
Longevity Graph
Build Quality
7.5
7.0
Build Quality Picture
Ergonomics
5.0
6.4
Ergonomics Picture
Back Picture
Height Adjustment
2.8" (7.0 cm)
4.7" (12.0 cm)
Tilt Range
-20° to 5°
-20° to 5°
Rotate Portrait/Landscape
No
No
Swivel Range
No swivel
-35° to 35°
Wall Mount
VESA 100x100
VESA 100x100
Stand
Stand Picture
Thickness Picture
Base Width
11.8" (30.0 cm)
15.2" (38.5 cm)
Base Depth
8.2" (20.8 cm)
9.7" (24.7 cm)
Thickness (With Display)
6.7" (16.9 cm)
8.3" (21.1 cm)
Weight (With Display)
23.4 lbs (10.6 kg)
30.4 lbs (13.8 kg)
Display
Display Picture
Size
32"
40"
Housing Width
28.0" (71.0 cm)
Housing Height
16.6" (42.2 cm)
Thickness (Without Stand)
2.6" (6.6 cm)
4.0" (10.1 cm)
Weight (Without Stand)
16.8 lbs (7.6 kg)
20.9 lbs (9.5 kg)
Borders Size (Bezels)
0.3" (0.8 cm)
0.4" (1.1 cm)
Controls
Controls Picture
In The Box
In The Box Picture
Power Supply
Internal
Internal
Back
Back Picture
Wall Mount
VESA 100x100
VESA 100x100
Borders
Borders Picture
Borders
0.3" (0.8 cm)
0.4" (1.1 cm)
Thickness
Thickness Picture
Thickness (with stand)
6.7" (16.9 cm)
8.3" (21.1 cm)
Thickness (without stand)
2.6" (6.6 cm)
4.0" (10.1 cm)
Picture Quality
Contrast
8.0
5.9
Checkerboard Picture
Native Contrast
3,194 : 1
943 : 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
7.5
7.1
Real Scene
304 cd/m²
256 cd/m²
Peak 2% Window
299 cd/m²
279 cd/m²
Peak 10% Window
300 cd/m²
279 cd/m²
Peak 25% Window
300 cd/m²
280 cd/m²
Peak 50% Window
300 cd/m²
280 cd/m²
Peak 100% Window
300 cd/m²
280 cd/m²
Sustained 2% Window
299 cd/m²
278 cd/m²
Sustained 10% Window
300 cd/m²
279 cd/m²
Sustained 25% Window
300 cd/m²
279 cd/m²
Sustained 50% Window
300 cd/m²
279 cd/m²
Sustained 100% Window
300 cd/m²
280 cd/m²
Automatic Brightness Limiting (ABL)
0.000
0.000
Minimum Brightness
24 cd/m²
HDR Brightness
6.4
0.0
EOTF
VESA DisplayHDR Certification
No Certification
Real Scene
335 cd/m²
N/A
Peak 2% Window
372 cd/m²
N/A
Peak 10% Window
372 cd/m²
N/A
Peak 25% Window
372 cd/m²
N/A
Peak 50% Window
373 cd/m²
N/A
Peak 100% Window
373 cd/m²
N/A
Sustained 2% Window
371 cd/m²
N/A
Sustained 10% Window
372 cd/m²
N/A
Sustained 25% Window
372 cd/m²
N/A
Sustained 50% Window
372 cd/m²
N/A
Sustained 100% Window
372 cd/m²
N/A
Automatic Brightness Limiting (ABL)
0.000
N/A
Horizontal Viewing Angle
6.3
8.0
Horizontal Viewing Angle Video
Horizontal Chroma Graph
Color Washout From Left
43°
43°
Color Washout From Right
45°
45°
Horizontal Hue Graph
Color Shift From Left
70°
49°
Color Shift From Right
70°
51°
Horizontal Lightness Graph
Brightness Loss From Left
36°
49°
Brightness Loss From Right
34°
51°
Black Level Raise From Left
17°
70°
Black Level Raise From Right
20°
70°
Gamma Shift From Left
9°
40°
Gamma Shift From Right
12°
41°
Vertical Viewing Angle
5.8
7.1
Vertical Viewing Angle Video
Vertical Chroma Graph
Color Washout From Below
30°
33°
Color Washout From Above
31°
30°
Vertical Hue Graph
Color Shift From Below
70°
38°
Color Shift From Above
70°
33°
Vertical Lightness Graph
Brightness Loss From Below
30°
36°
Brightness Loss From Above
32°
32°
Black Level Raise From Below
11°
70°
Black Level Raise From Above
14°
70°
Gamma Shift From Below
10°
43°
Gamma Shift From Above
13°
36°
Gray Uniformity
7.8
8.5
50% Uniformity Picture
50% Std. Dev.
3.069%
2.994%
50% DSE
0.156%
0.122%
5% Uniformity Picture
5% Std. Dev.
0.398%
5% DSE
0.032%
Black Uniformity
6.4
6.8
Native Black Uniformity Picture
Native Std. Dev.
1.696%
1.434%
Black Uniformity Picture With Local Dimming
Std. Dev. w/ L.D.
N/A
N/A
Color Accuracy (Pre-Calibration)
7.5
9.1
Pre Calibration Picture
Pre Gamma Curve Picture
Pre Color Picture
Picture Mode
Color Space (sRGB)
Color Space (sRGB)
sRGB Gamut Area xy
104.0%
White Balance dE (Avg.)
5.26
1.50
Color Temperature (Avg.)
7,747 K
6,281 K
Gamma (Avg.)
2.28
2.16
Color dE (Avg.)
3.64
0.99
Contrast Setting
75
75
RGB Settings
Default
Default
Gamma Setting
No Gamma Setting
No Gamma Setting
Brightness Setting
75
75
Measured Brightness
205 cd/m²
210 cd/m²
Brightness Locked
No
Color Accuracy (Post-Calibration)
9.7
9.7
Post Calibration Picture
Post Gamma Curve Picture
Post Color Picture
Picture Mode
Custom Color
Custom Color
sRGB Gamut Area xy
100.4%
White Balance dE (Avg.)
0.64
0.65
Color Temperature (Avg.)
6,472 K
6,456 K
Gamma (Avg.)
2.19
2.18
Color dE (Avg.)
0.58
0.31
Contrast Setting
70
75
RGB Settings
97-97-100
98-97-100
Gamma Setting
No Gamma Setting
No Gamma Setting
Brightness Setting
34
28
Measured Brightness
100 cd/m²
100 cd/m²
ICC Profile
SDR Color Gamut
9.4
9.4
sRGB Color Gamut Picture
sRGB Coverage xy
99.7%
100.0%
sRGB Picture Mode
Custom Color
Custom Color
Adobe RGB Color Gamut Picture
Adobe RGB Coverage xy
80.3%
88.5%
Adobe RGB Picture Mode
Custom Color
Custom Color
SDR Color Volume
9.7
9.6
sRGB Color Volume ITP Picture
sRGB In ICtCp
99.0%
98.2%
sRGB Picture Mode
Custom Color
Custom Color
Adobe RGB Color Volume ITP Picture
Adobe RGB In ICtCp
87.6%
93.2%
Adobe RGB Picture Mode
Custom Color
Custom Color
HDR Color Gamut
8.1
0.0
Wide Color Gamut
Yes
N/A
DCI-P3 Color Gamut Picture
DCI-P3 Coverage xy
90.6%
DCI-P3 Picture Mode
Game HDR
No HDR
Rec. 2020 Color Gamut Picture
Rec. 2020 Coverage xy
65.0%
N/A
Rec. 2020 Picture Mode
Game HDR
No HDR
DCI P3 xy
N/A
HDR Color Volume
7.9
0.0
DCI-P3 Color Volume ITP Picture
DCI-P3 In ICtCp
81.1%
N/A
DCI-P3 Picture Mode
Game HDR
No HDR
Rec. 2020 Color Volume ITP Picture
Rec. 2020 In ICtCp
63.1%
N/A
Rec. 2020 Picture Mode
Game HDR
No HDR
Image Retention
10
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%
Reflections
7.7
6.7
Average Room
Average Room Off Picture
Bright Room Off Picture
Screen Finish
Matte
Matte
Total Reflections
5.0%
6.6%
Indirect Reflections
3.0%
3.2%
Calculated Direct Reflections
2.0%
3.4%
Text Clarity
9.0
9.5
ClearType On
ClearType Off
Pixel Type
VA
IPS
Pixels
Subpixel Layout
RGB
RGB
Gradient
9.8
9.8
Gradient Picture
Color Depth
10 Bit
10 Bit
Color Bleed
10
Color Bleed Horizontal
Pixel Row Error
0.001%
Color Bleed Vertical
Pixel Column Error
0.001%
Motion
Refresh Rate
6.0
Native Refresh Rate
60 Hz
60 Hz
Max Refresh Rate
60 Hz
60 Hz
Max Refresh Rate Over DP
60 Hz
Max Refresh Rate Over HDMI
60 Hz
Max Refresh Rate Over DP @ 10-bit
60 Hz
Max Refresh Rate Over HDMI @ 10-Bit
30 Hz
Variable Refresh Rate (VRR)
FreeSync
Yes
No
G-SYNC
Compatible (Tested)
No
VRR Maximum
60 Hz
N/A
VRR Minimum
40 Hz
No VRR
VRR Supported Connectors
DisplayPort, HDMI
No VRR
Variable Refresh Rate
Yes
No VRR
Native
60 Hz
60 Hz
Max Refresh Rate
60 Hz
60 Hz
Variable Refresh Rate
No
Response Time @ Max Refresh Rate
5.7
7.2
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
Normal
Normal
Rise / Fall Time
5.8 ms
6.5 ms
Total Response Time
20.9 ms
18.7 ms
Overshoot Error
7.1%
7.5%
Worst 3 Rise / Fall Time
15.2 ms
6.6 ms
Worst 3 Total Response Time
38.9 ms
20.3 ms
Worst 3 Overshoot Error
27.4%
12.5%
Response Time @ 120Hz
0.0
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
No 120Hz Refresh Rate
Rise / Fall Time
N/A
Total Response Time
N/A
Overshoot Error
N/A
Worst 3 Rise / Fall Time
N/A
Worst 3 Total Response Time
N/A
Worst 3 Overshoot Error
N/A
Response Time @ 60Hz
5.7
7.2
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
Normal
Normal
Rise / Fall Time
5.8 ms
6.5 ms
Total Response Time
20.9 ms
18.7 ms
Overshoot Error
7.1%
7.5%
Worst 3 Rise / Fall Time
15.2 ms
6.6 ms
Worst 3 Total Response Time
38.9 ms
20.3 ms
Worst 3 Overshoot Error
27.4%
12.5%
Backlight Strobing (BFI)
Backlight Strobing Picture
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
Image Flicker
10
10
Backlight Picture
Flicker-Free
Yes
Yes
PWM Dimming Frequency
0 Hz
0 Hz
Inputs
Input Lag
8.1
9.0
Native Resolution @ Max Hz
9.6 ms
8.9 ms
Native Resolution @ 120Hz
N/A
Native Resolution @ 60Hz
9.6 ms
8.9 ms
Variable Refresh Rate
N/A
Variable Refresh Rate @ 60Hz
N/A
10 Bit HDR
N/A
Backlight Strobing (BFI)
N/A
N/A
Resolution And Size
9.0
9.4
Native Resolution
3840 x 2160
5120 x 2160
Aspect Ratio
16:9
21:9
Megapixels
8.3 MP
11.1 MP
Pixel Density
140 PPI
137 PPI
Measured Screen Diagonal
31.5"
40.0"
Screen Area
424 in²
581 in²
PS5 Compatibility
6.0
PS5 Compatibility Photo
4k @ 120Hz
No
4k @ 60Hz
Yes
1440p @ 120Hz
No
1440p @ 60Hz
Yes
1080p @ 120Hz
No
1080p @ 60Hz
Yes
HDR
Yes
VRR
No
Xbox Series X|S Compatibility
7.5
XSX Compatibility Photo
4k @ 120Hz
No
4k @ 60Hz
Yes
1440p @ 120Hz
No
1440p @ 60Hz
Yes
1080p @ 120Hz
No
1080p @ 60Hz
Yes
HDR
Yes
VRR
Yes
Inputs Photos
Inputs 1
Inputs 2
Video And Audio Ports
DisplayPort
1 (DP 1.2)
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
DVI
No
No
VGA
No
No
Daisy Chaining
No
3.5mm Audio Out
1
1
HDR10
Yes
No
3.5mm Audio In
No
3.5mm Microphone In
No
No
DisplayPort Out
No
USB
2
4 (USB 3.0)
USB C
0
2 (1x Thunderbolt 3, PD, DP Alt Mode, 1x USB 3.2 Gen 2)
Digital Optical Audio Out
No
Analog Audio Out RCA
No
Power Supply
Internal
Internal
USB
USB-A Ports
2
4 (USB 3.0)
USB-A Rated Speed
5Gbps (USB 3.2 Gen 1)
USB-B Upstream Port
Yes
USB-C Ports
0
2 (1x Thunderbolt 3, PD, DP Alt Mode, 1x USB 3.2 Gen 2)
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
Features
Additional Features
Speakers
Yes
Yes
RGB Illumination
No
No
Multiple Input Display
PIP + PBP
PIP + PBP
KVM Switch
No
HDR10
Yes
No
On-Screen Display (OSD)
OSD Picture
Controls
Controls Picture
In The Box
In The Box Picture
Check Price
32"
S3221QS
SEE PRICE
Amazon.com40"
UltraSharp U4021QW
SEE PRICE
Amazon.com
Dell S3221QS
Dell UltraSharp U4021QW
Comments
Dell S3221QS vs Dell UltraSharp U4021QW: Main Discussion
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