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Compare Dell UltraSharp U4021QW vs UltraSharp U3821DW vs Dell U3023E

Connectivity

Ports
1x USB 3.2 (Type-C; downstream; 15W), 1x Ethernet RJ45 (Gigabit), 1x DisplayPort 1.4, 1x 3.5 mm Audio Out (line-out for speakers), 1x Thunderbolt 3.0 (Type-C; upstream; 90W; DP Alt Mode), 2x HDMI 2.0, 4x USB 3.2 (Type-A; Gen 1; downstream), 1x USB 3.2 ...
1x USB 3.2 (Type-C; upstream; 90W; DP Alt Mode), 4x USB 3.2 (Type-A; Gen 1; downstream), 2x HDMI 2.0, 1x 3.5 mm Audio Out (line-out for speakers), 1x DisplayPort 1.4, 1x Ethernet RJ45, 1x USB 3.2 (Type-B; Gen 1; upstream), 1x USB 3.2 (Type-C; downstream)
1x USB 3.2 (Type-C; Gen 2; 10 Gbps upstream; 90W; Dp Alt Mode), 1x USB 3.2 (Type-C; Gen 2; upstream), 1x HDMI 1.4, 1x DisplayPort 1.4 (DSC), 1x DisplayPort 1.4 (out with MST), 1x Ethernet RJ45 (MAC Address pass-through; PXE Boot; Wake-on-LAN), 4x USB 3...

Construction

Adjustment | Height
120 mm / 4.7244 in
120 mm / 4.7244 in
150 mm / 5.9055 in
Adjustment | Pivot
N/A
N/A
-90° ~ 90°
Adjustment | Swivel
-30° ~ 30°
-30° ~ 30°
-30° ~ 30°
Adjustment | Tilt
-5° ~ 21°
-5° ~ 21°
-5° ~ 21°
Camera
No
No
No
Colors
Black
Black
Black and Silver
Form Factor
Curved monitor
Curved monitor
Speakers
2x 9W
2x 9W
VESA Mount
100 x 100 mm
100 x 100 mm
100 x 100 mm

Dimensions

Bezels
98.38% screen-to-body ratio
93.61% screen-to-body ratio
Size | Depth
9.76 in / 248 mm w/ stand
4.03 in / 102.4 mm w/o stand, 9.89 in / 251.2 mm w/ stand
2.09 in / 53 mm w/o stand, 9.06 in / 230 mm w/ stand
Size | Height
18.02 in / 457.8 mm w/ stand
15.44 in / 392.3 mm w/o stand, 17.47 in / 443.8 mm w/ stand
16.48 in / 418.6 mm w/o stand, 18.61 in / 472.7 mm w/ stand
Size | Width
37.27 in / 946.6 mm
35.21 in / 894.3 mm
25.82 in / 655.9 mm
Weight
9.5 kg / 21 lbs w/ stand
8.8 kg / 19 lbs w/o stand , 13.6 kg / 30 lbs w/ stand
6.48 kg / 14 lbs w/o stand , 11.13 kg / 24 lbs w/ stand

Display

Aspect Ratio
21:9
24:10
16:10
Brightness
300 nits
300 nits
350 nits
Contrast Ratio
1000:1 (static)
1000:1 (static)
1000:1 (static), 2000000:1 (dynamic)
Display Backlight
W-LED
W-LED
W-LED
Display Color Depth
10 bits, 1073741824 colors
10 bits, 1073741824 colors
10 bits, 1073741824 colors
Display Curvature
2500R
2300R
Display Diagonal
40"
38" (37.52 in / 952.9 mm)
30" (29.77 in / 756.2 mm)
Display Type
IPS, Anti-glare/Matte (3H)
IPS, Anti-glare/Matte (3H)
IPS, Anti-glare/Matte (3H)
Gamut
98% DCI-P3, 100% sRGB
95% DCI-P3, 100% sRGB
95% DCI-P3, 100% sRGB
Pixel Density
109 ppi
101 ppi
Pixel Pitch
0.229 mm
0.251 mm
Refresh Rate
60 Hz
56 Hz ~ 76 Hz
56 Hz ~ 76 Hz
Resolution
5K2K WUHD (5120x2160)
UW4K (3840x1600)
WQXGA (2560x1600)
Response Time
5 ms (min) / 8 ms (avg)
5 ms (min) / 8 ms (avg)
5 ms (min) / 8 ms (avg)
Viewing Angle
178° H / 178° V
178° H / 178° V
178° H / 178° V

Function

HDR
DisplayHDR 600
Licenses
ENERGY STAR 8.0, EPEAT Gold, RoHS, TAA Availability, TCO Certified Displays
Energy Star, EPEAT Gold, RoHS, TCO Certified, TCO Edge, TUV Rheinland Low Blue Light Certified (Hardware Solution)
Operating Humidity
10 % ~ 80 %
10 % ~ 80 %
10 % ~ 80 %
Operating Temperature
0 °C ~ 40 °C , 32 °F ~ 104 °F
0 °C ~ 40 °C , 32 °F ~ 104 °F
0 °C ~ 40 °C , 32 °F ~ 104 °F
Video
KVM Switch, Low Blue Light, Picture-in-Picture, Picture-by-Picture, ComfortView Plus, Flicker-free technology
Low Blue Light, Picture-by-Picture, Picture-in-Picture, Flicker-free technology, KVM Switch
Display Stream Compression (DSC), Flicker-free technology, Low Blue Light, Picture-in-Picture, Picture-by-Picture, KVM Switch, ComfortView Plus, Dell Display Manager (DDM) Compatibility

Performance

Power Consumption
51.5 W (average) / 240 W (max) / 0.5 W (sleep)
36.5 W (average) / 230 W (max) / 0.3 W (sleep) / 0.3 W (off)
26.6 W (average) / 210 W (max) / 0.3 W (sleep) / 0.2 W (off)

Production

Accessory
DisplayPort cable, HDMI cable, Thunderbolt 4 (USB-C) Active Cable, USB Type-A to Type-B cable
DisplayPort cable, HDMI cable, USB Type-C cable, USB Type-B 3.2 Gen 1 cable
DisplayPort cable, USB Gen 2 Type-A to Type-C cable, USB Gen 2 Type-C PD 3.0 cable
Debut
2021
2021
2022

Reviews

Neofiliac score
77%
90%
83%
Pros
  • Ultra-wide form factor
  • 2500 curvature
  • Rich color reproduction
  • Stand with tilt, swivel, and height adjustments
  • High 1000:1 contrast ratio
  • 10-bit display panel
  • Build-in speakers included
  • DisplayHDR 600
  • Ultra-wide form factor
  • 2300 curvature
  • Rich color reproduction
  • Stand with tilt, swivel, and height adjustments
  • High 1000:1 contrast ratio
  • 10-bit display panel
  • High 98.38 % screen-to-body ratio
  • Build-in speakers included
  • Rich color reproduction
  • Stand with tilt, swivel, pivot, and height adjustments
  • High 1000:1 contrast ratio
  • 10-bit display panel
  • High 93.61 % screen-to-body ratio
  • USB-C hub
Cons
  • No publicized HDR support
  • No publicized HDR support

Price

Offers (incl. referral links)
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