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Compare UltraSharp U3821DW vs Lenovo ThinkVision P40w-20 vs Dell UltraSharp U4021QW

Connectivity

Ports
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 1; upstream; 27W), 1x Ethernet RJ45 (Gigabit), 1x DisplayPort 1.4, 1x Thunderbolt 4.0 (Type-C; upstream; 100W; DP Alt Mode), 1x Thunderbolt 4.0, 1x HDMI 2.0, 4x USB 3.2 (Type-A; Gen 1; downstream), 1x 3.5 mm Audio Out (line-out ...
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 ...

Construction

Adjustment | Height
120 mm / 4.7244 in
130 mm / 5.1181 in
120 mm / 4.7244 in
Adjustment | Pivot
N/A
N/A
N/A
Adjustment | Swivel
-30° ~ 30°
-45° ~ 45°
-30° ~ 30°
Adjustment | Tilt
-5° ~ 21°
-5° ~ 22°
-5° ~ 21°
Camera
No
No
No
Colors
Black
Raven Black
Black
Form Factor
Curved monitor
Curved monitor
Curved monitor
Speakers
2x 9W
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
89.68% screen-to-body ratio
Size | Depth
4.03 in / 102.4 mm w/o stand, 9.89 in / 251.2 mm w/ stand
3.97 in / 100.8 mm w/o stand, 11 in / 279.4 mm w/ stand
9.76 in / 248 mm w/ stand
Size | Height
15.44 in / 392.3 mm w/o stand, 17.47 in / 443.8 mm w/ stand
16.88 in / 428.7 mm w/o stand, 20.13 in / 511.2 mm w/ stand
18.02 in / 457.8 mm w/ stand
Size | Width
35.21 in / 894.3 mm
37.31 in / 947.6 mm
37.27 in / 946.6 mm
Weight
8.8 kg / 19 lbs w/o stand , 13.6 kg / 30 lbs w/ stand
9.95 kg / 22 lbs w/o stand , 14.65 kg / 32 lbs w/ stand
9.5 kg / 21 lbs w/ stand

Display

Aspect Ratio
24:10
21:9
21:9
Brightness
300 nits
300 nits
300 nits
Contrast Ratio
1000:1 (static)
1000:1 (static), 3000000:1 (dynamic)
1000:1 (static)
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
2300R
2500R
2500R
Display Diagonal
38" (37.52 in / 952.9 mm)
40" (39.71 in / 1008.59 mm)
40"
Display Type
IPS, Anti-glare/Matte (3H)
IPS, Anti-glare/Matte (3H)
IPS, Anti-glare/Matte (3H)
Gamut
95% DCI-P3, 100% sRGB
98% DCI-P3, 99% sRGB
98% DCI-P3, 100% sRGB
Pixel Density
109 ppi
140 ppi
Pixel Pitch
0.229 mm
0.182 mm
Refresh Rate
56 Hz ~ 76 Hz
48 Hz ~ 75 Hz
60 Hz
Resolution
UW4K (3840x1600)
5K2K WUHD (5120x2160)
5K2K WUHD (5120x2160)
Response Time
5 ms (min) / 8 ms (avg)
4 ms (min) / 6 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
CCC, China Energy Efficiency Standard Tier 2, EnergyStar 8.0, EPEAT Silver, TCO Certified Displays 8.0, TCO Edge 2.0, TÜV Rheinland Eyesafe Display Certification, Windows Certification (Windows 10)
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
Low Blue Light, Picture-by-Picture, Picture-in-Picture, Flicker-free technology, KVM Switch
Flicker-free technology, Natural Low Blue Light technology, Picture-in-Picture, True Split technology, Picture-by-Picture, 3-side NearEdgeless Design, eKVM switch
KVM Switch, Low Blue Light, Picture-in-Picture, Picture-by-Picture, ComfortView Plus, Flicker-free technology

Performance

Power Consumption
36.5 W (average) / 230 W (max) / 0.3 W (sleep) / 0.3 W (off)
60 W (average) / 250 W (max) / 0.5 W (sleep) / 0.3 W (off)
51.5 W (average) / 240 W (max) / 0.5 W (sleep)

Production

Accessory
DisplayPort cable, HDMI cable, USB Type-C cable, USB Type-B 3.2 Gen 1 cable
Thunderbolt 4 cabke (40 Gbps)
DisplayPort cable, HDMI cable, Thunderbolt 4 (USB-C) Active Cable, USB Type-A to Type-B cable
Debut
2021
2021
2021

Reviews

Neofiliac score
90%
77%
77%
Pros
  • 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
  • Ultra-wide form factor
  • 2500R curvature
  • Rich color reproduction
  • Stand with tilt, swivel, and height adjustments
  • High 1000:1 contrast ratio
  • 10-bit display panel
  • Build-in speakers included
  • 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
Cons
  • No publicized HDR support
  • No publicized HDR support

Price

Offers (incl. referral links)
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