Comparison between:
- 37.52" Dell U3821DW
- 37.5" Dell UltraSharp U3818DW
- 34.14" Dell U3421WE

Brand, series, model

Information about the brand, series, model and model aliases.

Dell U3821DWDell UltraSharp U3818DWDell U3421WE
SeriesUltraSharpUltraSharpUltraSharp
Dell U3821DWDell UltraSharp U3818DWDell U3421WE
Model alias--UltraSharp U3421WE
Model year202120172020

Display

Information about the main characteristics of the display - panel, backlight, resolution, refresh rate, etc.

Size class37.52 in37.5 in34.14 in
Diagonal952.9 mm
95.29 cm
37.5157 in
3.1263 ft
952.5 mm
95.25 cm
37.5 in
3.125 ft
867.2 mm
86.72 cm
34.1417 in
2.8451 ft
Width890 mm
89 cm
35.0394 in
2.9199 ft
879.67 mm
87.967 cm
34.6327 in
2.8861 ft
799.8 mm
79.98 cm
31.4882 in
2.624 ft
Height387.8 mm
38.78 cm
15.2677 in
1.2723 ft
366.53 mm
36.653 cm
14.4303 in
1.2025 ft
334.8 mm
33.48 cm
13.1811 in
1.0984 ft
Radius of curvature2300 mm
230 cm
90.5512 in
7.5459 ft
2300 mm
230 cm
90.5512 in
7.5459 ft
1900 mm
190 cm
74.8031 in
6.2336 ft
Panel manufacturer-LG DisplayLG Display
Panel model-LM375QW1-SSA1-
Panel typeIPSAH-IPSAH-IPS
Panel bit depth10 bits10 bits10 bits
Colors1073741824 colors
30 bits
1073741824 colors
30 bits
1073741824 colors
30 bits
Aspect ratio2.4:12.4:12.389:1
Resolution3840 x 1600 pixels3840 x 1600 pixels3440 x 1440 pixels
Pixel pitch0.229 mm
0.0229 cm
0.009 in
0.0008 ft
0.229 mm
0.0229 cm
0.009 in
0.0008 ft
0.233 mm
0.0233 cm
0.0092 in
0.0008 ft
Pixel density109 ppi
43 ppcm
111 ppi
43 ppcm
109 ppi
43 ppcm
Display area98.38 %90.89 %-
BacklightW-LEDW-LEDW-LED
sRGB100 %99 %99 %
DCI P395 %78.1 %95 %
Brightness300 cd/m²350 cd/m²300 cd/m²
Static contrast1000 : 11000 : 11000 : 1
Horizontal viewing angle178 °178 °178 °
Vertical viewing angle178 °178 °178 °
Minimum response time5 ms
0.0050 s
5 ms
0.0050 s
5 ms
0.0050 s
Average response time8 ms
0.0080 s
8 ms
0.0080 s
8 ms
0.0080 s
Maximum response time-20 ms
0.0200 s
-
Input lag-25 ms
0.0250 s
-
CoatingAnti-glare/Matte (3H)Anti-glare/Matte (3H)Anti-glare/Matte (3H)
-REC 709 - 99%-

3D

3D displays use various technologies to achieve a 3D effect. Each of these technologies has its own advantages and drawbacks.

3DNoNoNo

Frequencies

Information about the horizontal and vertical refresh rates/frequencies.

Horizontal frequency (digital)30 kHz - 100 kHz--
Vertical frequency (digital)56 Hz - 76 Hz60 Hz60 Hz

Power supply and consumption

Information about the power supply and consumption, energy efficiency class, etc.

110V100 V - 120 V100 V - 120 V100 V - 120 V
220V220 V - 240 V220 V - 240 V220 V - 240 V
Alternating current frequency50 Hz - 60 Hz50 Hz - 60 Hz50 Hz - 60 Hz
Electric current (A)3 A3 A3 A
Power consumption (off)0.3 W0.5 W0.5 W
Power consumption (sleep)0.3 W0.5 W0.5 W
Power consumption (average)36.5 W56 W36 W
Power consumption (maximum)230 W250 W210 W
Power consumption (annual)105.47 kWh--

Dimensions, weight and color

Information about the dimensions and the weight of the specific model with and without stand as well as the colors, in which it is offered to the market.

Width894.3 mm
89.43 cm
35.2087 in
2.9341 ft
894 mm
89.4 cm
35.1969 in
2.9331 ft
813.3 mm
81.33 cm
32.0197 in
2.6683 ft
Height392.3 mm
39.23 cm
15.4449 in
1.2871 ft
396.8 mm
39.68 cm
15.622 in
1.3018 ft
-
Depth102.4 mm
10.24 cm
4.0315 in
0.336 ft
55.5 mm
5.55 cm
2.185 in
0.1821 ft
-
Weight8.8 kg
19.4 lbs
9.05 kg
19.95 lbs
7.52 kg
16.58 lbs
Width with stand894.3 mm
89.43 cm
35.2087 in
2.9341 ft
894 mm
89.4 cm
35.1969 in
2.9331 ft
813.3 mm
81.33 cm
32.0197 in
2.6683 ft
Height with stand443.8 mm
44.38 cm
17.4724 in
1.456 ft
432 mm
43.2 cm
17.0079 in
1.4173 ft
392.8 mm
39.28 cm
15.4646 in
1.2887 ft
Depth with stand251.2 mm
25.12 cm
9.8898 in
0.8241 ft
226.4 mm
22.64 cm
8.9134 in
0.7428 ft
237.4 mm
23.74 cm
9.3465 in
0.7789 ft
Weight with stand13.6 kg
29.98 lbs
12.11 kg
26.7 lbs
11.87 kg
26.17 lbs
Box weight19.9 kg
43.87 lbs
19.7 kg
43.43 lbs
16.62 kg
36.64 lbs
Stand width385 mm
38.5 cm
15.1575 in
1.2631 ft
--
Stand height318.3 mm
31.83 cm
12.5315 in
1.0443 ft
--
Stand depth251.2 mm
25.12 cm
9.8898 in
0.8241 ft
--
ColorsBlackBlackPlatinum Silver

Ergonomics

Information about the ergonomic functions - height adjustment, swivel angles, tilt angles, etc.

VESA mountYesYesYes
VESA interface100 x 100 mm-100 x 100 mm
Removable standYesYesYes
Height adjustmentYesYesYes
Height adjustment range120 mm
12 cm
4.7244 in
0.3937 ft
115 mm
11.5 cm
4.5276 in
0.3773 ft
150 mm
15 cm
5.9055 in
0.4921 ft
Landscape/portrait pivotNoNoNo
Left/right swivelYesYesYes
Left swivel30 °30 °30 °
Right swivel30 °30 °30 °
Forward/backward tiltYesYesYes
Forward tilt5 °5 °5 °
Backward tilt21 °21 °21 °

Audio

Information about the audio system - number and power of the built-in speakers, supported audio technologies.

Speakers2 x 9 W2 x 9 W2 x 5 W

Camera

Many contemporary desktop monitors and smart TV sets have built-in cameras.

CameraNoNoNo

Connectivity

Available connectivity ports, slots and interfaces.

Connectivity1 x USB 3.2 (Type-B; Gen 1; upstream)
1 x USB 3.2 (Type-C; downstream)
1 x USB 3.2 (Type-C; upstream; 90W; DP Alt Mode)
4 x USB 3.2 (Type-A; Gen 1; downstream)
1 x Ethernet RJ45
2 x HDMI 2.0
1 x DisplayPort 1.4
1 x 3.5 mm Audio Out (line-out for speakers)
4 x USB 3.0 (downstream)
1 x USB 3.0 (Type-C)
2 x USB 3.0 (upstream)
2 x HDMI 2.0
1 x DisplayPort 1.2
1 x 3.5 mm Audio Out
1 x USB 3.1 (Type-C; upstream; 90W; DP Alt Mode)
1 x USB 3.1 (Type-C; downstream; 15W)
4 x USB 3.2 (Type-A; Gen 1; downstream; 5 Gbps)
1 x USB 3.2 (Type-B; Gen 1; upstream)
1 x Ethernet RJ45
2 x HDMI 2.0
1 x DisplayPort 1.4
1 x 3.5 mm Audio Out
High-bandwidth Digital Content Protection (HDCP)High-bandwidth Digital Content Protection (HDCP)High-bandwidth Digital Content Protection (HDCP)

Features

Some additional functional features of the model.

FeaturesFlicker-free technology
KVM Switch
Low Blue Light
Picture-by-Picture
Picture-in-Picture
Picture-by-Picture
Picture-in-Picture
ComfortView
Flicker-free technology
KVM Switch
Low Blue Light
Picture-by-Picture
Picture-in-Picture

Certificates, standards and licenses

Licenses from regulatory agencies, standards, certificates.

Certificates, standards and licensesENERGY STAR 8.0
EPEAT Gold
RoHS
TAA Availability
TCO Certified Displays
CECP
CEL
ENERGY STAR
RoHS Compliant
TCO Certified Displays
Energy Star
EPEAT Gold
RoHS
TCO Certified Displays
TUV Rheinland Flicker Free Certified
TUV Rheinland Low Blue Light Certified

Operating and storage conditions

There are certain requirements for the environmental conditions, in which the display should be used and stored in order to function properly.

Operating temperature0 °C - 40 °C
32 °F - 104 °F
0 °C - 40 °C
32 °F - 104 °F
0 °C - 40 °C
32 °F - 104 °F
Operating humidity10 % - 80 %10 % - 80 %10 % - 80 %
Operating altitude5000 m
16404.2 ft
5000 m
16404.2 ft
5000 m
16404.2 ft
Storage temperature-20 °C - 60 °C
-4 °F - 140 °F
-20 °C - 60 °C
-4 °F - 140 °F
-20 °C - 60 °C
-4 °F - 140 °F
Storage humidity5 % - 90 %5 % - 90 %5 % - 90 %
Storage altitude12192 m
40000 ft
12192 m
40000 ft
12192 m
40000 ft

Accessories

Often the packaging of desktop monitors and smart TV sets includes accessories for them.

AccessoriesDisplayPort cable
HDMI cable
USB Type-C cable
USB Type-B 3.2 Gen 1 cable
DisplayPort cable
Factory Calibration Report
HDMI cable
USB 3.0 upstream cable
USB Type-C cable
DisplayPort cable
HDMI cable
USB Type-A to Type-B cable
USB Type-C to Type-C cable

Additional features

Information about other features.

Additional featuresSecurity lock slotSecurity lock slotSecurity lock slot
 Dell U3821DWDell UltraSharp U3818DWDell U3421WE