Comparison between Dell P3421W vs Dell U3821DW

General Info
Model Number	Dell P3421W	Dell U3821DW

Price	Check on Amazon	Check on Amazon
Type	Monitor	Monitor
Year	2020	2021
Brand	Dell	Dell
Model Series		UltraSharp
Model Number	P3421W	U3821DW
Display
Screen Size Class	34" (inches)	38" (inches)
Diagonal Size	34.14 in 86.7 cm 867.2 mm 2.85 ft	37.52 in 95.3 cm 952.9 mm 3.13 ft
Screen Width	31.49 in 80 cm 799.8 mm 2.62 ft	35.04 in 89 cm 890 mm 2.92 ft
Screen Height	13.18 in 33.5 cm 334.8 mm 1.1 ft	15.27 in 38.8 cm 387.8 mm 1.27 ft
Display Curvature	3800	2300
Display Manufacturer	LG Display
Display Type	IPS	IPS
Display Bit Depth	10 bits	10 bits
Max Number of Colors	1073741824	1073741824
Bits	30	30
Screen Aspect Ratio	21:9	24:10
Screen Resolution	3440 x 1440	3840 x 1600
Screen Pixel Pitch	0.233 mm	0.229 mm
Screen Pixel Density	109 ppi	109 ppi
Screen-to-Body Ratio		98.38 %
Backlight Source	W-LED	W-LED
DCI P3		95%
sRGB	99 %	100 %
Screen Brightness	300 cd/m²	300 cd/m²
Static Screen Contrast	1000 : 1	1000 : 1
Screen Horizontal Viewing Angle	178 °	178 °
Screen Vertical Viewing Angle	178 °	178 °
Display Minimum Response Time	5 ms	5 ms
Display Average Response Time	8 ms	8 ms
Display Coating	Anti-glare/Matte (3H)	Anti-glare/Matte (3H)
HDR		DisplayHDR 600
3D	No	No
Size, weight, color
Case Depth		4.03 in 10.2 cm 102.4 mm 0.34 ft
Case Weight	6.7 kg 15 lbs	8.8 kg 19 lbs
Case Width with Stand	32.11 in 81.6 cm 815.7 mm 2.68 ft	35.21 in 89.4 cm 894.3 mm 2.93 ft
Case Height with Stand	15.4 in 39.1 cm 391.1 mm 1.28 ft	17.47 in 44.4 cm 443.8 mm 1.46 ft
Case Depth with Stand	9.35 in 23.7 cm 237.4 mm 0.78 ft	9.89 in 25.1 cm 251.2 mm 0.82 ft
Case Weight with Stand		13.6 kg 30 lbs
Case Color	Black and Silver	Black
Hardware
Built-in Camera	No	No
Connectivity	2 x USB 3.2 (Type-A; Gen 1; downstream; 5 Gbps) 1 x USB 3.2 (Type-B; Gen 1; upstream) 1 x DisplayPort 1.2 1 x HDMI 2.0 2 x USB 2.0 (Type-A; downstream) 1 x USB 3.1 (Type-C; upstream; 65W; DP Alt Mode)	1 x USB 3.2 (Type-C; upstream; 90W; DP Alt Mode) 4 x USB 3.2 (Type-A; Gen 1; downstream) 2 x HDMI 2.0 1 x 3.5 mm Audio Out (line-out for speakers) 1 x DisplayPort 1.4 1 x Ethernet RJ45 1 x USB 3.2 (Type-B; Gen 1; upstream) 1 x USB 3.2 (Type-C; downstream)
Audio
Audio Speakers	2 x 5W	2 x 9W
Features
Cool Features	KVM Switch Low Blue Light Picture-in-Picture Picture-by-Picture ComfortView Flicker-free technology	Low Blue Light Picture-by-Picture Picture-in-Picture Flicker-free technology KVM Switch
Extra Features	Security lock slot	Security lock slot
Ergonomics
Case Width	32.11 in 81.6 cm 815.7 mm 2.68 ft	35.21 in 89.4 cm 894.3 mm 2.93 ft
Case Height		15.44 in 39.2 cm 392.3 mm 1.29 ft
Vesa Mount Support	Yes	Yes
VESA Interface Standard Size	100 x 100	100 x 100
Removable VESA Stand	Yes	Yes
Height Adjustment	Yes	Yes
Height Adjustment Range	150 mm 15 cm 5.9055 in 0.4921 ft	120 mm 12 cm 4.7244 in 0.3937 ft
Landscape or Portrait Pivot Support	Yes	No
Left Pivot	4 °
Right Pivot	4 °
Left or Right Swivel Support	Yes	Yes
Left Swivel	30 °	30 °
Right Swivel	30 °	30 °
Forward and Backward Tilt Support	Yes	Yes
Forward Tilt	5 °	5 °
Backward Tilt	21 °	21 °
Frequency and Interpolation
Vertical Digital Frequency	60 Hz	56 Hz - 76 Hz
Horizontal Digital Frequency		30 kHz - 100 kHz
Screen Interpolation Measurement Unit	NULL	NULL
Accessories
Extras	DisplayPort cable HDMI cable USB Type-A to Type-B cable USB Type-C to Type-C cable	DisplayPort cable HDMI cable USB Type-C cable USB Type-B 3.2 Gen 1 cable
Certificates and Standards
Licenses	Energy Star EPEAT RoHS TCO Certified Displays TUV Rheinland Flicker Free Certified TUV Rheinland Low Blue Light Certified	ENERGY STAR 8.0 EPEAT Gold RoHS TAA Availability TCO Certified Displays
Usage and Storage Requirements
Safe Operating Temperature Level	0 °C - 40 °C 32 °F - 104 °F	0 °C - 40 °C 32 °F - 104 °F
Safe Operating Humidity Level	10 % - 80 %	10 % - 80 %
Internal Storage Temperature	-20 °C - 60 °C -4 °F - 140 °F	-20 °C - 60 °C -4 °F - 140 °F
Internal Storage Humidity	5 % - 90 %	5 % - 90 %
Max Operating Altitude	5000	5000
Max Storage Altitude	12192	12192

Dell P3421W

Dell U3821DW