Comparison between Dell UltraSharp U3818DW vs Dell P2421

General Info
Model Number	Dell UltraSharp U3818DW	Dell P2421

Price	Check on Amazon	Check on Amazon
Type	Monitor	Monitor
Year	2017	2020
Brand	Dell	Dell
Model Number	UltraSharp U3818DW	P2421
Display
Screen Size Class	38" (inches)	24" (inches)
Diagonal Size	37.5 in 95.3 cm 952.5 mm 3.13 ft	24.06 in 61.1 cm 611 mm 2 ft
Screen Width	34.63 in 88 cm 879.67 mm 2.89 ft	20.41 in 51.8 cm 518.4 mm 1.7 ft
Screen Height	14.43 in 36.7 cm 366.53 mm 1.2 ft	12.76 in 32.4 cm 324 mm 1.06 ft
Display Curvature	2300
Display Manufacturer	LG Display
Display Type	AH-IPS	IPS
Display Bit Depth	10 bits	8 bits
Frame Rate Control	No
Max Number of Colors	1073741824	16777216
Bits	30	24
Screen Aspect Ratio		16:10
Screen Resolution	3840 x 1600	1920 x 1200
Screen Pixel Pitch	0.229 mm	0.27 mm
Screen Pixel Density	111 ppi	94 ppi
Screen-to-Body Ratio	90.89 %	86.78 %
Backlight Source	W-LED	W-LED
DCI P3	78.1%
sRGB	99 %	99 %
Screen Brightness	350 cd/m²	300 cd/m²
Static Screen Contrast	1000 : 1	1000 : 1
Screen Horizontal Viewing Angle	178 °	178 °
Screen Vertical Viewing Angle	178 °	178 °
Screen Input Lag	25 ms
Display Minimum Response Time	5 ms	5 ms
Display Average Response Time	8 ms	8 ms
Display Maximum Response Time	20 ms
Display Coating	Anti-glare/Matte (3H)	Anti-glare/Matte (3H)
3D	No
Size, weight, color
Case Depth	2.19 in 5.6 cm 55.5 mm 0.18 ft	1.74 in 4.4 cm 44.1 mm 0.14 ft
Case Weight	9.05 kg 20 lbs	3.5 kg 8 lbs
Case Width with Stand	35.2 in 89.4 cm 894 mm 2.93 ft	20.91 in 53.1 cm 531 mm 1.74 ft
Case Height with Stand	17.01 in 43.2 cm 432 mm 1.42 ft	14.6 in 37.1 cm 370.8 mm 1.22 ft
Case Depth with Stand	8.91 in 22.6 cm 226.4 mm 0.74 ft	6.54 in 16.6 cm 166 mm 0.54 ft
Case Weight with Stand	12.14 kg 27 lbs
Case Color	Black
Hardware
Built-in Camera	No	No
Connectivity	2 x USB 3.0 (upstream) 2 x HDMI 2.0 1 x 3.5 mm Audio Out 1 x DisplayPort 1.2 4 x USB 3.0 (downstream) 1 x USB 3.0 (Type-C)	1 x USB 3.0 (upstream) 1 x HDMI 1.4 1 x DVI-D 1 x D-sub 1 x DisplayPort 1.2 2 x USB 2.0 (downstream) 2 x USB 3.0 (downstream)
Audio
Audio Speakers	2 x 9W
Features
Cool Features	Picture-in-Picture HDCP (High-bandwidth Digital Content Protection) Picture-by-Picture	Flicker-free technology Low Blue Light
Extra Features	Security lock slot	Security lock slot
Ergonomics
Case Width	35.2 in 89.4 cm 894 mm 2.93 ft	20.91 in 53.1 cm 531 mm 1.74 ft
Case Height	15.62 in 39.7 cm 396.8 mm 1.3 ft	14.35 in 36.5 cm 364.5 mm 1.2 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	115 mm 11.5 cm 4.5276 in 0.3773 ft	130 mm 13 cm 5.1181 in 0.4265 ft
Landscape or Portrait Pivot Support	No	Yes
Left Pivot		90 °
Right Pivot		90 °
Left or Right Swivel Support	Yes	Yes
Left Swivel	30 °	45 °
Right Swivel	30 °	45 °
Forward and Backward Tilt Support	Yes	Yes
Forward Tilt	5 °	5 °
Backward Tilt	21 °	21 °
Frequency and Interpolation
Vertical Digital Frequency	60 Hz	60 Hz
Screen Interpolation Measurement Unit		NULL
Accessories
Extras	DisplayPort cable Factory Calibration Report HDMI cable USB 3.0 upstream cable USB Type-C cable	DisplayPort cable D-Sub cable (Japan only)
Certificates and Standards
Licenses	CECP CEL ENERGY STAR RoHS Compliant TCO Certified Displays	ENERGY STAR EPEAT RoHS TCO Certified Display
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 %	20 % - 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 %	10 % - 90 %
Max Operating Altitude	5000	5000
Max Storage Altitude	12192	12192

Dell UltraSharp U3818DW

Dell P2421