Comparison between Dell U2421HE vs Dell P2815Q

General Info
Model Number	Dell U2421HE	Dell P2815Q

Price	Check on Amazon	Check on Amazon
Type	Monitor	Monitor
Year	2020	2014
Brand	Dell	Dell
Model Number	U2421HE	P2815Q
Display
Screen Size Class	24" (inches)	28" (inches)
Diagonal Size	23.81 in 60.5 cm 604.7 mm 1.98 ft	28 in 71.1 cm 711.2 mm 2.33 ft
Screen Width	20.75 in 52.7 cm 527.04 mm 1.73 ft	24.45 in 62.1 cm 620.93 mm 2.04 ft
Screen Height	11.67 in 29.6 cm 296.46 mm 0.97 ft	13.44 in 34.1 cm 341.28 mm 1.12 ft
Display Manufacturer		Innolux
Display Type	IPS	TN
Display Bit Depth	8 bits	10 bits (8 bits + FRC)
Frame Rate Control		Yes
Max Number of Colors	16777216	1073741824
Bits	24	30
Screen Aspect Ratio	16:9	16:9
Screen Resolution	1920 x 1080	3840 x 2160
Screen Pixel Pitch	0.275 mm	0.162 mm
Screen Pixel Density	92 ppi	157 ppi
Screen-to-Body Ratio	92.49 %	83.95 %
Backlight Source	W-LED	W-LED
DCI P3	89%
sRGB	99 %	97 %
Adobe RGB 1998		66 %
NTSC 1953		72 %
Screen Brightness	250 cd/m²	300 cd/m²
Static Screen Contrast	1000 : 1	1000 : 1
Screen Horizontal Viewing Angle	178 °	170 °
Screen Vertical Viewing Angle	178 °	160 °
Screen Input Lag		120 ms
Display Minimum Response Time	5 ms	5 ms
Display Average Response Time	8 ms	18 ms
Display Maximum Response Time		25 ms
Display Coating	Anti-glare/Matte (3H)	Anti-glare/Matte (3H)
3D	No	No
Size, weight, color
Case Depth	1.54 in 3.9 cm 39 mm 0.13 ft	2.21 in 5.6 cm 56.2 mm 0.18 ft
Case Weight	3.37 kg 7 lbs	5.19 kg 11 lbs
Case Width with Stand	21.2 in 53.9 cm 538.5 mm 1.77 ft	26.04 in 66.1 cm 661.3 mm 2.17 ft
Case Height with Stand	13.72 in 34.8 cm 348.4 mm 1.14 ft	17.14 in 43.5 cm 435.3 mm 1.43 ft
Case Depth with Stand	6.5 in 16.5 cm 165 mm 0.54 ft	8.04 in 20.4 cm 204.1 mm 0.67 ft
Case Weight with Stand	5.32 kg 12 lbs	7.2 kg 16 lbs
Case Color	Black	Black
Hardware
Built-in Camera	No	No
Connectivity	1 x USB 3.1 (Type-C; upstream; DP; 65W) 1 x Ethernet RJ45 1 x DisplayPort 1.4 1 x 3.5 mm Audio Out 1 x DisplayPort 1.4 (Output MST) 1 x HDMI 1.4 2 x USB 3.0 (downstream) 2 x USB 3.0 (downstream; BC 1.2)	1 x HDMI 1.4 (MHL) 1 x DisplayPort (Output MST) 1 x DisplayPort 1.2 (Input mini) 1 x 3.5 mm Audio Out 1 x DisplayPort 1.2 4 x USB 3.0 (downstream) 1 x USB 3.0 (upstream)
Audio
Features
Cool Features	Flicker-free technology Low Blue Light	HDCP (High-bandwidth Digital Content Protection)
Extra Features	Security lock slot	Security lock slot
Ergonomics
Case Width	21.2 in 53.9 cm 538.5 mm 1.77 ft	26.04 in 66.1 cm 661.3 mm 2.17 ft
Case Height	12.35 in 31.4 cm 313.7 mm 1.03 ft	15.03 in 38.2 cm 381.7 mm 1.25 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	130 mm 13 cm 5.1181 in 0.4265 ft	115 mm 11.5 cm 4.5276 in 0.3773 ft
Landscape or Portrait Pivot Support	Yes	Yes
Left Pivot	90 °	90 °
Right Pivot	90 °	90 °
Left or Right Swivel Support	Yes	Yes
Left Swivel	40 °	45 °
Right Swivel	40 °	45 °
Forward and Backward Tilt Support	Yes	Yes
Forward Tilt	5 °	5 °
Backward Tilt	21 °	21 °
Frequency and Interpolation
Vertical Digital Frequency	56 Hz - 76 Hz	24 Hz - 85 Hz
Horizontal Digital Frequency	30 kHz - 83 kHz	31 kHz - 114 kHz
Screen Interpolation Measurement Unit	NULL
Accessories
Extras	DisplayPort cable USB Type-C to Type-C cable	DisplayPort cable - mini-DP to DP USB 3.0 upstream cable
Certificates and Standards
Licenses	ENERGY STAR EPEAT TCO Certified RoHS NFPA 99	ENERGY STAR 6.0 Epeat Gold RoHS 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 U2421HE

Dell P2815Q