Comparison between Dell P2421DC vs Dell UltraSharp U2718Q

General Info
Model Number	Dell P2421DC	Dell UltraSharp U2718Q

Price	Check on Amazon	Check on Amazon
Type	Monitor	Monitor
Year	2020	2017
Brand	Dell	Dell
Model Number	P2421DC	UltraSharp U2718Q
Display
Screen Size Class	24" (inches)	27" (inches)
Diagonal Size	23.78 in 60.4 cm 604 mm 1.98 ft	26.96 in 68.5 cm 684.7 mm 2.25 ft
Screen Width	20.74 in 52.7 cm 526.85 mm 1.73 ft	23.49 in 59.7 cm 596.74 mm 1.96 ft
Screen Height	11.67 in 29.6 cm 296.35 mm 0.97 ft	13.21 in 33.6 cm 335.66 mm 1.1 ft
Display Manufacturer		LG Display
Display Type	IPS	IPS
Display Bit Depth	8 bits (6 bits + FRC)	10 bits (8 bits + FRC)
Frame Rate Control	Yes	Yes
Max Number of Colors	16777216	1073741824
Bits	24	30
Screen Aspect Ratio	16:9	16:9
Screen Resolution	2560 x 1440	3840 x 2160
Screen Pixel Pitch	0.206 mm	0.155 mm
Screen Pixel Density	123 ppi	163 ppi
Screen-to-Body Ratio	90.13 %	91.99 %
Backlight Source	W-LED	W-LED
DCI P3		80.7%
sRGB	99 %	99.9 %
Adobe RGB 1998		75 %
Screen Brightness	300 cd/m²	350 cd/m²
Static Screen Contrast	1000 : 1	1300 : 1
Screen Horizontal Viewing Angle	178 °	178 °
Screen Vertical Viewing Angle	178 °	178 °
Screen Input Lag		9 ms
Display Minimum Response Time	5 ms	5 ms
Display Average Response Time	8 ms	14 ms
Display Coating	Anti-glare/Matte (3H)	Anti-glare/Matte (3H)
HDR		HDR10
3D		No
Size, weight, color
Case Depth	1.68 in 4.3 cm 42.7 mm 0.14 ft	1.93 in 4.9 cm 49.1 mm 0.16 ft
Case Weight	3.77 kg 8 lbs	3.7 kg 8 lbs
Case Width with Stand	21.17 in 53.8 cm 537.8 mm 1.76 ft	24.07 in 61.1 cm 611.3 mm 2.01 ft
Case Height with Stand	14.02 in 35.6 cm 356.1 mm 1.17 ft	16.15 in 41 cm 410.2 mm 1.35 ft
Case Depth with Stand	6.54 in 16.6 cm 166 mm 0.54 ft	7.89 in 20 cm 200.3 mm 0.66 ft
Case Weight with Stand		6.23 kg 14 lbs
Case Color		Black
Hardware
Built-in Camera	No	No
Connectivity	2 x USB 3.0 (downstream) 1 x HDMI 1.4 1 x DisplayPort 1.2 (in) 1 x DisplayPort 1.2 (out) 1 x USB (Type-C; 65W) 2 x USB 2.0 (downstream)	2 x USB 3.0 (charger - 5V/2.0A) 1 x HDMI 2.0 1 x DisplayPort 1.2 (Input mini) 1 x 3.5 mm Audio Out 1 x DisplayPort 1.2 2 x USB 3.0 (downstream) 1 x USB 3.0 (upstream)
Audio
Features
Cool Features	Low Blue Light Daisy Chain Availability Flicker-free technology	DDC/CI HDCP (High-bandwidth Digital Content Protection)
Extra Features	Security lock slot
Ergonomics
Case Width	21.17 in 53.8 cm 537.8 mm 1.76 ft	24.07 in 61.1 cm 611.3 mm 2.01 ft
Case Height	12.68 in 32.2 cm 322.1 mm 1.06 ft	14.02 in 35.6 cm 356.2 mm 1.17 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	130 mm 13 cm 5.1181 in 0.4265 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	45 °	45 °
Right Swivel	45 °	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 USB Type-C cable	DisplayPort cable - mini-DP to DP USB 3.0 upstream cable
Certificates and Standards
Licenses	ENERGY STAR EPEAT RoHS TCO Certified Display	CECP ENERGY STAR Epeat Gold RoHS compliant 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 % - 90 %	10 % - 80 %
Internal Storage Temperature	-20 °C - 60 °C -4 °F - 140 °F	-20 °C - 60 °C -4 °F - 140 °F
Internal Storage Humidity	10 % - 90 %	5 % - 90 %
Max Operating Altitude	5000	5000
Max Storage Altitude	12192	12192

Dell P2421DC

Dell UltraSharp U2718Q