Comparison between Dell U2421HE vs Dell UltraSharp UP2718Q

General Info
Model Number	Dell U2421HE	Dell UltraSharp UP2718Q

Price	Check on Amazon	Check on Amazon
Type	Monitor	Monitor
Year	2020	2017
Brand	Dell	Dell
Model Number	U2421HE	UltraSharp UP2718Q
Display
Screen Size Class	24" (inches)	27" (inches)
Diagonal Size	23.81 in 60.5 cm 604.7 mm 1.98 ft	26.96 in 68.5 cm 684.7 mm 2.25 ft
Screen Width	20.75 in 52.7 cm 527.04 mm 1.73 ft	23.47 in 59.6 cm 596.16 mm 1.96 ft
Screen Height	11.67 in 29.6 cm 296.46 mm 0.97 ft	13.2 in 33.5 cm 335.34 mm 1.1 ft
Display Manufacturer		LG Display
Display Type	IPS	IPS
Display Bit Depth	8 bits	10 bits
Frame Rate Control		No
Lut		3D LUT 14 bits
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	0.155 mm
Screen Pixel Density	92 ppi	163 ppi
Screen-to-Body Ratio	92.49 %	86.47 %
Backlight Source	W-LED	GB-r LED
DCI P3	89%	97.7%
Rec.2020		76.9
sRGB	99 %	100 %
Adobe RGB 1998		100 %
Screen Brightness	250 cd/m²	400 cd/m²
Max Screen Brightness		1000 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	6 ms
Display Average Response Time	8 ms	8 ms
Display Maximum Response Time		13 ms
Display Coating	Anti-glare/Matte (3H)	Anti-glare/Matte (3H)
HDR		HDR10
3D	No	No
Size, weight, color
Case Depth	1.54 in 3.9 cm 39 mm 0.13 ft	2.54 in 6.4 cm 64.4 mm 0.21 ft
Case Weight	3.37 kg 7 lbs	5.98 kg 13 lbs
Case Width with Stand	21.2 in 53.9 cm 538.5 mm 1.77 ft	24.66 in 62.6 cm 626.4 mm 2.06 ft
Case Height with Stand	13.72 in 34.8 cm 348.4 mm 1.14 ft	15.85 in 40.3 cm 402.6 mm 1.32 ft
Case Depth with Stand	6.5 in 16.5 cm 165 mm 0.54 ft	7.89 in 20 cm 200.3 mm 0.66 ft
Case Weight with Stand	5.32 kg 12 lbs	8.4 kg 18 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)	2 x USB 3.0 (upstream) 2 x HDMI 2.0 1 x DisplayPort 1.4 (Input mini) 1 x 3.5 mm Audio Out 1 x DisplayPort 1.4 2 x USB 3.0 (charger - 5V/2.0A) 2 x USB 3.0 (downstream)
Audio
Features
Cool Features	Flicker-free technology Low Blue Light	Picture-by-Picture Picture-in-Picture DDC/CI HDCP (High-bandwidth Digital Content Protection) 2.2
Extra Features	Security lock slot
Ergonomics
Case Width	21.2 in 53.9 cm 538.5 mm 1.77 ft	24.66 in 62.6 cm 626.4 mm 2.06 ft
Case Height	12.35 in 31.4 cm 313.7 mm 1.03 ft	14.53 in 36.9 cm 369.1 mm 1.21 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	145 mm 14.5 cm 5.7087 in 0.4757 ft
Landscape or Portrait Pivot Support	Yes	Yes
Left Pivot	90 °	0 °
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 - 75 Hz
Horizontal Digital Frequency	30 kHz - 83 kHz	30 kHz - 140 kHz
Screen Interpolation Measurement Unit	NULL
Accessories
Extras	DisplayPort cable USB Type-C to Type-C cable	DisplayPort cable - mini-DP to DP HDMI cable USB 3.0 upstream cable
Certificates and Standards
Licenses	ENERGY STAR EPEAT TCO Certified RoHS NFPA 99	CECP ENERGY STAR 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 % - 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 UltraSharp UP2718Q