Comparison between Dell U2721DE vs ViewSonic VP2785-4K

General Info
Model Number	Dell U2721DE	ViewSonic VP2785-4K

Price	Check on Amazon	Check on Amazon
Type	Monitor	Monitor
Year	2020	2017
Brand	Dell	ViewSonic
Model Number	U2721DE	VP2785-4K
Display
Screen Size Class	27" (inches)	27" (inches)
Diagonal Size	26.96 in 68.5 cm 684.7 mm 2.25 ft	27 in 68.6 cm 685.9 mm 2.25 ft
Screen Width	23.49 in 59.7 cm 596.736 mm 1.96 ft	23.49 in 59.7 cm 596.74 mm 1.96 ft
Screen Height	13.22 in 33.6 cm 335.664 mm 1.1 ft	13.21 in 33.6 cm 335.66 mm 1.1 ft
Display Manufacturer		LG Display
Display Type	IPS	AH-IPS
Display Bit Depth	8 bits	10 bits (8 bits + FRC)
Frame Rate Control		Yes
Lut		3D LUT 14 bits
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	0.233 mm	0.155 mm
Screen Pixel Density	109 ppi	163 ppi
Screen-to-Body Ratio	92.16 %	90.18 %
Backlight Source	W-LED	W-LED
DCI P3	89%	96.4%
sRGB	99 %	100 %
Adobe RGB 1998		99 %
NTSC 1953		75.06 %
Screen Brightness	350 cd/m²	350 cd/m²
Static Screen Contrast	1000 : 1	1000 : 1
Dynamic Screen Contrast		20000000 : 1
Screen Horizontal Viewing Angle	178 °	178 °
Screen Vertical Viewing Angle	178 °	178 °
Screen Input Lag		30 ms
Display Minimum Response Time	5 ms	7 ms
Display Average Response Time	8 ms	14 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	2.27 in 5.8 cm 57.58 mm 0.19 ft
Case Weight	4.19 kg 9 lbs	3.92 kg 9 lbs
Case Width with Stand	24.1 in 61.2 cm 612.2 mm 2.01 ft	24.11 in 61.2 cm 612.4 mm 2.01 ft
Case Height with Stand	15.36 in 39 cm 390.2 mm 1.28 ft	21.48 in 54.6 cm 545.51 mm 1.79 ft
Case Depth with Stand	7.09 in 18 cm 180 mm 0.59 ft	8.46 in 21.5 cm 214.96 mm 0.71 ft
Case Weight with Stand	6.24 kg 14 lbs	6.4 kg 14 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 USB 3.1 (Type-C) 2 x HDMI 2.0 1 x DisplayPort 1.4 (Input mini) 1 x 3.5 mm Audio Out 1 x DisplayPort 1.4 3 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) Light sensor Picture-in-Picture Picture-by-Picture EcoModes Hardware calibration ready
Extra Features	Security lock slot	Anti-theft stand lock slot - Kensington
Ergonomics
Case Width	24.1 in 61.2 cm 612.2 mm 2.01 ft	24.11 in 61.2 cm 612.4 mm 2.01 ft
Case Height	13.98 in 35.5 cm 355 mm 1.16 ft	14.28 in 36.3 cm 362.7 mm 1.19 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 °	0 °
Right Pivot	90 °	90 °
Left or Right Swivel Support	Yes	Yes
Left Swivel	40 °	60 °
Right Swivel	40 °	60 °
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	60 Hz
Horizontal Digital Frequency	30 kHz - 90 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	CB CE CCC EAC / CU ENERGY STAR ErP FCC class B ICES-003 RoHS2 TCO Certified Displays WEEE
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 % - 90 %
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	3048
Max Storage Altitude	12192	12192

Dell U2721DE

ViewSonic VP2785-4K