Comparison between ViewSonic VX2771-4K-HD vs Dell U2520D

General Info
Model Number	ViewSonic VX2771-4K-HD	Dell U2520D

Price	Check on Amazon	Check on Amazon
Type	Monitor	Monitor
Year	2021	2020
Brand	ViewSonic	Dell
Model Series		UltraSharp
Model Number	VX2771-4K-HD	U2520D
Alias		UltraSharp U2520D
Display
Screen Size Class	27" (inches)	25" (inches)
Diagonal Size	27 in 68.6 cm 685.9 mm 2.25 ft	24.98 in 63.4 cm 634.4 mm 2.08 ft
Screen Width	23.49 in 59.7 cm 596.74 mm 1.96 ft	21.77 in 55.3 cm 552.96 mm 1.81 ft
Screen Height	13.21 in 33.6 cm 335.66 mm 1.1 ft	12.25 in 31.1 cm 311.04 mm 1.02 ft
Display Type	IPS	IPS
Display Bit Depth	10 bits (8 bits + FRC)	8 bits
Frame Rate Control	Yes	No
Max Number of Colors	1073741824	16777216
Bits	30	24
Screen Aspect Ratio	16:9	16:9
Screen Resolution	3840 x 2160	2560 x 1440
Screen Pixel Pitch	0.155 mm	0.216 mm
Screen Pixel Density	163 ppi	117 ppi
Screen-to-Body Ratio	89.21 %	91.23 %
Backlight Source	W-LED	W-LED
DCI P3		95%
sRGB	99 %	99 %
NTSC 1953	75 %
Screen Brightness	350 cd/m²	350 cd/m²
Static Screen Contrast	1000 : 1	1000 : 1
Dynamic Screen Contrast	80000000 : 1
Screen Horizontal Viewing Angle	178 °	178 °
Screen Vertical Viewing Angle	178 °	178 °
Display Minimum Response Time	5 ms	5 ms
Display Average Response Time		8 ms
Display Coating	Anti-glare/Matte (3H)	Anti-glare/Matte (3H)
HDR	HDR10	DisplayHDR 400
3D	No	No
Size, weight, color
Case Depth	2 in 5.1 cm 50.8 mm 0.17 ft	1.96 in 5 cm 49.9 mm 0.16 ft
Case Weight	4.55 kg 10 lbs	4.2 kg 9 lbs
Case Width with Stand	24.17 in 61.4 cm 613.8 mm 2.01 ft	22.35 in 56.8 cm 567.7 mm 1.86 ft
Case Height with Stand	17.91 in 45.5 cm 454.9 mm 1.49 ft	15.07 in 38.3 cm 382.9 mm 1.26 ft
Case Depth with Stand	7.41 in 18.8 cm 188.2 mm 0.62 ft	7.28 in 18.5 cm 185 mm 0.61 ft
Case Weight with Stand	5.07 kg 11 lbs	6.4 kg 14 lbs
Case Color	Black	Black
Hardware
Built-in Camera	No	No
Connectivity	1 x 3.5 mm Audio Out 2 x HDMI 2.0 1 x DisplayPort 1.2	1 x USB 3.0 (Type-C; 90W; DisplayPort) 1 x USB 3.0 (Type-C; Gen 1; downstream; 15W) 1 x DisplayPort 1.4 (in) 1 x 3.5 mm Audio Out 1 x DisplayPort 1.4 (out) 1 x HDMI 2.0 (CEC) 1 x USB 3.0 (downstream; BC 1.2 charging at 2A) 2 x USB 3.0 (Type-A; downstream)
Audio
Features
Cool Features	ViewMode OSD EcoModes SuperClear IPS	Flicker-free technology Low Blue Light
Extra Features	Anti-theft stand lock slot - Kensington	Security lock slot Anti-theft stand lock slot
Ergonomics
Case Width	24.17 in 61.4 cm 613.8 mm 2.01 ft	22.35 in 56.8 cm 567.7 mm 1.86 ft
Case Height	14.4 in 36.6 cm 365.8 mm 1.2 ft	13.07 in 33.2 cm 332.1 mm 1.09 ft
Vesa Mount Support	Yes	Yes
VESA Interface Standard Size	100 x 100	100 x 100
Removable VESA Stand	Yes	Yes
Height Adjustment	No	Yes
Height Adjustment Range		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	45 °	45 °
Right Swivel	45 °	45 °
Forward and Backward Tilt Support	Yes	Yes
Forward Tilt	5 °	5 °
Backward Tilt	15 °	21 °
Frequency and Interpolation
Vertical Digital Frequency	60 Hz	60 Hz
Screen Interpolation Measurement Unit	NULL	NULL
Accessories
Extras	HDMI cable	DisplayPort cable USB Type-C to Type-C cable USB Type-C to Type-A cable
Certificates and Standards
Licenses	CCC CEL China RoHS	BFR-free CEL ENERGY STAR 6.0 EPEAT Mercury-free NFPA 99 PVC-free 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	20 % - 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	5 % - 90 %	5 % - 90 %
Max Operating Altitude	3048	5000
Max Storage Altitude	12192	12192

ViewSonic VX2771-4K-HD

Dell U2520D