Comparison between AOC U2790PQU vs Dell U2421HE

General Info
Model Number	AOC U2790PQU	Dell U2421HE

Price	Check on Amazon	Check on Amazon
Type	Monitor	Monitor
Year	2019	2020
Brand	AOC	Dell
Model Number	U2790PQU	U2421HE
Display
Screen Size Class	27" (inches)	24" (inches)
Diagonal Size	27 in 68.6 cm 685.8 mm 2.25 ft	23.81 in 60.5 cm 604.7 mm 1.98 ft
Screen Width	23.49 in 59.7 cm 596.74 mm 1.96 ft	20.75 in 52.7 cm 527.04 mm 1.73 ft
Screen Height	13.21 in 33.6 cm 335.66 mm 1.1 ft	11.67 in 29.6 cm 296.46 mm 0.97 ft
Display Manufacturer	Panda
Display Type	IPS	IPS
Display Bit Depth	10 bits (8 bits + FRC)	8 bits
Frame Rate Control	Yes
Max Number of Colors	1073741824	16777216
Bits	30	24
Screen Aspect Ratio	16:9	16:9
Screen Resolution	3840 x 2160	1920 x 1080
Screen Pixel Pitch	0.155 mm	0.275 mm
Screen Pixel Density	163 ppi	92 ppi
Screen-to-Body Ratio		92.49 %
Backlight Source	W-LED	W-LED
DCI P3		89%
sRGB	108 %	99 %
NTSC 1953	91 %
Screen Brightness	350 cd/m²	250 cd/m²
Static Screen Contrast	1000 : 1	1000 : 1
Dynamic Screen Contrast	50000000 : 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)
3D	No	No
Size, weight, color
Case Depth		1.54 in 3.9 cm 39 mm 0.13 ft
Case Weight		3.37 kg 7 lbs
Case Width with Stand	24.21 in 61.5 cm 614.9 mm 2.02 ft	21.2 in 53.9 cm 538.5 mm 1.77 ft
Case Height with Stand	21.06 in 53.5 cm 535 mm 1.76 ft	13.72 in 34.8 cm 348.4 mm 1.14 ft
Case Depth with Stand	7.85 in 20 cm 199.5 mm 0.65 ft	6.5 in 16.5 cm 165 mm 0.54 ft
Case Weight with Stand	6.5 kg 14 lbs	5.32 kg 12 lbs
Case Color	Black, Gray	Black
Hardware
Built-in Camera	No	No
Connectivity	2 x HDMI 3.0 2 x DisplayPort 3.0 1 x 3.5 mm Audio Out 2.0 2 x USB 3.0 1 x HDMI 1.4	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)
Audio
Audio Speakers	2 x 2W
Features
Cool Features	Low Blue Light Flicker-free technology HDCP (High-bandwidth Digital Content Protection)	Flicker-free technology Low Blue Light
Extra Features	Anti-theft stand lock slot - Kensington	Security lock slot
Ergonomics
Case Width		21.2 in 53.9 cm 538.5 mm 1.77 ft
Case Height		12.35 in 31.4 cm 313.7 mm 1.03 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	0 °	90 °
Right Pivot	90 °	90 °
Left or Right Swivel Support	Yes	Yes
Left Swivel	45 °	40 °
Right Swivel	45 °	40 °
Forward and Backward Tilt Support	Yes	Yes
Forward Tilt	3.5 °	5 °
Backward Tilt	21.5 °	21 °
Frequency and Interpolation
Vertical Digital Frequency	60 Hz	56 Hz - 76 Hz
Horizontal Digital Frequency		30 kHz - 83 kHz
Screen Interpolation Measurement Unit		NULL
Accessories
Extras	HDMI cable USB 3.0 cable DisplayPort cable CD with drivers/manuals	DisplayPort cable USB Type-C to Type-C cable
Certificates and Standards
Licenses	CCC CE EAC ENERGY STAR 7.0 RoHS TCO Certified Displays 7.0	ENERGY STAR EPEAT TCO Certified RoHS NFPA 99
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 % - 85 %	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	3657.6	5000
Max Storage Altitude	12192	12192

AOC U2790PQU

Dell U2421HE