Comparison between BenQ EW2755ZH vs Dell P2421

General Info
Model Number	BenQ EW2755ZH	Dell P2421

Price	Check on Amazon	Check on Amazon
Type	Monitor	Monitor
Year	2015	2020
Brand	BenQ	Dell
Model Number	EW2755ZH	P2421
Display
Screen Size Class	27" (inches)	24" (inches)
Diagonal Size	26.96 in 68.5 cm 684.7 mm 2.25 ft	24.06 in 61.1 cm 611 mm 2 ft
Screen Width	23.53 in 59.8 cm 597.6 mm 1.96 ft	20.41 in 51.8 cm 518.4 mm 1.7 ft
Screen Height	13.23 in 33.6 cm 336.15 mm 1.1 ft	12.76 in 32.4 cm 324 mm 1.06 ft
Display Manufacturer	AU Optronics
Display Type	AMVA+ (Е2Е)	IPS
Display Bit Depth	8 bits	8 bits
Frame Rate Control	No
Max Number of Colors	16777216	16777216
Bits	24	24
Screen Aspect Ratio	16:9	16:10
Screen Resolution	1920 x 1080	1920 x 1200
Screen Pixel Pitch	0.311 mm	0.27 mm
Screen Pixel Density	81 ppi	94 ppi
Screen-to-Body Ratio		86.78 %
Backlight Source	W-LED	W-LED
sRGB		99 %
NTSC 1953	72 %
Screen Brightness	300 cd/m²	300 cd/m²
Static Screen Contrast	3000 : 1	1000 : 1
Dynamic Screen Contrast	20000000 : 1
Screen Horizontal Viewing Angle	178 °	178 °
Screen Vertical Viewing Angle	178 °	178 °
Display Minimum Response Time	4 ms	5 ms
Display Average Response Time	12 ms	8 ms
Display Coating	Anti-glare/Matte	Anti-glare/Matte (3H)
3D	No
Size, weight, color
Case Depth		1.74 in 4.4 cm 44.1 mm 0.14 ft
Case Weight		3.5 kg 8 lbs
Case Width with Stand	24.17 in 61.4 cm 613.8 mm 2.01 ft	20.91 in 53.1 cm 531 mm 1.74 ft
Case Height with Stand	18.05 in 45.9 cm 458.5 mm 1.5 ft	14.6 in 37.1 cm 370.8 mm 1.22 ft
Case Depth with Stand	7.67 in 19.5 cm 194.9 mm 0.64 ft	6.54 in 16.6 cm 166 mm 0.54 ft
Case Weight with Stand	4.3 kg 9 lbs
Case Color	Black
Hardware
Built-in Camera	No	No
Connectivity	1 x D-sub 1 x 3.5 mm Audio In 1 x 3.5 mm Audio Out 1 x HDMI 1.4 1 x HDMI 1.4 (MHL)	1 x USB 3.0 (upstream) 1 x HDMI 1.4 1 x DVI-D 1 x D-sub 1 x DisplayPort 1.2 2 x USB 2.0 (downstream) 2 x USB 3.0 (downstream)
Audio
Audio Speakers	2 x 2W
Features
Cool Features	HDCP (High-bandwidth Digital Content Protection) Low Blue Light Senseye 3 AMA (Advanced Motion Accelerator) Flicker-free technology	Flicker-free technology Low Blue Light
Extra Features	Anti-theft stand lock slot - Kensington	Security lock slot
Ergonomics
Case Width		20.91 in 53.1 cm 531 mm 1.74 ft
Case Height		14.35 in 36.5 cm 364.5 mm 1.2 ft
Vesa Mount Support	No	Yes
VESA Interface Standard Size	75 x 75	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	No	Yes
Left Swivel		45 °
Right Swivel		45 °
Forward and Backward Tilt Support	Yes	Yes
Forward Tilt	5 °	5 °
Backward Tilt	20 °	21 °
Frequency and Interpolation
Vertical Digital Frequency	50 Hz - 76 Hz	60 Hz
Horizontal Digital Frequency	30 kHz - 83 kHz
Screen Interpolation Measurement Unit		NULL
Accessories
Extras	D-sub cable HDMI cable	DisplayPort cable D-Sub cable (Japan only)
Certificates and Standards
Licenses	ENERGY STAR 6.0 TCO Certified Displays 6.0	ENERGY STAR EPEAT RoHS TCO Certified Display
Usage and Storage Requirements
Safe Operating Temperature Level		0 °C - 40 °C 32 °F - 104 °F
Safe Operating Humidity Level		20 % - 80 %
Internal Storage Temperature		-20 °C - 60 °C -4 °F - 140 °F
Internal Storage Humidity		10 % - 90 %
Max Operating Altitude		5000
Max Storage Altitude		12192

BenQ EW2755ZH

Dell P2421