Comparison between Acer S277HK vs Dell S2721QS

General Info
Model Number	Acer S277HK	Dell S2721QS

Price	Check on Amazon	Check on Amazon
Type	Monitor	Monitor
Year	2014	2020
Brand	Acer	Dell
Model Number	S277HK	S2721QS
Alias	S277HKwmidpp
Display
Screen Size Class	27" (inches)	27" (inches)
Diagonal Size	27 in 68.6 cm 685.8 mm 2.25 ft	26.96 in 68.5 cm 684.7 mm 2.25 ft
Screen Width	23.47 in 59.6 cm 596.16 mm 1.96 ft	23.49 in 59.7 cm 596.736 mm 1.96 ft
Screen Height	13.2 in 33.5 cm 335.34 mm 1.1 ft	13.22 in 33.6 cm 335.664 mm 1.1 ft
Display Manufacturer	AU Optronics
Display Type	AHVA IPS	IPS
Display Bit Depth	10 bits	10 bits
Frame Rate Control	No
Max Number of Colors	1073741824	1073741824
Bits	30	30
Screen Aspect Ratio	16:9	16:9
Screen Resolution	3840 x 2160	3840 x 2160
Screen Pixel Pitch	0.155 mm	0.155 mm
Screen Pixel Density	163 ppi	163 ppi
Screen-to-Body Ratio	80.2 %	89.83 %
Backlight Source	W-LED	W-LED
sRGB	100 %	99 %
Screen Brightness	300 cd/m²	350 cd/m²
Max Screen Brightness		390 cd/m²
Static Screen Contrast	1000 : 1	1300 : 1
Dynamic Screen Contrast	100000000 : 1
Screen Horizontal Viewing Angle	178 °	178 °
Screen Vertical Viewing Angle	178 °	178 °
Screen Input Lag	10 ms
Display Minimum Response Time	4 ms	4 ms
Display Average Response Time	6 ms	8 ms
Display Maximum Response Time	12 ms
Display Coating	Anti-glare/Matte (3H)	Anti-glare/Matte (3H)
3D	No	No
Size, weight, color
Case Depth	4.45 in 11.3 cm 113 mm 0.37 ft	2.18 in 5.5 cm 55.4 mm 0.18 ft
Case Weight	4.94 kg 11 lbs	4.7 kg 10 lbs
Case Width with Stand	24.17 in 61.4 cm 614 mm 2.01 ft	24.08 in 61.2 cm 611.6 mm 2.01 ft
Case Height with Stand	17.76 in 45.1 cm 451 mm 1.48 ft	15.75 in 40 cm 400.1 mm 1.31 ft
Case Depth with Stand	6.06 in 15.4 cm 154 mm 0.51 ft	6.88 in 17.5 cm 174.7 mm 0.57 ft
Case Weight with Stand	5.4 kg 12 lbs	6.4 kg 14 lbs
Case Color	White	Silver
Hardware
Built-in Camera	No	No
Connectivity	1 x DisplayPort 1.2 (Input mini) 1 x DVI-D Dual Link 1 x 3.5 mm Audio Out 1 x 3.5 mm Audio In 1 x HDMI 2.0 1 x DisplayPort 1.2	1 x 3.5 mm Audio Out 2 x HDMI 2.0 1 x DisplayPort 1.2
Audio
Audio Speakers	2 x 2W	2 x 3W
Features
Cool Features	HDCP (High-bandwidth Digital Content Protection) Picture-by-Picture Picture-in-Picture Blue Light Filter Flicker-free technology	Flicker-free technology Low Blue Light 3-sided bezeless design AMD FreeSync technology
Extra Features	Anti-theft stand lock slot - Kensington	Anti-theft stand lock slot - Kensington
Ergonomics
Case Width	24.17 in 61.4 cm 614 mm 2.01 ft	24.08 in 61.2 cm 611.6 mm 2.01 ft
Case Height	15.98 in 40.6 cm 406 mm 1.33 ft	14.35 in 36.5 cm 364.6 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		110 mm 11 cm 4.3307 in 0.3609 ft
Landscape or Portrait Pivot Support	No	Yes
Left Pivot		90 °
Right Pivot		90 °
Left or Right Swivel Support	No	Yes
Left Swivel		30 °
Right Swivel		30 °
Forward and Backward Tilt Support	Yes	Yes
Forward Tilt	5 °	5 °
Backward Tilt	15 °	21 °
Frequency and Interpolation
Vertical Digital Frequency	24 Hz - 75 Hz	40 Hz - 60 Hz
Horizontal Digital Frequency	31 kHz - 135 kHz	130 kHz - 137 kHz
Screen Interpolation Measurement Unit		NULL
Accessories
Extras	DisplayPort cable DVI-D cable	HDMI cable
Certificates and Standards
Licenses	CE ENERGY STAR 6.0 TCO Certified Displays 6.0 TÜV/GS	ENERGY STAR 8.0 EPEAT RoHS TCO Certified TUV Flicker Free TUV Low Blue Light
Usage and Storage Requirements
Safe Operating Temperature Level		0 °C - 40 °C 32 °F - 104 °F
Safe Operating Humidity Level		10 % - 80 %
Internal Storage Temperature		-20 °C - 60 °C -4 °F - 140 °F
Internal Storage Humidity		5 % - 90 %
Max Operating Altitude		5000
Max Storage Altitude		12192

Acer S277HK

Dell S2721QS