Comparison between Dell InfinityEdge S2718D vs Dell S2721D

General Info
Model Number	Dell InfinityEdge S2718D	Dell S2721D

Price	Check on Amazon	Check on Amazon
Type	Monitor	Monitor
Year	2017	2020
Brand	Dell	Dell
Model Number	InfinityEdge S2718D	S2721D
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	23.49 in 59.7 cm 596.736 mm 1.96 ft	23.49 in 59.7 cm 596.736 mm 1.96 ft
Screen Height	13.22 in 33.6 cm 335.664 mm 1.1 ft	13.22 in 33.6 cm 335.664 mm 1.1 ft
Display Type	IPS	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	16:9
Screen Resolution	2560 x 1440	2560 x 1440
Screen Pixel Pitch	0.233 mm	0.233 mm
Screen Pixel Density	109 ppi	109 ppi
Screen-to-Body Ratio	93.36 %	89.83 %
Backlight Source	W-LED	W-LED
sRGB	99 %	99 %
Adobe RGB 1998	68 %
Screen Brightness	300 cd/m²	320 cd/m²
Static Screen Contrast	1000 : 1	1000 : 1
Dynamic Screen Contrast	8000000 : 1
Screen Horizontal Viewing Angle	178 °	178 °
Screen Vertical Viewing Angle	178 °	178 °
Screen Input Lag		10 ms
Display Minimum Response Time	8 ms	4 ms
Display Average Response Time		8 ms
Display Maximum Response Time	23 ms
Display Coating	Anti-glare/Matte (3H)	Anti-glare/Matte (3H)
HDR	HDR10
3D	No	No
Size, weight, color
Case Depth	0.8 in 2 cm 20.3 mm 0.07 ft	2.18 in 5.5 cm 55.4 mm 0.18 ft
Case Weight		4.4 kg 10 lbs
Case Width with Stand	24.1 in 61.2 cm 612.14 mm 2.01 ft	24.08 in 61.2 cm 611.6 mm 2.01 ft
Case Height with Stand	17.8 in 45.2 cm 452.1 mm 1.48 ft	17.85 in 45.3 cm 453.4 mm 1.49 ft
Case Depth with Stand	7.1 in 18 cm 180.3 mm 0.59 ft	7.35 in 18.7 cm 186.8 mm 0.61 ft
Case Weight with Stand	6.85 kg 15 lbs	5.4 kg 12 lbs
Case Color	Black, Silver	Silver
Hardware
Built-in Camera	No	No
Connectivity	1 x HDMI 2.0 1 x 3.5 mm Audio Out 2 x USB 3.0 (downstream) 1 x USB 3.0 (Type-C)	1 x 3.5 mm Audio Out 2 x HDMI 1.4 1 x DisplayPort 1.2
Audio
Audio Speakers		2 x 3W
Features
Cool Features	Low Blue Light Flicker-free technology HDCP (High-bandwidth Digital Content Protection)	Flicker-free technology Low Blue Light 3-sided bezeless design AMD FreeSync technology
Extra Features	Security lock slot	Anti-theft stand lock slot - Kensington
Ergonomics
Case Width	24.1 in 61.2 cm 612.14 mm 2.01 ft	24.08 in 61.2 cm 611.6 mm 2.01 ft
Case Height	13.8 in 35.1 cm 350.5 mm 1.15 ft	14.35 in 36.5 cm 364.6 mm 1.2 ft
Vesa Mount Support	No	Yes
VESA Interface Standard Size	100 x 100	100 x 100
Removable VESA Stand	Yes	Yes
Height Adjustment	No	No
Landscape or Portrait Pivot Support	No	No
Left or Right Swivel Support	Yes	No
Left Swivel	45 °
Right Swivel	45 °
Forward and Backward Tilt Support	Yes	Yes
Forward Tilt	5 °	5 °
Backward Tilt	21 °	21 °
Frequency and Interpolation
Vertical Digital Frequency	48 Hz - 75 Hz	48 Hz - 75 Hz
Horizontal Digital Frequency	30 kHz - 140 kHz	30 kHz - 115 kHz
Screen Interpolation Measurement Unit		NULL
Accessories
Extras	HDMI cable USB Type-C cable	HDMI cable
Certificates and Standards
Licenses	CECP CEL ENERGY STAR ErP RoHS Compliant TCO Certified Displays WEEE	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	0 °C - 40 °C 32 °F - 104 °F
Safe Operating Humidity Level	10 % - 80 %	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	5000	5000
Max Storage Altitude	12192	12192

Dell InfinityEdge S2718D

Dell S2721D