Comparison between Dell S2721Q vs Dell U2720Q

General Info
Model Number	Dell S2721Q	Dell U2720Q

Price	Check on Amazon	Check on Amazon
Type	Monitor	Monitor
Year	2020	2020
Brand	Dell	Dell
Model Series		UltraSharp
Model Number	S2721Q	U2720Q
Alias		UltraSharp U2720Q
Display
Screen Size Class	27" (inches)	27" (inches)
Diagonal Size	26.96 in 68.5 cm 684.7 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	10 bits	10 bits (8 bits + FRC)
Frame Rate Control		Yes
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	89.83 %	92.04 %
Backlight Source	W-LED	W-LED
DCI P3		95%
sRGB	99 %	99 %
Screen Brightness	350 cd/m²	350 cd/m²
Static Screen Contrast	1300 : 1	1300 : 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	8 ms	8 ms
Display Coating	Anti-glare/Matte (3H)	Anti-glare/Matte (3H)
HDR		DisplayHDR 400
3D	No	No
Size, weight, color
Case Depth	2.18 in 5.5 cm 55.4 mm 0.18 ft	1.96 in 5 cm 49.7 mm 0.16 ft
Case Weight	4.7 kg 10 lbs	4.4 kg 10 lbs
Case Width with Stand	24.08 in 61.2 cm 611.6 mm 2.01 ft	24.07 in 61.1 cm 611.3 mm 2.01 ft
Case Height with Stand	17.85 in 45.3 cm 453.4 mm 1.49 ft	15.56 in 39.5 cm 395.2 mm 1.3 ft
Case Depth with Stand	7.35 in 18.7 cm 186.8 mm 0.61 ft	7.28 in 18.5 cm 185 mm 0.61 ft
Case Weight with Stand	5.6 kg 12 lbs	6.6 kg 15 lbs
Case Color	Silver	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; downstream; 15W) 1 x DisplayPort 1.4 1 x 3.5 mm Audio 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
Audio Speakers	2 x 3W
Features
Cool Features	Flicker-free technology Low Blue Light 3-sided bezeless design AMD FreeSync technology	Flicker-free technology Low Blue Light
Extra Features	Anti-theft stand lock slot - Kensington	Security lock slot
Ergonomics
Case Width	24.08 in 61.2 cm 611.6 mm 2.01 ft	24.07 in 61.1 cm 611.3 mm 2.01 ft
Case Height	14.35 in 36.5 cm 364.6 mm 1.2 ft	14.02 in 35.6 cm 356 mm 1.17 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	No	Yes
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	40 Hz - 60 Hz	60 Hz
Horizontal Digital Frequency	130 kHz - 137 kHz
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	ENERGY STAR 8.0 EPEAT RoHS TCO Certified TUV Flicker Free TUV Low Blue Light	BFR-free CEL ENERGY STAR 6.0 EPEAT Mercury-free NFPA 99 PVC-free RoHS Compliant TCO
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 S2721Q

Dell U2720Q