Comparison between Dell P2815Q vs Dell P2721Q

General Info
Model Number	Dell P2815Q	Dell P2721Q

Price	Check on Amazon	Check on Amazon
Type	Monitor	Monitor
Year	2014	2020
Brand	Dell	Dell
Model Number	P2815Q	P2721Q
Display
Screen Size Class	28" (inches)	27" (inches)
Diagonal Size	28 in 71.1 cm 711.2 mm 2.33 ft	26.96 in 68.5 cm 684.667 mm 2.25 ft
Screen Width	24.45 in 62.1 cm 620.93 mm 2.04 ft	23.49 in 59.7 cm 596.736 mm 1.96 ft
Screen Height	13.44 in 34.1 cm 341.28 mm 1.12 ft	13.22 in 33.6 cm 335.664 mm 1.1 ft
Display Manufacturer	Innolux
Display Type	TN	IPS
Display Bit Depth	10 bits (8 bits + FRC)	10 bits
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	0.162 mm	0.155 mm
Screen Pixel Density	157 ppi	163 ppi
Screen-to-Body Ratio	83.95 %
Backlight Source	W-LED	W-LED
sRGB	97 %	99 %
Adobe RGB 1998	66 %
NTSC 1953	72 %
Screen Brightness	300 cd/m²	350 cd/m²
Static Screen Contrast	1000 : 1	1000 : 1
Screen Horizontal Viewing Angle	170 °	178 °
Screen Vertical Viewing Angle	160 °	178 °
Screen Input Lag	120 ms
Display Minimum Response Time	5 ms	5 ms
Display Average Response Time	18 ms	8 ms
Display Maximum Response Time	25 ms
Display Coating	Anti-glare/Matte (3H)	Anti-glare/Matte (3H)
3D	No	No
Size, weight, color
Case Depth	2.21 in 5.6 cm 56.2 mm 0.18 ft
Case Weight	5.19 kg 11 lbs	5.1 kg 11 lbs
Case Width with Stand	26.04 in 66.1 cm 661.3 mm 2.17 ft	24.08 in 61.2 cm 611.6 mm 2.01 ft
Case Height with Stand	17.14 in 43.5 cm 435.3 mm 1.43 ft	15.17 in 38.5 cm 385.2 mm 1.26 ft
Case Depth with Stand	8.04 in 20.4 cm 204.1 mm 0.67 ft	7.28 in 18.5 cm 185 mm 0.61 ft
Case Weight with Stand	7.2 kg 16 lbs
Case Color	Black	Apollo Gray
Hardware
Built-in Camera	No	No
Connectivity	1 x HDMI 1.4 (MHL) 1 x DisplayPort (Output MST) 1 x DisplayPort 1.2 (Input mini) 1 x 3.5 mm Audio Out 1 x DisplayPort 1.2 4 x USB 3.0 (downstream) 1 x USB 3.0 (upstream)	2 x USB 3.2 (Type-A; Gen 1; downstream) 1 x HDMI 2.0 1 x 3.5 mm Audio Out 1 x DisplayPort 1.2 2 x USB 2.0 (Type-A; downstream) 1 x USB 3.2 (Type-C; Gen 1; upstream; 65W; DP Alt Mode)
Audio
Features
Cool Features	HDCP (High-bandwidth Digital Content Protection)	Flicker-free technology Low Blue Light
Extra Features	Security lock slot	Anti-theft stand lock slot - Kensington
Ergonomics
Case Width	26.04 in 66.1 cm 661.3 mm 2.17 ft	24.08 in 61.2 cm 611.6 mm 2.01 ft
Case Height	15.03 in 38.2 cm 381.7 mm 1.25 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	115 mm 11.5 cm 4.5276 in 0.3773 ft	150 mm 15 cm 5.9055 in 0.4921 ft
Landscape or Portrait Pivot Support	Yes	Yes
Left Pivot	90 °	90 °
Right Pivot	90 °	90 °
Left or Right Swivel Support	Yes	Yes
Left Swivel	45 °	45 °
Right Swivel	45 °	45 °
Forward and Backward Tilt Support	Yes	Yes
Forward Tilt	5 °	5 °
Backward Tilt	21 °	21 °
Frequency and Interpolation
Vertical Digital Frequency	24 Hz - 85 Hz
Horizontal Digital Frequency	31 kHz - 114 kHz
Screen Interpolation Measurement Unit		NULL
Accessories
Extras	DisplayPort cable - mini-DP to DP USB 3.0 upstream cable	DisplayPort cable USB Type-C to Type-C cable USB Type-C to Type-A cable
Certificates and Standards
Licenses	ENERGY STAR 6.0 Epeat Gold RoHS TCO Certified Displays	CEC CECP CEL ENERGY STAR 8.0 EPEAT RoHS TCO Certified Displays 8.0 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 P2815Q

Dell P2721Q