Comparison between Dell ST2421L vs Dell UltraSharp U2719D

General Info
Model Number	Dell ST2421L	Dell UltraSharp U2719D

Price	Check on Amazon	Check on Amazon
Type	Monitor	Monitor
Year	2010	2018
Brand	Dell	Dell
Model Number	ST2421L	UltraSharp U2719D
Display
Screen Size Class	24" (inches)	27" (inches)
Diagonal Size	24 in 61 cm 609.7 mm 2 ft	27 in 68.6 cm 685.8 mm 2.25 ft
Screen Width	20.92 in 53.1 cm 531.36 mm 1.74 ft	23.49 in 59.7 cm 596.736 mm 1.96 ft
Screen Height	11.77 in 29.9 cm 298.89 mm 0.98 ft	13.22 in 33.6 cm 335.664 mm 1.1 ft
Display Manufacturer		Samsung
Display Type	TN	PLS
Display Bit Depth	8 bits	8 bits
Frame Rate Control	Yes	No
Max Number of Colors	16777216	16777216
Bits	24	24
Screen Aspect Ratio	16:9	16:9
Screen Resolution	1920 x 1080	2560 x 1440
Screen Pixel Pitch	0.277 mm	0.233 mm
Screen Pixel Density	91 ppi	109 ppi
Screen-to-Body Ratio	77.5 %	92.16 %
Backlight Source	W-LED	W-LED
DCI P3		85%
sRGB		99 %
Screen Brightness	250 cd/m²	350 cd/m²
Static Screen Contrast	1000 : 1	1000 : 1
Dynamic Screen Contrast	7000000 : 1
Screen Horizontal Viewing Angle	170 °	178 °
Screen Vertical Viewing Angle	160 °	178 °
Screen Input Lag		6 ms
Display Minimum Response Time	5 ms	5 ms
Display Average Response Time		8 ms
Display Maximum Response Time		15 ms
Display Coating	Anti-glare/Matte (3H)	Anti-glare/Matte (3H)
3D	No	No
Size, weight, color
Case Depth	2.35 in 6 cm 59.72 mm 0.2 ft	1.54 in 3.9 cm 39 mm 0.13 ft
Case Weight	3.65 kg 8 lbs	3.92 kg 9 lbs
Case Width with Stand	22.64 in 57.5 cm 574.96 mm 1.89 ft	24.1 in 61.2 cm 612.2 mm 2.01 ft
Case Height with Stand	16.47 in 41.8 cm 418.24 mm 1.37 ft	15.36 in 39 cm 390.2 mm 1.28 ft
Case Depth with Stand	8.02 in 20.4 cm 203.68 mm 0.67 ft	7.09 in 18 cm 180 mm 0.59 ft
Case Weight with Stand	4.29 kg 9 lbs	5.96 kg 13 lbs
Case Color	Black	Black, Silver
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 2 x DVI-D Dual Link	2 x USB 3.0 (charger - 5V/2.0A) 1 x HDMI 1.4 1 x DisplayPort 1.4 (Output MST) 1 x 3.5 mm Audio Out 1 x DisplayPort 1.4 1 x USB 3.0 (upstream) 2 x USB 3.0 (downstream)
Audio
Features
Cool Features	HDCP (High-bandwidth Digital Content Protection)	HDCP (High-bandwidth Digital Content Protection) 2.2 DDC/CI Flicker-free technology
Extra Features	Security lock slot	Security lock slot
Ergonomics
Case Width	22.64 in 57.5 cm 574.96 mm 1.89 ft	24.1 in 61.2 cm 612.2 mm 2.01 ft
Case Height	14.03 in 35.6 cm 356.43 mm 1.17 ft	13.98 in 35.5 cm 355 mm 1.16 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		40 °
Right Swivel		40 °
Forward and Backward Tilt Support	Yes	Yes
Forward Tilt	4 °	5 °
Backward Tilt	21 °	21 °
Frequency and Interpolation
Vertical Digital Frequency	56 Hz - 76 Hz	56 Hz - 76 Hz
Horizontal Digital Frequency	30 kHz - 83 kHz	30 kHz - 90 kHz
Accessories
Extras	D-sub cable DVI cable	DisplayPort cable USB 3.0 upstream cable
Certificates and Standards
Licenses	ENERGY STAR 5.0	CECP ENERGY STAR Epeat Gold RoHS compliant TCO Certified Displays
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	3657.6	5000
Max Storage Altitude	12192	12192

Dell ST2421L

Dell UltraSharp U2719D