Comparison between Dell 2709W vs Dell U2421HE

General Info
Model Number	Dell 2709W	Dell U2421HE

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Type	Monitor	Monitor
Year	2008	2020
Brand	Dell	Dell
Model Number	2709W	U2421HE
Display
Screen Size Class	27" (inches)	24" (inches)
Diagonal Size	26.96 in 68.5 cm 684.7 mm 2.25 ft	23.81 in 60.5 cm 604.7 mm 1.98 ft
Screen Width	22.9 in 58.2 cm 581.76 mm 1.91 ft	20.75 in 52.7 cm 527.04 mm 1.73 ft
Screen Height	14.31 in 36.4 cm 363.6 mm 1.19 ft	11.67 in 29.6 cm 296.46 mm 0.97 ft
Display Manufacturer	Samsung
Display Type	S-PVA	IPS
Display Bit Depth	10 bits	8 bits
Frame Rate Control	No
Max Number of Colors	1073741824	16777216
Bits	30	24
Screen Aspect Ratio	16:10	16:9
Screen Resolution	1920 x 1200	1920 x 1080
Screen Pixel Pitch	0.303 mm	0.275 mm
Screen Pixel Density	83 ppi	92 ppi
Screen-to-Body Ratio	80.85 %	92.49 %
Backlight Source	CCFL	W-LED
DCI P3		89%
sRGB		99 %
NTSC 1953	110 %
Screen Brightness	400 cd/m²	250 cd/m²
Static Screen Contrast	1300 : 1	1000 : 1
Dynamic Screen Contrast	3000 : 1
Screen Horizontal Viewing Angle	178 °	178 °
Screen Vertical Viewing Angle	178 °	178 °
Screen Input Lag	47 ms
Display Minimum Response Time	6 ms	5 ms
Display Average Response Time	16 ms	8 ms
Display Coating	Anti-glare/Matte (3H)	Anti-glare/Matte (3H)
3D	No	No
Size, weight, color
Case Depth	3.48 in 8.8 cm 88.4 mm 0.29 ft	1.54 in 3.9 cm 39 mm 0.13 ft
Case Weight	8.3 kg 18 lbs	3.37 kg 7 lbs
Case Width with Stand	24.89 in 63.2 cm 632.1 mm 2.07 ft	21.2 in 53.9 cm 538.5 mm 1.77 ft
Case Height with Stand	17.79 in 45.2 cm 451.9 mm 1.48 ft	13.72 in 34.8 cm 348.4 mm 1.14 ft
Case Depth with Stand	7.87 in 20 cm 200 mm 0.66 ft	6.5 in 16.5 cm 165 mm 0.54 ft
Case Weight with Stand	11 kg 24 lbs	5.32 kg 12 lbs
Case Color	Black	Black
Hardware
Built-in Camera	No	No
Connectivity	1 x HDMI 1 x DisplayPort 1.2 1 x D-sub 1 x AV Component In (YPbPr + L/R) 1 x AV Composite In (Video + L/R) 2 x DVI-D Dual Link 4 x USB 2.0 (downstream) 3 x 3.5 mm Audio Out 1 x USB 2.0 (upstream)	1 x USB 3.1 (Type-C; upstream; DP; 65W) 1 x Ethernet RJ45 1 x DisplayPort 1.4 1 x 3.5 mm Audio Out 1 x DisplayPort 1.4 (Output MST) 1 x HDMI 1.4 2 x USB 3.0 (downstream) 2 x USB 3.0 (downstream; BC 1.2)
Audio
Features
Cool Features	HDCP (High-bandwidth Digital Content Protection)	Flicker-free technology Low Blue Light
Extra Features	9 in 2 media card reader	Security lock slot
Ergonomics
Case Width	24.89 in 63.2 cm 632.1 mm 2.07 ft	21.2 in 53.9 cm 538.5 mm 1.77 ft
Case Height	16.3 in 41.4 cm 413.9 mm 1.36 ft	12.35 in 31.4 cm 313.7 mm 1.03 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	90 mm 9 cm 3.5433 in 0.2953 ft	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	Yes	Yes
Left Swivel	40 °	40 °
Right Swivel	40 °	40 °
Forward and Backward Tilt Support	Yes	Yes
Forward Tilt	3 °	5 °
Backward Tilt	21 °	21 °
Frequency and Interpolation
Vertical Digital Frequency	56 Hz - 76 Hz	56 Hz - 76 Hz
Horizontal Digital Frequency	30 kHz - 81 kHz	30 kHz - 83 kHz
Screen Interpolation Measurement Unit		NULL
Accessories
Extras	D-sub cable DisplayPort cable USB 2.0 upstream cable	DisplayPort cable USB Type-C to Type-C cable
Certificates and Standards
Licenses	ENERGY STAR 4.0 Epeat Silver TCO Certified Displays	ENERGY STAR EPEAT TCO Certified RoHS NFPA 99
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 2709W

Dell U2421HE