Comparison between Dell UltraSharp U2312M vs Dell P2421

General Info
Model Number	Dell UltraSharp U2312M	Dell P2421

Price	Check on Amazon	Check on Amazon
Type	Monitor	Monitor
Year	2011	2020
Brand	Dell	Dell
Model Number	UltraSharp U2312M	P2421
Display
Screen Size Class	23" (inches)	24" (inches)
Diagonal Size	22.99 in 58.4 cm 584 mm 1.92 ft	24.06 in 61.1 cm 611 mm 2 ft
Screen Width	20.05 in 50.9 cm 509.184 mm 1.67 ft	20.41 in 51.8 cm 518.4 mm 1.7 ft
Screen Height	11.28 in 28.6 cm 286.416 mm 0.94 ft	12.76 in 32.4 cm 324 mm 1.06 ft
Display Manufacturer	LG Display
Display Type	e-IPS	IPS
Display Bit Depth	8 bits (6 bits + FRC)	8 bits
Frame Rate Control	Yes
Max Number of Colors	16777216	16777216
Bits	24	24
Screen Aspect Ratio	16:9	16:10
Screen Resolution	1920 x 1080	1920 x 1200
Screen Pixel Pitch	0.265 mm	0.27 mm
Screen Pixel Density	95 ppi	94 ppi
Screen-to-Body Ratio	82.56 %	86.78 %
Backlight Source	W-LED	W-LED
sRGB	99 %	99 %
Adobe RGB 1998	74 %
NTSC 1953	72 %
Screen Brightness	300 cd/m²	300 cd/m²
Static Screen Contrast	1000 : 1	1000 : 1
Dynamic Screen Contrast	2000000 : 1
Screen Horizontal Viewing Angle	178 °	178 °
Screen Vertical Viewing Angle	178 °	178 °
Screen Input Lag	1 ms
Display Minimum Response Time	8 ms	5 ms
Display Average Response Time		8 ms
Display Maximum Response Time	14 ms
Display Coating	Anti-glare/Matte (3H)	Anti-glare/Matte (3H)
3D	No
Size, weight, color
Case Depth	2.34 in 6 cm 59.5 mm 0.2 ft	1.74 in 4.4 cm 44.1 mm 0.14 ft
Case Weight	2.96 kg 7 lbs	3.5 kg 8 lbs
Case Width with Stand	21.51 in 54.6 cm 546.4 mm 1.79 ft	20.91 in 53.1 cm 531 mm 1.74 ft
Case Height with Stand	14.37 in 36.5 cm 365 mm 1.2 ft	14.6 in 37.1 cm 370.8 mm 1.22 ft
Case Depth with Stand	7.3 in 18.5 cm 185.4 mm 0.61 ft	6.54 in 16.6 cm 166 mm 0.54 ft
Case Weight with Stand	5.18 kg 11 lbs
Case Color	Black
Hardware
Built-in Camera	No	No
Connectivity	1 x DisplayPort 1.2 1 x DVI-D Dual Link 1 x D-sub 4 x USB 2.0 (downstream) 1 x USB 2.0 (upstream)	1 x USB 3.0 (upstream) 1 x HDMI 1.4 1 x DVI-D 1 x D-sub 1 x DisplayPort 1.2 2 x USB 2.0 (downstream) 2 x USB 3.0 (downstream)
Audio
Features
Cool Features	HDCP (High-bandwidth Digital Content Protection)	Flicker-free technology Low Blue Light
Extra Features	Security lock slot	Security lock slot
Ergonomics
Case Width	21.51 in 54.6 cm 546.4 mm 1.79 ft	20.91 in 53.1 cm 531 mm 1.74 ft
Case Height	12.73 in 32.3 cm 323.3 mm 1.06 ft	14.35 in 36.5 cm 364.5 mm 1.2 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	130 mm 13 cm 5.1181 in 0.4265 ft	130 mm 13 cm 5.1181 in 0.4265 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	4 °	5 °
Backward Tilt	21 °	21 °
Frequency and Interpolation
Vertical Digital Frequency	56 Hz - 76 Hz	60 Hz
Horizontal Digital Frequency	30 kHz - 83 kHz
Screen Interpolation Measurement Unit		NULL
Accessories
Extras	D-sub cable DVI cable USB upstream cable	DisplayPort cable D-Sub cable (Japan only)
Certificates and Standards
Licenses	ENERGY STAR 5.0 Epeat Gold TCO Certified Displays 5.0	ENERGY STAR EPEAT RoHS TCO Certified Display
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 %	20 % - 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 %	10 % - 90 %
Max Operating Altitude	3048	5000
Max Storage Altitude	10668	12192

Dell UltraSharp U2312M

Dell P2421