Comparison between Dell U2721DE vs Lenovo ThinkVision X1 (2nd GEN)

General Info
Model Number	Dell U2721DE	Lenovo ThinkVision X1 (2nd GEN)

Price	Check on Amazon	Check on Amazon
Type	Monitor	Monitor
Year	2020	2018
Brand	Dell	Lenovo
Model Number	U2721DE	ThinkVision X1 (2nd GEN)
Alias		ThinkVision X1 (2018)
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 596.74 mm 1.96 ft
Screen Height	13.22 in 33.6 cm 335.664 mm 1.1 ft	13.21 in 33.6 cm 335.66 mm 1.1 ft
Display Type	IPS	IPS
Display Bit Depth	8 bits	10 bits
Frame Rate Control		No
Max Number of Colors	16777216	1073741824
Bits	24	30
Screen Aspect Ratio	16:9	16:9
Screen Resolution	2560 x 1440	3840 x 2160
Screen Pixel Pitch	0.233 mm	0.155 mm
Screen Pixel Density	109 ppi	163 ppi
Screen-to-Body Ratio	92.16 %	93.4 %
Backlight Source	W-LED	W-LED
DCI P3	89%
sRGB	99 %	99 %
Screen Brightness	350 cd/m²	350 cd/m²
Static Screen Contrast	1000 : 1	1000 : 1
Dynamic Screen Contrast		3000000 : 1
Screen Horizontal Viewing Angle	178 °	178 °
Screen Vertical Viewing Angle	178 °	178 °
Display Minimum Response Time	5 ms	4 ms
Display Average Response Time	8 ms	6 ms
Display Maximum Response Time		14 ms
Display Coating	Anti-glare/Matte (3H)	Anti-glare/Matte
3D	No	No
Size, weight, color
Case Depth	1.54 in 3.9 cm 39 mm 0.13 ft	1.29 in 3.3 cm 32.7 mm 0.11 ft
Case Weight	4.19 kg 9 lbs	4.29 kg 9 lbs
Case Width with Stand	24.1 in 61.2 cm 612.2 mm 2.01 ft	24.01 in 61 cm 609.74 mm 2 ft
Case Height with Stand	15.36 in 39 cm 390.2 mm 1.28 ft	18.69 in 47.5 cm 474.76 mm 1.56 ft
Case Depth with Stand	7.09 in 18 cm 180 mm 0.59 ft	9.24 in 23.5 cm 234.81 mm 0.77 ft
Case Weight with Stand	6.24 kg 14 lbs	5.59 kg 12 lbs
Case Color	Black	Black
Hardware
Built-in Camera	No	Yes
Connectivity	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)	1 x DisplayPort 1.2 1 x Thunderbolt 3.0 1 x 3.5 mm Audio Out 4 x USB 3.0 (downstream) 1 x HDMI 2.0
Audio
Features
Cool Features	Flicker-free technology Low Blue Light	HDCP (High-bandwidth Digital Content Protection) Low Blue Light
Extra Features	Security lock slot	Anti-theft stand lock slot - Kensington
Ergonomics
Case Width	24.1 in 61.2 cm 612.2 mm 2.01 ft	24.01 in 61 cm 609.74 mm 2 ft
Case Height	13.98 in 35.5 cm 355 mm 1.16 ft	13.85 in 35.2 cm 351.71 mm 1.15 ft
Vesa Mount Support	Yes	No
VESA Interface Standard Size	100 x 100	100 x 100
Removable VESA Stand	Yes	Yes
Height Adjustment	Yes	No
Height Adjustment Range	130 mm 13 cm 5.1181 in 0.4265 ft
Landscape or Portrait Pivot Support	Yes	No
Left Pivot	90 °
Right Pivot	90 °
Left or Right Swivel Support	Yes	No
Left Swivel	40 °
Right Swivel	40 °
Forward and Backward Tilt Support	Yes	Yes
Forward Tilt	5 °	5 °
Backward Tilt	21 °	30 °
Frequency and Interpolation
Vertical Digital Frequency	56 Hz - 76 Hz	23 Hz - 80 Hz
Horizontal Digital Frequency	30 kHz - 90 kHz	24 kHz - 60 kHz
Screen Interpolation Measurement Unit	NULL
Accessories
Extras	DisplayPort cable USB Type-C to Type-C cable	HDMI cable USB Type-C cable USB Type-C to Type-A cable
Certificates and Standards
Licenses	ENERGY STAR EPEAT TCO Certified RoHS NFPA 99	ENERGY STAR 7.0 FCC Class B RoHS TCO Certified Display 7.0 TÜV Eye Comfort WHQL (Windows 10; Windows 8.1; Windows 8; Windows 7)
Usage and Storage Requirements
Safe Operating Temperature Level	0 °C - 40 °C 32 °F - 104 °F	0 °C - 45 °C 32 °F - 113 °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 % - 95 %
Max Operating Altitude	5000	5000
Max Storage Altitude	12192	12192

Dell U2721DE

Lenovo ThinkVision X1 (2nd GEN)