Comparison between Dell U3421WE vs Lenovo ThinkVision P40w-20

General Info
Model Number	Dell U3421WE	Lenovo ThinkVision P40w-20

Price	Check on Amazon	Check on Amazon
Type	Monitor	Monitor
Year	2020	2021
Brand	Dell	Lenovo
Model Series	UltraSharp
Model Number	U3421WE	ThinkVision P40w-20
Alias	UltraSharp U3421WE	P40w-20
Display
Screen Size Class	34" (inches)	40" (inches)
Diagonal Size	34.14 in 86.7 cm 867.2 mm 2.85 ft	39.71 in 100.9 cm 1008.59 mm 3.31 ft
Screen Width	31.49 in 80 cm 799.8 mm 2.62 ft	36.59 in 92.9 cm 929.28 mm 3.05 ft
Screen Height	13.18 in 33.5 cm 334.8 mm 1.1 ft	15.43 in 39.2 cm 392.04 mm 1.29 ft
Display Curvature	1900	2500
Display Manufacturer	LG Display
Display Type	AH-IPS	IPS
Display Bit Depth	10 bits	10 bits
Max Number of Colors	1073741824	1073741824
Bits	30	30
Screen Aspect Ratio	21:9	21:9
Screen Resolution	3440 x 1440	5120 x 2160
Screen Pixel Pitch	0.233 mm	0.182 mm
Screen Pixel Density	109 ppi	140 ppi
Screen-to-Body Ratio		89.68 %
Backlight Source	W-LED	W-LED
DCI P3	95%	98%
sRGB	99 %	99 %
Screen Brightness	300 cd/m²	300 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 Coating	Anti-glare/Matte (3H)	Anti-glare/Matte (3H)
3D	No	No
Size, weight, color
Case Depth		3.97 in 10.1 cm 100.8 mm 0.33 ft
Case Weight	7.52 kg 17 lbs	9.95 kg 22 lbs
Case Width with Stand	32.02 in 81.3 cm 813.3 mm 2.67 ft	37.31 in 94.8 cm 947.6 mm 3.11 ft
Case Height with Stand	15.46 in 39.3 cm 392.8 mm 1.29 ft	20.13 in 51.1 cm 511.2 mm 1.68 ft
Case Depth with Stand	9.35 in 23.7 cm 237.4 mm 0.78 ft	11 in 27.9 cm 279.4 mm 0.92 ft
Case Weight with Stand	11.87 kg 26 lbs	14.65 kg 32 lbs
Case Color	Platinum Silver	Raven Black
Hardware
Built-in Camera	No	No
Connectivity	4 x USB 3.2 (Type-A; Gen 1; downstream; 5 Gbps) 1 x USB 3.2 (Type-B; Gen 1; upstream) 2 x HDMI 2.0 1 x 3.5 mm Audio Out 1 x DisplayPort 1.4 1 x Ethernet RJ45 1 x USB 3.1 (Type-C; upstream; 90W; DP Alt Mode) 1 x USB 3.1 (Type-C; downstream; 15W)	1 x USB 3.2 (Type-C; Gen 1; upstream; 27W) 1 x Ethernet RJ45 (Gigabit) 1 x DisplayPort 1.4 1 x Thunderbolt 4.0 (Type-C; upstream; 100W; DP Alt Mode) 1 x Thunderbolt 4.0 1 x HDMI 2.0 4 x USB 3.2 (Type-A; Gen 1; downstream) 1 x 3.5 mm Audio Out (line-out for speakers) 1 x USB 3.2 (Type-B; Gen 1; upstream)
Audio
Audio Speakers	2 x 5W	2 x 9W
Features
Cool Features	KVM Switch Low Blue Light Picture-in-Picture Picture-by-Picture ComfortView Flicker-free technology	Flicker-free technology Natural Low Blue Light technology Picture-in-Picture True Split technology Picture-by-Picture 3-side NearEdgeless Design eKVM switch
Extra Features	Security lock slot	Anti-theft stand lock slot - Kensington
Ergonomics
Case Width	32.02 in 81.3 cm 813.3 mm 2.67 ft	37.31 in 94.8 cm 947.6 mm 3.11 ft
Case Height		16.88 in 42.9 cm 428.7 mm 1.41 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	150 mm 15 cm 5.9055 in 0.4921 ft	130 mm 13 cm 5.1181 in 0.4265 ft
Landscape or Portrait Pivot Support	No	No
Left or Right Swivel Support	Yes	Yes
Left Swivel	30 °	45 °
Right Swivel	30 °	45 °
Forward and Backward Tilt Support	Yes	Yes
Forward Tilt	5 °	5 °
Backward Tilt	21 °	22 °
Frequency and Interpolation
Vertical Digital Frequency	60 Hz	48 Hz - 75 Hz
Screen Interpolation Measurement Unit	NULL	NULL
Accessories
Extras	DisplayPort cable HDMI cable USB Type-A to Type-B cable USB Type-C to Type-C cable	Thunderbolt 4 cabke (40 Gbps)
Certificates and Standards
Licenses	Energy Star EPEAT Gold RoHS TCO Certified Displays TUV Rheinland Flicker Free Certified TUV Rheinland Low Blue Light Certified	CCC China Energy Efficiency Standard Tier 2 EnergyStar 8.0 EPEAT Silver TCO Certified Displays 8.0 TCO Edge 2.0 TÜV Rheinland Eyesafe Display Certification Windows Certification (Windows 10)
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 U3421WE

Lenovo ThinkVision P40w-20