Dell UltraSharp 27 4K USB-C Monitor (U2720Q) vs Dell UltraSharp 34 Curved Thunderbolt Hub (U3425WE)

Every spec side by side, from each maker's published figures.

Only show differences

Better figure, where one is clearly better

Share comparison

UltraSharp 27 4K USB-C Monitor (U2720Q) compared with UltraSharp 34 Curved Thunderbolt Hub (U3425WE)

	DellUltraSharp 27 4K USB-C Monitor (U2720Q)	DellUltraSharp 34 Curved Thunderbolt Hub (U3425WE)
Overview
Released
Released	January 2020	February 2024
Display
Screen size
Screen size	27″	34.14″
Resolution
Resolution	3840 × 2160 (4K) (better)	3440 × 1440 (UWQHD)
Sharpness
Sharpness	163 pixels per inch (better)	109 pixels per inch
Panel
Panel	IPS	IPS (IPS Black)
Refresh rate
Refresh rate	60 Hz	120 Hz (better)
Response time (grey to grey)
Response time (grey to grey)	5 ms	5 ms
Brightness (typical)
Brightness (typical)	350 nits (better)	300 nits
HDR certification
HDR certification	DisplayHDR 400	–
HDR formats
HDR formats	HDR10	–
Contrast ratio
Contrast ratio	1,300:1	2,000:1
Colour range
Colour range	99% sRGB, 99% Rec. 709, 95% DCI-P3	98% DCI-P3, 98% Display P3, 100% sRGB
DCI-P3 coverage
DCI-P3 coverage	95%	98% (better)
Colour accuracy (Delta E)
Colour accuracy (Delta E)	Below 2	Below 2
Screen finish
Screen finish	Matte	Matte
Shape
Shape	Flat	Curved (1900R)
Colour depth
Colour depth	1.07 billion colours.	1.07 billion colours
sRGB coverage
sRGB coverage	99%	100% (CIE 1931)
Colour accuracy
Colour accuracy	Factory calibrated to average Delta E < 2 in sRGB mode.	Delta E < 2 (average) (DCI-P3, Display P3, sRGB, BT.709); factory calibration report in the box
Colour modes
Colour modes	sRGB and DCI-P3 modes listed in Dell's user guide.	–
HDR detail
HDR detail	VESA DisplayHDR 400; Dell's user guide describes HDR playback over HDMI 2.0a, DisplayPort 1.4 and USB-C DisplayPort 1.4 from compatible sources.	–
Response time detail
Response time detail	5 ms grey-to-grey in Fast mode; 8 ms in Normal mode.	5 ms (Fast), 8 ms (Normal)
Variable refresh range
Variable refresh range	–	48–120 Hz over DisplayPort and Thunderbolt 4; 48–100 Hz over HDMI (vertical scan range)
Viewing angles
Viewing angles	178° horizontal and vertical (typical).	178° horizontal, 178° vertical (typical)
Pixel pitch
Pixel pitch	0.1554 × 0.1554 mm.	0.2325 mm x 0.2325 mm
Eye care
Eye care	Flicker-free backlight and ComfortView low-blue-light mode.	ComfortView Plus hardware low blue light; TÜV Rheinland Eye Comfort 3.0 (5 star); ambient light sensor (Auto Brightness); flicker-free
Connections
Video inputs
Video inputs	HDMI 2.0, DisplayPort 1.4, USB-C	HDMI 2.1 (TMDS), DisplayPort 1.4, Thunderbolt 4
USB-C charging
USB-C charging	Up to 90 W	Up to 90 W
USB ports
USB ports	3 × USB-A, USB-C	2 × USB-C, 5 × USB-A, Thunderbolt 4
KVM switch
KVM switch	–	Yes
Ethernet
Ethernet	–	Yes
Speakers
Speakers	No	Yes
HDMI detail
HDMI detail	One HDMI 2.0 input.	1 x HDMI (HDCP 1.4 & 2.2), up to 3440 x 1440 at 100 Hz TMDS as specified in HDMI 2.1
DisplayPort detail
DisplayPort detail	One DisplayPort 1.4 input.	1 x DisplayPort 1.4 (HDCP 1.4 & 2.2), up to 3440 x 1440 at 120 Hz
USB-C detail
USB-C detail	USB-C upstream with DisplayPort 1.4 Alt Mode, USB 3.0 data and up to 90 W Power Delivery. Dell's user guide offers High Resolution and High Data Speed prioritisation modes for USB-C hosts.	Thunderbolt 4 upstream (40Gbps, DisplayPort 1.4 Alt Mode, Power Delivery up to 90 W); USB-C 10Gbps upstream (data only); 2 x USB-C 10Gbps downstream quick-access ports (15 W)
Daisy chaining
Daisy chaining	–	Thunderbolt 4 downstream port (video and data, 15 W)
USB hub detail
USB hub detail	Three downstream USB 3.0 Type-A ports, one with BC 1.2 charging up to 2 A; one downstream USB-C port charges at up to 3 A.	4 x USB-A 10Gbps rear; quick access ports with 1 x USB-A 10Gbps (BC 1.2) and 2 x USB-C 10Gbps (15 W)
Picture by picture
Picture by picture	–	Picture by Picture and Picture in Picture
Audio out
Audio out	3.5 mm audio line out; Dell says it does not support headphones.	3.5 mm audio line out
Speaker detail
Speaker detail	–	2 x 5 W
Design
Stand adjusts
Stand adjusts	Height, tilt, swivel, pivot (better)	Height, tilt, swivel
VESA mount
VESA mount	Yes	Yes
Weight with stand
Weight with stand	6.6 kg	10.81 kg
Height adjustment
Height adjustment	130 mm.	150 mm
Tilt
Tilt	-5° to 21°.	-5° to 21°
Swivel
Swivel	-45° to 45°.	-30° to 30°
Pivot
Pivot	-90° to 90°.	–
VESA pattern
VESA pattern	100 × 100 mm.	100 x 100 mm
Size with stand
Size with stand	611.3 × 185.0 × 395.2–525.2 mm (width × depth × height).	813.46 x 240.43 x 392.83–542.83 mm (W x D x H)
Size without stand
Size without stand	611.3 × 49.7 × 356.0 mm (width × depth × height).	813.46 x 105.08 x 359.15 mm (W x D x H)
Weight without stand
Weight without stand	4.4 kg.	7.78 kg
Colours
Colours	–	Silver
Controls
Controls	Front on-screen-display buttons and Dell Display Manager software.	–
Power and support
Power use
Power use	33 W typical and 200 W maximum in Dell's December 2019 brochure; its later user guide states 31.5 W on mode, 200 W maximum and 0.3 W standby under newer test rules.	31.5 W on mode, 0.5 W standby, 1.9 W networked standby, 0.3 W off, 250 W maximum
Energy class
Energy class	–	F
Power supply
Power supply	100–240 V AC, 50/60 Hz.	100–240 VAC, 50/60 Hz, 3.2 A (typical)
Software
Software	Dell Display Manager with Easy Arrange.	Dell Display and Peripheral Manager (Easy Arrange)
Certifications
Certifications	ENERGY STAR and TCO Certified Displays; EPEAT registration varies by market.	TÜV Rheinland Eye Comfort 3.0 (5 star), TÜV Rheinland hardware low blue light
Warranty
Warranty	Dell's brochure specifies three years of Advanced Exchange Service and limited hardware warranty; regional terms may differ.	3 years limited hardware with Advanced Exchange Service and Premium Panel Exchange (UK)
In the box
In the box	Stand, power cable, DisplayPort cable, USB-C to USB-C cable, USB-C to USB-A cable, factory calibration report and documentation for U2720Q. The U2720QM package instead includes HDMI, according to Dell's user guide.	Stand, power cable, DisplayPort 1.4 cable (1.8 m), HDMI cable (1.8 m), Thunderbolt 4 passive cable (1 m), USB-A to USB-C cable (1 m), factory calibration report