Dell UltraSharp 27 4K USB-C Monitor (U2720Q) vs Dell UltraSharp 40 Curved Thunderbolt Hub (U4025QW)

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UltraSharp 27 4K USB-C Monitor (U2720Q) compared with UltraSharp 40 Curved Thunderbolt Hub (U4025QW)

	DellUltraSharp 27 4K USB-C Monitor (U2720Q)	DellUltraSharp 40 Curved Thunderbolt Hub (U4025QW)
Overview
Released
Released	January 2020	January 2024
Display
Screen size
Screen size	27″	39.7″
Resolution
Resolution	3840 × 2160 (4K)	5120 × 2160 (5K2K) (better)
Sharpness
Sharpness	163 pixels per inch (better)	140 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	450 nits (better)
HDR peak brightness
HDR peak brightness	–	600 nits
HDR certification
HDR certification	DisplayHDR 400	DisplayHDR 600
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	99% DCI-P3, 99% Display P3, 100% sRGB
DCI-P3 coverage
DCI-P3 coverage	95%	99% (better)
Colour accuracy (Delta E)
Colour accuracy (Delta E)	Below 2	Below 2
Screen finish
Screen finish	Matte	Matte
Shape
Shape	Flat	Curved (2500R)
Adaptive sync
Adaptive sync	–	HDMI VRR
Colour depth
Colour depth	1.07 billion colours.	1.07 billion colours (8-bit + A-FRC)
sRGB coverage
sRGB coverage	99%	100%
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.	600 cd/m² HDR peak; HDR static metadata over HDMI
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 (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.	0.1815 mm x 0.1815 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; flicker-free
Connections
Video inputs
Video inputs	HDMI 2.0, DisplayPort 1.4, USB-C	HDMI 2.1, DisplayPort 1.4, Thunderbolt 4
USB-C charging
USB-C charging	Up to 90 W	Up to 140 W (better)
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, up to 5120 x 2160 at 120 Hz FRL with HDR static metadata and VRR as specified in HDMI 2.1
DisplayPort detail
DisplayPort detail	One DisplayPort 1.4 input.	1 x DisplayPort 1.4 (HDCP 2.3), up to 5120 x 2160 at 120 Hz with HDR and DSC; internal MST (Screen Partition) over DisplayPort and Thunderbolt 4
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 (DisplayPort 1.4 Alt Mode, USB 10Gbps, Power Delivery up to 140 W EPR); 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, with KVM switching
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 9 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	12.22 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).	946.62 x 252.80 x 472.32–622.32 mm (W x D x H)
Size without stand
Size without stand	611.3 × 49.7 × 356.0 mm (width × depth × height).	946.62 x 108.04 x 419.14 mm (W x D x H)
Weight without stand
Weight without stand	4.4 kg.	8.35 kg
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.	39.5 W on mode, 0.4 W standby, 1.8 W networked standby, 0.3 W off, 380 W maximum
Energy class
Energy class	–	F
Power supply
Power supply	100–240 V AC, 50/60 Hz.	100–240 VAC, 50/60 Hz, 4.2 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.	ENERGY STAR, TCO Certified Edge, TÜV Rheinland Eye Comfort 3.0 (5 star)
Warranty
Warranty	Dell's brochure specifies three years of Advanced Exchange Service and limited hardware warranty; regional terms may differ.	3 years limited hardware (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 2.1 cable (1.8 m), Thunderbolt 4 active cable (1.5 m), USB-A to USB-C cable (1 m), factory calibration report