Dell UltraSharp 27 4K Thunderbolt Hub (U2725QE) vs Dell UltraSharp 40 Curved Thunderbolt Hub (U4025QW)

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UltraSharp 27 4K Thunderbolt Hub (U2725QE) compared with UltraSharp 40 Curved Thunderbolt Hub (U4025QW)

	DellUltraSharp 27 4K Thunderbolt Hub (U2725QE)	DellUltraSharp 40 Curved Thunderbolt Hub (U4025QW)
Overview
Released
Released	February 2025	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 Black)	IPS (IPS Black)
Refresh rate
Refresh rate	120 Hz	120 Hz
Response time (grey to grey)
Response time (grey to grey)	5 ms	5 ms
Brightness (typical)
Brightness (typical)	450 nits	450 nits
HDR peak brightness
HDR peak brightness	–	600 nits
HDR certification
HDR certification	DisplayHDR 600	DisplayHDR 600
Contrast ratio
Contrast ratio	3,000:1	2,000:1
Colour range
Colour range	99% DCI-P3	99% DCI-P3, 99% Display P3, 100% sRGB
DCI-P3 coverage
DCI-P3 coverage	99%	99%
Colour accuracy (Delta E)
Colour accuracy (Delta E)	Below 1.5 (better)	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	100% (CIE 1931)	100%
Colour accuracy
Colour accuracy	Delta E < 1.5 (average) (sRGB, BT.709, DCI-P3, Display P3)	Delta E < 2 (average) (DCI-P3, Display P3, sRGB, BT.709); factory calibration report in the box
HDR detail
HDR detail	600 cd/m² HDR peak	600 cd/m² HDR peak; HDR static metadata over HDMI
Response time detail
Response time detail	5 ms (Fast mode), 8 ms (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, 178° vertical (typical)	178° horizontal, 178° vertical (typical)
Pixel pitch
Pixel pitch	0.1554 mm x 0.1554 mm	0.1815 mm x 0.1815 mm
Eye care
Eye care	ComfortView Plus (blue light ≤35%), TÜV Rheinland Eye Comfort 3.0 5-star, flicker-free, ambient light sensor with Auto Brightness	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 2.1, DisplayPort 1.4, Thunderbolt 4	HDMI 2.1, DisplayPort 1.4, Thunderbolt 4
USB-C charging
USB-C charging	Up to 140 W	Up to 140 W
USB ports
USB ports	2 × USB-C, 5 × USB-A, Thunderbolt 4	2 × USB-C, 5 × USB-A, Thunderbolt 4
KVM switch
KVM switch	–	Yes
Ethernet
Ethernet	Yes	Yes
Speakers
Speakers	No	Yes
HDMI detail
HDMI detail	1 x HDMI, up to 3840 x 2160 at 120 Hz FRL with VRR as specified in HDMI 2.1; no ARC/eARC or ALLM	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	1 x DisplayPort 1.4 in with DSC (DRR for Microsoft Windows); 1 x DisplayPort 1.4 out	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	Thunderbolt 4 upstream (DisplayPort 1.4 with DSC, Power Delivery 140 W); USB-C 10Gbps upstream for KVM; 2 x USB-C 10Gbps downstream in the quick access ports	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 (15 W) or DisplayPort 1.4 out	Thunderbolt 4 downstream port (video and data, 15 W)
USB hub detail
USB hub detail	4 x USB-A 10Gbps; quick access ports with 1 x USB-A 10Gbps (BC 1.2) and 2 x USB-C 10Gbps	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 analog 2.0 audio line out	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	7.06 kg	12.22 kg
Height adjustment
Height adjustment	150 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 x 100 mm	100 x 100 mm
Size with stand
Size with stand	612.44 x 189.00 x 385.68–535.68 mm (W x D x H)	946.62 x 252.80 x 472.32–622.32 mm (W x D x H)
Size without stand
Size without stand	612.44 x 55.60 x 353.51 mm (W x D x H)	946.62 x 108.04 x 419.14 mm (W x D x H)
Weight without stand
Weight without stand	5.22 kg	8.35 kg
Colours
Colours	Silver	–
Power and support
Power use
Power use	25.4 W on mode, 0.5 W standby, 1.5 W networked standby, 0.3 W off, 325 W maximum	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 VAC, 50/60 Hz, 4 A (maximum)	100–240 VAC, 50/60 Hz, 4.2 A (typical)
Software
Software	Dell Display and Peripheral Manager (Easy Arrange)	Dell Display and Peripheral Manager (Easy Arrange)
Certifications
Certifications	ENERGY STAR, EPEAT Gold with Climate+, TCO Certified, TCO Certified Edge, TÜV Rheinland Eye Comfort 3.0 (5 star)	ENERGY STAR, TCO Certified Edge, TÜV Rheinland Eye Comfort 3.0 (5 star)
Warranty
Warranty	3 years limited hardware with Advanced Exchange Service (UK)	3 years limited hardware (UK)
In the box
In the box	Stand, power cable, DisplayPort cable (1.8 m), USB-A to USB-C upstream cable (1 m), Thunderbolt 4 passive cable (1 m)	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