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Dell UltraSharp 32 4K QD-OLED (U3226Q) vs Dell UltraSharp 40 Curved Thunderbolt Hub (U4025QW)

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

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DellUltraSharp 32 4K QD-OLED (U3226Q)DellUltraSharp 40 Curved Thunderbolt Hub (U4025QW)
Overview
ReleasedFebruary 2026January 2024
Display
Screen size31.5″39.7″
Resolution3840 × 2160 (4K)5120 × 2160 (5K2K)
Sharpness140 pixels per inch140 pixels per inch
PanelQD-OLEDIPS (IPS Black)
Refresh rate120 Hz120 Hz
Response time (grey to grey)0.03 ms5 ms
Brightness (typical)300 nits450 nits
HDR peak brightness1,000 nits600 nits
HDR certificationDisplayHDR True Black 500DisplayHDR 600
HDR formatsHDR10 (PQ), HLG, Dolby Vision–
Contrast ratio1,500,000:12,000:1
Colour range99% DCI-P3, 99% Display P3, 94% Adobe RGB, 100% sRGB99% DCI-P3, 99% Display P3, 100% sRGB
DCI-P3 coverage99%99%
Colour accuracy (Delta E)Below 1Below 2
Screen finishMatteMatte
ShapeFlatCurved (2500R)
Adaptive syncHDMI VRRHDMI VRR
Colour depth1.07 billion colours1.07 billion colours (8-bit + A-FRC)
sRGB coverage100% (CIE 1931)100%
Adobe RGB coverage94% (CIE 1931)–
Colour accuracyDelta E < 1 (average) (DCI-P3 DCI, Display P3 D65, sRGB D65, BT.709 D65); Delta E < 2 (average) (Adobe RGB D65 and D50); HDR Delta E ITP < 3.5 (PQ, HLG)Delta E < 2 (average) (DCI-P3, Display P3, sRGB, BT.709); factory calibration report in the box
Colour modesNative, DCI-P3 DCI, Display P3 D65, sRGB D65, BT.709 D65, Adobe RGB D65 and D50, User 1–3, CAL 1–3; HDR PQ 1000 nits, HLG 1000 nits, DisplayHDR True Black 500, Dolby Vision Bright and Dark–
HDR detail1000 cd/m² HDR peak at 3% APL; 80% BT.2020, 99% Display P3600 cd/m² HDR peak; HDR static metadata over HDMI
Response time detail–5 ms (Fast), 8 ms (Normal)
Variable refresh range48–120 Hz (vertical scan range)48–120 Hz (vertical scan range)
Viewing angles178° horizontal, 178° vertical (typical)178° horizontal, 178° vertical (typical)
Pixel pitch0.1814 mm x 0.1814 mm0.1815 mm x 0.1815 mm
Eye careComfortView Plus hardware low blue light; TÜV Rheinland Eye Comfort 3.0 (4 star); flicker-freeComfortView Plus hardware low blue light; TÜV Rheinland Eye Comfort 3.0 (5 star); ambient light sensor; flicker-free
CalibrationBuilt-in colorimeter; calibration stored in CAL 1–3; Dell Color Management and Dell Color Management Console software–
Connections
Video inputs2 × HDMI 2.1, DisplayPort 1.4, Thunderbolt 4HDMI 2.1, DisplayPort 1.4, Thunderbolt 4
USB-C chargingUp to 140 WUp to 140 W
USB ports2 × USB-C, 3 × USB-A, Thunderbolt 42 × USB-C, 5 × USB-A, Thunderbolt 4
KVM switchYesYes
EthernetYesYes
SpeakersNoYes
HDMI detail2 x HDMI 2.1 (HDCP 1.4 & 2.2), up to 3840 x 2160 at 120 Hz FRL with VRR1 x HDMI, up to 5120 x 2160 at 120 Hz FRL with HDR static metadata and VRR as specified in HDMI 2.1
DisplayPort detail1 x DisplayPort 1.4 (HDCP 1.4 & 2.2), up to 3840 x 2160 at 120 Hz with DSC1 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 detailThunderbolt 4 upstream (DisplayPort 1.4 Alt Mode, Power Delivery up to 140 W EPR); USB-C 10Gbps upstream (data only); 2 x USB-C 10Gbps downstream quick-access ports (up to 27 W)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 chainingThunderbolt 4 downstream port (video and data, 15 W)Thunderbolt 4 downstream port (video and data, 15 W)
USB hub detail2 x USB-A 10Gbps rear; quick access ports with 1 x USB-A 10Gbps (BC 1.2) and 2 x USB-C 10Gbps (27 W)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 picturePicture by Picture and Picture in Picture, with separate colour settings and SDR/HDR per sourcePicture by Picture and Picture in Picture, with KVM switching
Audio out–3.5 mm audio line out
Speaker detail–2 x 9 W
Design
Stand adjustsHeight, tilt, swivel, pivotHeight, tilt, swivel
VESA mountYesYes
Weight with stand9.84 kg12.22 kg
Height adjustment150 mm150 mm
Tilt-5° to 21°-5° to 21°
Swivel-30° to 30°-30° to 30°
Pivot-90° to 90°–
VESA pattern100 x 100 mm100 x 100 mm
Size with stand718.28 x 217.16 x 473.77–623.77 mm (W x D x H)946.62 x 252.80 x 472.32–622.32 mm (W x D x H)
Size without stand718.28 x 65.48 x 436.00 mm (W x D x H)946.62 x 108.04 x 419.14 mm (W x D x H)
Weight without stand6.43 kg8.35 kg
ControlsJoystick and programmable direct keys–
ColoursBlack–
Power and support
Power use33.7 W on mode, 0.4 W standby, 1.9 W networked standby, 0.3 W off, 460 W maximum39.5 W on mode, 0.4 W standby, 1.8 W networked standby, 0.3 W off, 380 W maximum
Energy classGF
Power supply100–240 VAC, 50/60 Hz, 5.3 A (typical)100–240 VAC, 50/60 Hz, 4.2 A (typical)
SoftwareDell Display and Peripheral Manager (Easy Arrange), Dell Color Management, Dell Color Management ConsoleDell Display and Peripheral Manager (Easy Arrange)
CertificationsTÜV Rheinland Eye Comfort 3.0 (4 star), TÜV Rheinland hardware low blue light (Category 2)ENERGY STAR, TCO Certified Edge, TÜV Rheinland Eye Comfort 3.0 (5 star)
Warranty3 years limited hardware with Advanced Exchange Service and Premium Panel Exchange, including burn-in (UK)3 years limited hardware (UK)
In the boxStand, monitor hood, power cable, HDMI 2.1 cable (1.8 m), DisplayPort 1.4 cable (1.8 m), Thunderbolt 4 40Gbps 240 W active cable (2 m), USB-C to USB-A 10Gbps cable (1 m), microfibre clothStand, 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

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