Apple Thunderbolt Display vs Dell UltraSharp 27 USB-C Monitor (U2719DC)

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

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Thunderbolt Display compared with UltraSharp 27 USB-C Monitor (U2719DC)
AppleThunderbolt DisplayDellUltraSharp 27 USB-C Monitor (U2719DC)
Overview
ReleasedSeptember 2011October 2018
Display
Screen size27″27″
Resolution2560 × 1440 (QHD)2560 × 1440 (QHD)
Sharpness109 pixels per inch109 pixels per inch
PanelIPSIPS
Refresh rate60 Hz60 Hz
Response time (grey to grey)–5 ms
Brightness (typical)375 nits (better)350 nits
Contrast ratio1,000:11,000:1
Colour range–99% sRGB, 99% Rec.709, 85% DCI-P3
DCI-P3 coverage–85%
Colour accuracy (Delta E)–Below 2
Screen finishGlossyMatte
ShapeFlatFlat
Colour depthUp to 16.7 million colours; Apple does not specify panel bit depth16.7 million colours
sRGB coverage–99% sRGB and 99% Rec.709 claimed by Dell
Response time detailApple specifies 12 ms without identifying the transition; omitted from the grey-to-grey row5 ms Fast, 8 ms Normal, grey-to-grey
Viewing angles178° horizontally and vertically178° horizontal and vertical
Pixel pitch–0.233 mm
Eye careAmbient light sensor automatically adjusts brightnessFlicker-free panel and ComfortView low-blue-light mode
Calibration–Factory average Delta E below 2, according to Dell
Connections
Video inputsThunderboltHDMI, DisplayPort 1.4, USB-C
USB-C chargingNoneUp to 65 W (better)
USB ports3 × USB-A4 × USB-A
KVM switch–No
EthernetYesNo
SpeakersYesNo
DisplayPort detail–One DisplayPort 1.4 input and one DisplayPort output with MST support.
USB-C detail–USB-C upstream carries DisplayPort 1.4 video and USB 3.1 data, with up to 65 W Power Delivery.
WebcamFaceTime HD camera with microphone–
Thunderbolt detailCaptive first-generation Thunderbolt input cable; two bidirectional 10 Gbps channels. Requires a Thunderbolt-equipped Mac, not a Mini DisplayPort-only Mac.–
Other connectionsGigabit Ethernet (10/100/1000Base-T), FireWire 800 with up to 7 W power, downstream Thunderbolt port and Kensington security slot–
Daisy chainingDownstream Thunderbolt supports compatible devices and a second Thunderbolt Display where the Mac permits it. The port does not directly support Mini DisplayPort, DVI or VGA displays or adapters.DisplayPort MST output for one additional 2560 × 1440 60 Hz display when connected over DisplayPort, according to Dell.
USB hub detailThree powered USB 2.0 Type-A ports; device charging can work without a host attachedTwo standard USB 3.0 downstream ports and two USB 3.0 downstream ports with BC 1.2 charging at up to 2 A.
Audio out–3.5 mm audio line output
Speaker detailBuilt-in 2.1 speaker system with 49 W output–
Webcam detailFaceTime HD camera and microphone; Apple does not publish a megapixel figure in the specifications–
Design
Stand adjustsTiltHeight, tilt, swivel, pivot (better)
VESA mountYesYes
Height adjustment–130 mm
Weight with stand10.8 kg–
TiltTilt adjustment only; no height, swivel or pivot adjustment (Macworld)-5° to 21°
Swivel–-40° to 40°
VESA patternRequires the separately sold Apple VESA Mount Adapter Kit100 × 100 mm
Size with standCurrent UK support specifications give 650 × 491 × 207 mm (width × height × depth). The original manual gives 651.7 × 488.1 × 208.13 mm and 10.7 kg rather than the support page's 10.8 kg.612.2 × 180 × 390.2–520.2 mm (W × D × H)
Size without stand–612.2 × 39 × 355 mm (W × D × H)
Weight without stand–4.19 kg
ControlsBrightness and colour profile through macOS Displays preferences; no on-screen menu or physical image controls (Macworld)–
ColoursAluminium enclosure with black glass bezel–
Power and support
Power useMaximum 250 W while charging a MacBook Pro; energy saver 2 W or less. Apple environmental report at 230 V gives 108 W on at full brightness, 1.9 W sleep and 0.75 W off.33.2 W typical, 160 W maximum, below 0.3 W in standby or off
Power supplyInternal power supply; 100–240 V AC, 50–60 Hz100–240 V AC, 50–60 Hz
Laptop chargingCaptive Universal MagSafe connector supplies up to 85 W separately from the Thunderbolt cable; no USB-C power delivery–
SoftwareOriginal requirement OS X 10.6.8 or later and a Thunderbolt-equipped Mac. Announced 20 July 2011 with availability within 60 days; September sale month follows contemporary MacRumors reports of customer shipments, rather than the announcement date.Dell Display Manager
CertificationsENERGY STAR 5.1; EPEAT Gold in the US and CanadaENERGY STAR and TCO Certified; EPEAT registration varies by country
WarrantyOne-year limited warranty and 90 days of telephone support–
In the boxThunderbolt Display, AC power cord and printed documentationStand, DisplayPort cable, USB-C cable and factory calibration report

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