Apple Thunderbolt Display vs Dell UltraSharp U2717D

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Thunderbolt Display compared with UltraSharp U2717D

	AppleThunderbolt Display	DellUltraSharp U2717D
Overview
Released
Released	September 2011	2016
Display
Screen size
Screen size	27″	27″
Resolution
Resolution	2560 × 1440 (QHD)	2560 × 1440 (QHD)
Sharpness
Sharpness	109 pixels per inch	109 pixels per inch
Panel
Panel	IPS	IPS (LED-backlit IPS-type LCD; TFTCentral identified a Samsung PLS panel in its sample.)
Refresh rate
Refresh rate	60 Hz	60 Hz
Response time (grey to grey)
Response time (grey to grey)	–	6 ms
Brightness (typical)
Brightness (typical)	375 nits (better)	350 nits
Contrast ratio
Contrast ratio	1,000:1	1,000:1
Colour range
Colour range	–	99% sRGB
Colour accuracy (Delta E)
Colour accuracy (Delta E)	–	Below 2
Screen finish
Screen finish	Glossy	Matte
Shape
Shape	Flat	Flat
Colour depth
Colour depth	Up to 16.7 million colours; Apple does not specify panel bit depth	16.7 million colours, according to Dell.
sRGB coverage
sRGB coverage	–	99% typical, according to Dell.
Colour accuracy
Colour accuracy	–	Factory calibrated to average Delta E < 2, according to Dell.
Response time detail
Response time detail	Apple specifies 12 ms without identifying the transition; omitted from the grey-to-grey row	8 ms grey-to-grey in Normal mode; 6 ms in Fast mode, according to Dell.
Viewing angles
Viewing angles	178° horizontally and vertically	178° horizontal and vertical, typical.
Pixel pitch
Pixel pitch	–	0.2331 mm.
Eye care
Eye care	Ambient light sensor automatically adjusts brightness	–
Connections
Video inputs
Video inputs	Thunderbolt	HDMI, 2 × DisplayPort 1.2
USB-C charging
USB-C charging	None	None
USB ports
USB ports	3 × USB-A	4 × USB-A
Ethernet
Ethernet	Yes	–
Speakers
Speakers	Yes	No
HDMI detail
HDMI detail	–	One HDMI input with MHL support.
DisplayPort detail
DisplayPort detail	–	One DisplayPort input, one Mini DisplayPort input and one DisplayPort MST output.
Webcam
Webcam	FaceTime HD camera with microphone	–
Thunderbolt detail
Thunderbolt detail	Captive first-generation Thunderbolt input cable; two bidirectional 10 Gbps channels. Requires a Thunderbolt-equipped Mac, not a Mini DisplayPort-only Mac.	–
Other connections
Other connections	Gigabit Ethernet (10/100/1000Base-T), FireWire 800 with up to 7 W power, downstream Thunderbolt port and Kensington security slot	–
Daisy chaining
Daisy chaining	Downstream 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 supports one additional 2560 × 1440 60 Hz monitor, according to Dell.
USB hub detail
USB hub detail	Three powered USB 2.0 Type-A ports; device charging can work without a host attached	Four USB 3.0 downstream Type-A ports and one upstream port; one downstream port supports BC 1.2 charging.
Audio out
Audio out	–	Stereo audio line out for speakers; Dell says headphones are unsupported.
Speaker detail
Speaker detail	Built-in 2.1 speaker system with 49 W output	–
Webcam detail
Webcam detail	FaceTime HD camera and microphone; Apple does not publish a megapixel figure in the specifications	–
Design
Stand adjusts
Stand adjusts	Tilt	Height, tilt, swivel, pivot (better)
VESA mount
VESA mount	Yes	Yes
Weight with stand
Weight with stand	10.8 kg	4.5 kg
Height adjustment
Height adjustment	–	130 mm.
Tilt
Tilt	Tilt adjustment only; no height, swivel or pivot adjustment (Macworld)	–
VESA pattern
VESA pattern	Requires the separately sold Apple VESA Mount Adapter Kit	100 × 100 mm.
Size with stand
Size with stand	Current 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.	611.3 × 200.3 × 410.2–540.2 mm (width × depth × height).
Size without stand
Size without stand	–	611.3 × 48.3 × 355.6 mm (width × depth × height).
Weight without stand
Weight without stand	–	4.5 kg, without cables.
Controls
Controls	Brightness and colour profile through macOS Displays preferences; no on-screen menu or physical image controls (Macworld)	–
Colours
Colours	Aluminium enclosure with black glass bezel	–
Power and support
Power use
Power use	Maximum 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.	26 W typical, 74 W maximum with USB active, according to Dell.
Power supply
Power supply	Internal power supply; 100–240 V AC, 50–60 Hz	100–240 V AC, 50/60 Hz.
Laptop charging
Laptop charging	Captive Universal MagSafe connector supplies up to 85 W separately from the Thunderbolt cable; no USB-C power delivery	–
Software
Software	Original 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.	–
Certifications
Certifications	ENERGY STAR 5.1; EPEAT Gold in the US and Canada	ENERGY STAR and TCO Certified Displays; EPEAT registration varies by country.
Warranty
Warranty	One-year limited warranty and 90 days of telephone support	–
In the box
In the box	Thunderbolt Display, AC power cord and printed documentation	–