Apple Thunderbolt Display vs Dell UltraSharp U2715H

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Thunderbolt Display compared with UltraSharp U2715H

	AppleThunderbolt Display	DellUltraSharp U2715H
Overview
Released
Released	September 2011	2014
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
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 3
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	16.78 million colours
sRGB coverage
sRGB coverage	–	99%
Colour accuracy
Colour accuracy	–	Factory calibrated to average Delta E ≤ 3.
Response time detail
Response time detail	Apple specifies 12 ms without identifying the transition; omitted from the grey-to-grey row	6 ms grey-to-grey in Fast mode; 8 ms in Normal mode (Dell). TFTCentral found Fast introduced overshoot on its sample.
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	Analogue backlight dimming for a flicker-free display, according to Dell.
Connections
Video inputs
Video inputs	Thunderbolt	2 × HDMI 1.4, 2 × DisplayPort 1.2
USB-C charging
USB-C charging	None	None
USB ports
USB ports	3 × USB-A	5 × USB-A
Ethernet
Ethernet	Yes	–
Speakers
Speakers	Yes	No
HDMI detail
HDMI detail	–	Two HDMI 1.4 inputs with MHL 2.0 support.
DisplayPort detail
DisplayPort detail	–	One DisplayPort 1.2 input, one Mini DisplayPort input and one DisplayPort 1.2 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 1.2 MST output; Dell lists one additional QHD 60 Hz display or two lower-resolution displays.
USB hub detail
USB hub detail	Three powered USB 2.0 Type-A ports; device charging can work without a host attached	Five downstream USB 3.0 Type-A ports and one upstream USB 3.0 Type-B port; one downstream port supports BC 1.2 charging.
Audio out
Audio out	–	Audio line out for external speakers; Dell says it does not support headphones.
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
Height adjustment
Height adjustment	–	115 mm.
Weight with stand
Weight with stand	10.8 kg	–
Tilt
Tilt	Tilt adjustment only; no height, swivel or pivot adjustment (Macworld)	-5° to 21°.
Swivel
Swivel	–	-45° to 45°.
Pivot
Pivot	–	-90° to 90°.
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.	612.7 × 205.0 × 409.9–524.9 mm (width × depth × height).
Size without stand
Size without stand	–	612.7 × 46.4 × 363.4 mm (width × depth × height).
Weight without stand
Weight without stand	–	4.91 kg, without cables.
Controls
Controls	Brightness and colour profile through macOS Displays preferences; no on-screen menu or physical image controls (Macworld)	Touch-sensitive front buttons and on-screen display.
Colours
Colours	Aluminium enclosure with black glass bezel	Black front frame and silver stand.
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.	36 W typical, 88 W maximum with USB active; less than 0.5 W in standby.
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.	Dell Display Manager.
Certifications
Certifications	ENERGY STAR 5.1; EPEAT Gold in the US and Canada	EPEAT Gold and TCO Certified Displays, according to Dell.
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	Stand, power cable, Mini DisplayPort-to-DisplayPort cable, USB 3.0 upstream cable, factory calibration report and documentation.