Apple Thunderbolt Display vs Dell UltraSharp U2711

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Thunderbolt Display compared with UltraSharp U2711

	AppleThunderbolt Display	DellUltraSharp U2711
Overview
Released
Released	September 2011	2010
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 (CCFL-backlit wide-gamut 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	–	100% sRGB; 96% Adobe RGB
Colour accuracy (Delta E)
Colour accuracy (Delta E)	–	Below 5
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	Up to 1.07 billion colours with 12-bit internal processing, according to Dell.
sRGB coverage
sRGB coverage	–	100% typical, according to Dell.
Adobe RGB coverage
Adobe RGB coverage	–	96% typical, according to Dell.
Colour accuracy
Colour accuracy	–	Factory-calibrated sRGB and Adobe RGB presets to average Delta E below 5 on a new unit, according to Dell.
Colour modes
Colour modes	–	Includes sRGB, Adobe RGB and a six-axis Custom Color mode.
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 or 12 ms black-to-white, typical.
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, DisplayPort
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; Dell lists up to 1080p video modes in its manual.
DisplayPort detail
DisplayPort detail	–	One DisplayPort input; also two dual-link DVI-D inputs, VGA, composite and component video.
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.	–
USB hub detail
USB hub detail	Three powered USB 2.0 Type-A ports; device charging can work without a host attached	Four downstream USB 2.0 ports and one upstream port; integrated multi-format card reader.
Picture by picture
Picture by picture	–	Picture-in-picture and picture-by-picture modes with a second video source.
Audio out
Audio out	–	Audio line out for external speakers; optional Dell soundbar support.
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 (better)
VESA mount
VESA mount	Yes	Yes
Weight with stand
Weight with stand	10.8 kg	7.72 kg
Height adjustment
Height adjustment	–	90 mm vertical extension, according to Dell.
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.	646.71 × 199.95 × 427.83–517.83 mm (width × depth × height).
Size without stand
Size without stand	–	646.71 × 93 × 385.67 mm (width × depth × height).
Weight without stand
Weight without stand	–	7.72 kg without cables.
Controls
Controls	Brightness and colour profile through macOS Displays preferences; no on-screen menu or physical image controls (Macworld)	Capacitive touch controls at the front right.
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.	113 W typical, according to Dell's manual.
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	–
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	Monitor and stand, power, VGA, DVI, DisplayPort and USB upstream cables, documentation and factory colour report.