Apple Cinema Display (20-inch, ADC) vs Apple LED Cinema Display (27-inch)

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Cinema Display (20-inch, ADC) compared with LED Cinema Display (27-inch)

	AppleCinema Display (20-inch, ADC)	AppleLED Cinema Display (27-inch)
Overview
Released
Released	January 2003	September 2010
Display
Screen size
Screen size	20″	27″
Resolution
Resolution	1680 × 1050	2560 × 1440 (QHD) (better)
Sharpness
Sharpness	99 pixels per inch	109 pixels per inch (better)
Panel
Panel	IPS (TFT active-matrix LCD (Apple); S-IPS identification from PRAD's exact ADC model datasheet)	IPS
Refresh rate
Refresh rate	–	60 Hz
Brightness (typical)
Brightness (typical)	230 nits	375 nits (better)
Contrast ratio
Contrast ratio	350:1	1,000:1
Screen finish
Screen finish	Matte	Glossy
Shape
Shape	Flat	Flat
Colour depth
Colour depth	Up to 16.7 million colours; Apple does not specify panel bit depth	Up to 16.7 million colours; panel bit depth is not specified
Response time detail
Response time detail	–	Typical 12 ms without a specified transition; omitted from the grey-to-grey row
Viewing angles
Viewing angles	170° horizontally and vertically	178° horizontally and vertically
Eye care
Eye care	–	Ambient light sensor adjusts brightness automatically
Pixel pitch
Pixel pitch	0.258 mm	–
Connections
Video inputs
Video inputs	Apple Display Connector	Mini DisplayPort
USB-C charging
USB-C charging	None	None
USB ports
USB ports	2 × USB-A	3 × USB-A
Speakers
Speakers	No	Yes
Webcam
Webcam	–	iSight camera with microphone
DisplayPort detail
DisplayPort detail	–	Captive Mini DisplayPort cable; audio support depends on the host Mac
Other connections
Other connections	Captive ADC connector carries digital video, USB data and power; no separate power cord for an ADC-equipped Mac	–
USB hub detail
USB hub detail	Two-port self-powered USB hub	Three powered USB 2.0 Type-A ports; upstream USB cable required for data, camera, microphone and speakers. Device charging works without a host connected.
Speaker detail
Speaker detail	–	Built-in 2.1 system with 49 W output
Webcam detail
Webcam detail	–	Built-in iSight; maker specifications do not publish a megapixel figure
Design
Stand adjusts
Stand adjusts	Tilt	Tilt
VESA mount
VESA mount	No	Yes
Weight with stand
Weight with stand	8.6 kg	10.7 kg
VESA pattern
VESA pattern	–	Requires the separately sold Apple VESA Mount Adapter Kit
Size with stand
Size with stand	542 × 439 × 176 mm minimum depth; maximum depth 265 mm (width × height × depth)	Current UK specifications give 650 × 491 × 207 mm (width × height × depth). Original manual gives 651.7 × 488.1 × 208.13 mm; both give 10.7 kg.
Controls
Controls	System power, sleep and wake; display preferences launch button and software brightness control	Brightness, colour profile and calibration through Mac OS X Displays preferences; no physical image controls (Macworld)
Colours
Colours	Crystal-clear acrylic enclosure with silver bezel	Aluminium enclosure with black glass bezel
Power and support
Power use
Power use	Maximum 60 W when operating; energy saver mode 3 W or less	Maximum 250 W while charging a MacBook Pro; energy saver 1 W or less
Power supply
Power supply	24.5–28 V DC through ADC	Internal power supply; 100–240 V AC, 50–60 Hz
Laptop charging
Laptop charging	–	Separate captive universal MagSafe connector supplies up to 85 W; no USB-C power delivery
Software
Software	Mac OS X 10.2 or later; specified Power Mac G4 graphics cards, or DVI-equipped PowerBook G4 with Apple DVI to ADC Adapter. Apple UK confirms immediate availability on 28 January 2003. Native refresh is not specified in the read original Apple documentation; PRAD lists 60 Hz, not promoted into the main row.	Original requirement Mac with Mini DisplayPort and Mac OS X 10.6.4 or later. July 2010 announcement specifies September availability.
Certifications
Certifications	–	ENERGY STAR 5.0; EPEAT Gold in the US, Canada, France, Germany and UK
In the box
In the box	–	Display, AC power cord and printed documentation