iMac (Intel-based)

iMac (Intel based)
	File:IMac Retina 5K.png iMac (Intel based)
Developer	Apple Inc.
Type	All-in-one
Release date	June 5, 2017; 7 years ago (current model); January 10, 2006 (original release)
Operating system	macOS
CPU	Intel Core i5, Intel Core i7 (current model); Intel Core Duo (original release)
Related	Mac Mini, Mac Pro
Website	www.apple.com/imac

The iMac is a series of Macintosh desktop computers offered by Apple Inc. The current Apple iMac features either an Intel Core i5 or Core i7 processor, Intel Iris, Nvidia GeForce 700 Series, or AMD Radeon R9 M200 Series graphics cards, and a choice of either a 21.5" or 27" LED-LCD display.

Previous iMac models featured either a white polycarbonate enclosure or an aluminium enclosure. The October 2009 iMac model featured a unibody aluminium enclosure, a version of which can still be seen on the current model. The current iMacs released in October 2012 also feature a much thinner display, with the edge measuring just 5 mm.^[1]

History

At the Macworld Conference and Expo on January 10, 2006, Steve Jobs announced that the new iMac would be the first Macintosh to use an Intel CPU, the Core Duo. The introduction of the new iMac along with the Intel-based MacBook Pro signaled the start of a six-month transition from PowerPC to Intel processors.

The features, price, and case design remained unchanged from the iMac G5. The processor speed, however, according to tests run by Apple using SPEC,^[2] was declared to be two to three times faster than the iMac G5.

Polycarbonate iMac

Alongside the MacBook Pro, the iMac Core Duo represents Apple's first computer to feature Intel processors instead of PowerPC processors, a transition that completed in November 2006. Since the introduction of the iMac Core Duo, other lines have followed, including the introduction of the Intel Core-powered Mac mini on February 28, 2006, the MacBook consumer line of laptop computers on May 16, 2006, the Mac Pro on August 7, 2006, and the Xserve in November 2006, completing the Macintosh family transition to Intel processors.

In early February 2006, Apple confirmed reports of video display problems on the new Intel-based iMacs. When playing video on Apple's Front Row media browser, some 20-inch iMacs (those built-to-order with upgraded video cards) showed random horizontal lines, ghosting, video tearing and other problems. The problem was fixed with a software update.

In late 2006, Apple introduced a new version of the iMac which included a Core 2 Duo chip and a lower price. Apple added a new 24-inch model with IPS-display and a resolution of 1920 × 1200 (WUXGA), making it the first iMac to be able to display 1080p content in its full resolution, and a VESA Flat Display Mounting Interface. Except for the 17-inch 1.83 GHz processor model, this version also included an 802.11n draft card.^[3]

Specifications of polycarbonate iMacs from 2006 through 2007
Component / Processor model	Intel Core Duo			Intel Core 2 Duo
Model	Early 2006^[4]		Mid 2006^[5]	Late 2006^[6]
Release date	January 10, 2006^[7]		July 5, 2006^[8]	September 6, 2006^[9]
Marketing Model No.^[10]^[11]^[12]	MA199xx/A	MA200xx/A	MA406xx/A	MA710xx/A	MA590xx/A	MA589xx/A	MA456xx/A
Model Number	A1173	A1174	A1195		A1208	A1207	A1200
Model Identifier^[12]	iMac4,1		iMac4,2	iMac5,2	iMac5,1		iMac6,1
EMC No.	2104	2105	2110	2124	2114	2118	2111
Enclosure	White polycarbonate
Display	17", 1440 × 900	20", 1680 × 1050	17", 1440 × 900			20", 1680 × 1050	24", 1920 × 1200 IPS LG Phillips, LM240WU2-SLA1
Display	widescreen 16:10, matte display
Processor	1.83GHz (T2400 "Yonah") Intel Core Duo 2MB on-chip L2 cache			1.83GHz (T5600 "Merom") Intel Core 2 Duo 2MB on-chip L2 cache	2.0GHz (T7200 "Merom") Intel Core 2 Duo 4MB on-chip L2 cache	2.16GHz (T7400 "Merom") Intel Core 2 Duo 4MB on-chip L2 cache
Processor	Optional: 2.0GHz (T2500 "Yonah") Intel Core Duo			—	Optional: 2.16GHz (T7400 "Merom") Intel Core 2 Duo	Optional: 2.33GHz (T7600 "Merom") Intel Core 2 Duo
System bus	667MHz front side bus
Memory	667MHz PC2-5300 DDR2 SO-DIMM SDRAM
Memory	512MB (early 2006, one 512MB/Mid 2006, two 256MB) Optional: 2GB				512MB (two 256MB) or 1GB (two 512MB) Optional: 3GB
Graphics / Graphics	ATi Radeon X1600 with 128MB of GDDR3 SDRAM		Intel GMA 950 with 64MB shared memory		ATi Radeon X1600 with 128MB of GDDR3 SDRAM		nVidia GeForce 7300GT with 128MB of GDDR3 SDRAM
Graphics / Graphics	—	Optional: 256MB	—	—	Optional: 256MB		Optional: 7600GT with 256MB
Hard drive	160 GB Optional: 250GB	250GB Optional: 500GB	160GB Optional: 250GB	160GB	160GB Optional: 250GB or 500GB	250GB Optional: 500GB
Hard drive	Serial ATA 7200rpm
Optical drive	Slot-loading 8× SuperDrive with 2.4× DL recording (DVD+R DL/DVD±RW/CD-RW)		24× combo drive (DVD-ROM/CD-RW)		SuperDrive
Connectivity	Internal AirPort Extreme 802.11a/b/g Gigabit Ethernet Built-in infrared (IR) receiver for Apple Remote Bluetooth 2.0 + EDR (except Late 2006 1.83 Ghz)				Internal Airport Extreme 802.11a/b/g (draft-n disabled by default) Gigabit Ethernet Built-in infrared (IR) receiver for Apple Remote Bluetooth 2.0 + EDR
Camera	iSight Camera (640 x 480 0.3 MP)
Video out	Mini-DVI
Peripherals	3x USB 2.0 2x Firewire 400 Headphone/digital audio output Audio line-in			3x USB 2.0 2x Firewire 400 Headphone/digital audio output Audio line-in/digital audio input			3x USB 2.0 1x Firewire 400 1x Firewire 800 Headphone/digital audio output Audio line-in/digital audio input
Maximum operating system	OS X 10.6.8 "Snow Leopard"			OS X 10.11.6 "El Capitan" if 4GB RAM is installed.

Aluminum iMac

In August 2007, Apple introduced a complete redesign of the iMac, featuring an aluminum, glass and plastic enclosure. There is only one visible screw on the entire computer, located at the base of the iMac for accessing the memory slots. It has a black, plastic backplate that is not user removable. The 17-inch model was completely removed from the lineup.

In March 2009, Apple released a minor refresh of the iMac line. Changes included a fourth USB port, removal of the FireWire 400 port, and a slightly redesigned base. The exterior design was almost identical to the older Intel-based iMacs. The models were one 20-inch configuration and three 24-inch configurations (instead of two at each screen size as before).^[13]

Apple doubled the default RAM and hard-disk size on all models, moving the RAM to the DDR2^[14] specification. This revision also introduced a new, smaller, and more compact Apple Keyboard that excluded the numeric keypad and forward delete key in favor of the fn + Delete keys shortcut by default.^[13] Users could, however, replace this version with a more traditional, full-size model with a numeric keypad by requesting Apple to build their machine to order through its online store.

Specifications of aluminium iMacs from 2007 through 2009
Component / Processor model	Intel Core 2 Duo
Model	Mid 2007^[15]		Early 2008^[16]		Early 2009^[17]
Release date	August 7, 2007^[18]		April 28, 2008^[19]		March 3, 2009^[20]
Marketing Model No.^[10]^[11]^[12]	MA876XX/A MA877XX/A MB199XX/A MB200XX/A	MA878XX/A MB201XX/A MB322XX/A	MB323XX/A MB324XX/A MB388XX/A MB391XX/A	MB325XX/A MB393XX/A MB398XX/A	MB417XX/A MC019XX/A	MB418XX/A MB419XX/A MB420XX/A MC020XX/A MC021XX/A MC022XX/A
Model Number	A1224	A1225	A1224	A1225	A1224	A1225
Model Identifier^[12]	iMac7,1		iMac8,1		iMac9,1
EMC No.	2133	2134	2210	2211	2266	2267
Enclosure	Aluminum, glass and plastic
Display	20", 1680 × 1050	24", 1920 × 1200 IPS	20", 1680 × 1050	24", 1920 × 1200 IPS	20", 1680 × 1050	24", 1920 × 1200 IPS
Display	glossy glass-covered widescreen 16:10
Processor	2.0GHz (T7300 "Merom") Intel Core 2 Duo 4MB on-chip L2 cache	2.4GHz (T7700 "Merom") Intel Core 2 Duo 4MB on-chip L2 cache	2.4GHz (E8135 "Penryn") Intel Core 2 Duo 6MB on-chip L2 cache	2.8GHz (E8235 "Penryn") Intel Core 2 Duo 6MB on-chip L2 cache	2.66GHz (E8135 "Penryn") Intel Core 2 Duo 6MB on-chip L2 cache	2.66GHz (E8135 "Penryn") Intel Core 2 Duo or 2.93GHz (E8335) "Penryn") Intel Core 2 Duo 6MB on-chip L2 cache
Processor	Optional: 2.4GHz (T7700 "Merom") Intel Core 2 Duo	Optional: 2.8GHz (X7900 "Merom XE") Intel Core 2 Extreme	Optional: 2.66GHz (E8335 "Penryn") Intel Core 2 Duo	Optional: 3.06GHz (E8435 "Penryn") Intel Core 2 Duo	Optional: 2.93GHz (E8335 "Penryn") Intel Core 2 Duo	Optional: 3.06GHz (E8435 "Penryn") Intel Core 2 Duo
System bus	800MHz front side bus		1066MHz front side bus
Memory	1GB (two 512MB) or 2GB (two 1GB) Optional: 6GB (4GB Officially)		1GB (two 512MB) or 2GB (two 1GB) Optional: 6GB (4GB Officially)		2GB (two 1GB) or 4GB (two 2GB) Optional: 8GB
Memory	SODIMM DDR2 SDRAM-667		SODIMM DDR2 SDRAM-800		SODIMM DDR3 SDRAM-1066
Graphics / Graphics	ATI Radeon HD 2400 XT with 128MB of GDDR3 SDRAM	ATi Radeon HD 2600 PRO with 256MB of GDDR3 SDRAM	ATi Radeon HD 2400 XT with 128MB of GDDR3 SDRAM	ATi Radeon HD 2600 PRO with 256MB of GDDR3 SDRAM	nVidia GeForce 9400M with 256MB shared memory	nVidia GeForce GT 120 with 256MB of GDDR3 SDRAM
Graphics / Graphics	Optional: 2600 PRO with 256MB	—	Optional: 2600 PRO with 256MB	Optional: nVidia 8800 GS with 512MB	Optional: GT 130 or ATI Radeon HD 4850, both with 512MB of GDDR3 SDRAM
Hard drive	250GB Optional: 320GB, 500GB, 750GB or 1TB	320GB Optional: 500GB, 750GB or 1TB	250GB Optional: 320GB, 500GB, 750GB or 1TB	320GB Optional: 500GB, 750GB or 1TB	320GB Optional: 640GB or 1TB	640GB Optional: 1TB
Hard drive	Serial ATA 7200rpm
Optical drive	8x double-layer SuperDrive (DVD±R DL/DVD±RW/CD-RW)
Connectivity	Internal AirPort Extreme 802.11a/b/g/n (draft-n enabled) Gigabit Ethernet Built-in infrared (IR) receiver for Apple Remote Bluetooth 2.0 + EDR		Internal AirPort Extreme (802.11n) 802.11a/b/g/n (draft-n enabled) Gigabit Ethernet Built-in infrared (IR) receiver for Apple Remote Bluetooth 2.1 + EDR
Camera	iSight Camera (640 x 480 0.3 MP)
Video out	Mini-DVI				Mini DisplayPort
Peripherals	3x USB 2.0 1x FireWire 400 1x FireWire 800 Headphone/digital audio output Audio line-in/digital audio input				4x USB 2.0 1x Firewire 800 Headphone/digital audio output Audio line-in/digital audio input
Maximum operating system	macOS 10.12.5 "Sierra" unofficially with Sierra Patcher if 2GB of ram is installed and with upgraded Penryn cpu, OS X 10.11 "El Capitan" officially if 2GB of ram is installed, OS X Snow Leopard otherwise		OS X 10.11 "El Capitan" officially, macOS 10.12 "Sierra" unofficially with Sierra Patcher if 2GB of ram is installed, OS X Snow Leopard otherwise		OS X 10.11 "El Capitan" officially, macOS 10.12 "Sierra" unofficially with Sierra Patcher

Unibody iMac

In October 2009, a 16:9 aspect ratio screen was introduced in 21.5" and 27" models, replacing the 20" and 24" 16:10 aspect ratio screens of the previous generation. The back is now a continuation of the aluminum body from the front and sides instead of a separate plastic backplate. Video card options entirely switched to AMD, save for the standard onboard Nvidia card in the base model. The iMac's processor selection saw a significant increase.

Default RAM has also been increased across the iMac range. With the advent of the larger screens, Apple doubled the number of memory slots from two to four. Consequently, the maximum memory capacity was also doubled (to 16 GB), and for Intel Core i-series (27-inch), quadrupled, to 32 GB.

Specifications of Unibody iMacs from 2009 through 2011
Component / Processor model	Intel Core 2 Duo, Core i5, and Core i7				Intel Core i3, Core i5, and Core i7				Core i5, and Core i7				Intel Core i3
Model	Late 2009^[21]				Mid 2010^[22]				Mid 2011^[23]				Late 2011 (education only)^[24]
Release date	October 20, 2009^[25]				July 27, 2010^[26]				May 3, 2011^[27]				August 8, 2011
Marketing Model No.^[10]^[11]^[12]	MB950xx/A	MC413xx/A	MB952xx/A	MB953xx/A	MC508xx/A	MC509xx/A	MC510xx/A	MC511xx/A	MC309xx/A	MC812xx/A	MC813xx/A	MC814xx/A	MC978xx/A
Model Number	A1311		A1312		A1311		A1312		A1311		A1312		A1311
Model Identifier^[12]	iMac10,1			iMac11,1	iMac11,2		iMac11,3		iMac12,1		iMac12,2		iMac12,1
EMC No.	2308		2309	2374	2389		2390		2428		2429		2496
Enclosure	Aluminum and glass
Display	21.5", 1920 × 1080		27", 2560 × 1440		21.5", 1920 × 1080		27", 2560 × 1440		21.5", 1920 × 1080		27", 2560 × 1440		21.5", 1920 × 1080
Display	glossy glass-covered widescreen 16:9, LED backlighting and IPS technology
Processor	3.06GHz (E7600 "Wolfdale-3M") Intel Core 2 Duo 3MB on-chip L2 cache			2.66GHz Quad-core (Turbo Boost up to 3.2 GHz) (750 "Lynnfield") Intel Core i5 8MB on-chip L3 cache	3.06GHz Dual-Core (540 "Clarkdale") Intel Core i3 4MB on-chip L3 cache	3.2GHz Dual-Core (550 "Clarkdale") Intel Core i3 4MB on-chip L3 cache		2.8GHz Quad-core (Turbo Boost up to 3.33 GHz) (760 "Lynnfield") Intel Core i5 8MB on-chip L3 cache	2.5GHz Quad-core (Turbo Boost up to 3.3 GHz) (2400S "Sandy Bridge") Intel Core i5 6MB on-chip L3 cache	2.7GHz Quad-core (Turbo Boost up to 3.7 GHz) (2500S "Sandy Bridge") Intel Core i5 6MB on-chip L3 cache		3.1GHz Quad-core (Turbo Boost up to 3.4 GHz) (2400 "Sandy Bridge") Intel Core i5 6MB on-chip L3 cache	3.1GHz Dual-Core (2100 "Sandy Bridge") 3 MB on-chip L3 cache
Processor	Optional: 3.33GHz (E8600 "Wolfdale") Intel Core 2 Duo 6MB on-chip L2 cache			Optional: 2.8GHz Quad-core (Turbo Boost up to 3.46 GHz) (860) Intel Core i7	Optional: 3.2GHz Dual-Core (550) Intel Core i3 or 3.6GHz (680 "Clarkdale") Intel Core i5		Optional: 3.6GHz Dual-Core (Turbo Boost up to 3.86 GHz) (680 "Clarkdale") Intel Core i5	Optional: 2.93GHz Quad-core (Turbo Boost up to 3.6 GHz) (870) Intel Core i7	—	Optional: 2.8GHz Quad-core (Turbo Boost up to 3.8 GHz) (2600S) Intel Core i7	—	Optional: 3.4GHz Quad-core (Turbo Boost up to 3.8 GHz) (2600) Intel Core i7	—
System bus	Front Side Bus			Intel Direct Media Interface
System bus	1066MHz Optional: 1333 MHz with 3.33GHz Core 2 Duo option			2.5 GT/s
Memory	4GB (two 2GB, two slots empty) Optional: 16GB			4GB (two 2GB, two slots empty) Expandable to 32GB^[28] (16GB supported by Apple)									2 GB (one 2 GB) Optional: 8 GB
Memory	1066MHz PC3-8500 DDR3 SO-DIMM SDRAM			1066MHz PC3-8500 DDR3 SO-DIMM SDRAM (Upgradable to 1333MHz PC3-10600 DDR3 SO-DIMM SDRAM)	1333MHz PC3-10600 DDR3 SO-DIMM SDRAM
Graphics / Graphics	nVidia GeForce 9400M with 256MB shared memory	ATi Radeon HD 4670 with 256MB of GDDR3 SDRAM		ATi Radeon HD 4850 with 512MB of GDDR3 SDRAM	ATi Radeon HD 4670 with 256MB of GDDR3 SDRAM	ATi Radeon HD 5670 with 512MB of GDDR3 SDRAM		ATi Radeon HD 5750 with 1GB of GDDR5 SDRAM	AMD Radeon HD 6750M with 512 MB of GDDR5 SDRAM	AMD Radeon HD 6770M with 512MB of GDDR5 SDRAM		AMD Radeon HD 6970M with 1GB of GDDR5 SDRAM	AMD Radeon HD 6750M with 256MB of GDDR5 SDRAM
Graphics / Graphics	nVidia GeForce 9400M with 256MB shared memory	ATi Radeon HD 4670 with 256MB of GDDR3 SDRAM		ATi Radeon HD 4850 with 512MB of GDDR3 SDRAM	ATi Radeon HD 4670 with 256MB of GDDR3 SDRAM	ATi Radeon HD 5670 with 512MB of GDDR3 SDRAM		ATi Radeon HD 5750 with 1GB of GDDR5 SDRAM	AMD Radeon HD 6750M with 512 MB of GDDR5 SDRAM	AMD Radeon HD 6770M with 512MB of GDDR5 SDRAM		Optional: with 2GB GDDR5 SDRAM	AMD Radeon HD 6750M with 256MB of GDDR5 SDRAM
Hard drive	500GB Optional: 1TB or 2TB		1TB Optional: 2TB		500GB Optional: 1TB or 2TB	1TB Optional: 2TB	1TB Optional: 2TB and/or 256GB SSD		500GB	1TB Optional: 2TB and/or 256GB SSD			250 GB
Hard drive	Serial ATA 7200rpm
Optical drive	8x double-layer SuperDrive (DVD±R DL/DVD±RW/CD-RW)
Connectivity	Internal AirPort Extreme 802.11a/b/g/n Gigabit Ethernet Built-in infrared (IR) receiver for Apple Remote Bluetooth 2.1 + EDR												Internal AirPort Extreme 802.11a/b/g/n Gigabit Ethernet Built-in infrared (IR) receiver for Apple Remote
Camera	iSight Camera (640 × 480 0.3 MP)								FaceTime HD camera 720p (1280 x 720 0.9 MP)
Video out	Mini DisplayPort Mini DisplayPort to VGA, DVI, HDMI and DisplayPort adapters available
Peripherals	4x USB 2.0 1x Firewire 800 SD Card slot Headphone/digital audio output Audio line-in/digital audio input				4x USB 2.0 1x Firewire 800 SDXC Card slot Headphone/digital audio output Audio line-in/digital audio input				4x USB 2.0 1x Firewire 800 SDXC Card slot Headphone/digital audio output Audio line-in/digital audio input 1x Thunderbolt port (21.5") 2x Thunderbolt ports (27")				4x USB 2.0 1x Firewire 800 SDXC Card slot Headphone/digital audio output Audio line-in/digital audio input

Slim Unibody iMac

In October 2012, a new iMac model was introduced that featured a considerably smaller body depth than the previous models, measuring 5mm at its thinnest point. This was partly achieved by using a process called Full lamination. The display and glass are laminated together eliminating a 2 mm gap between them. The 21.5 in and 27 in screens remained at their previous resolutions, 1920×1080 and 2560×1440 respectively.

As with the 2009 model, memory has been upgraded; the standard specification is now 8 GB, with the 21.5 in model supporting up to 16 GB and the 27 in model supporting up to 32 GB. It was reported that the 21.5 in iMac would have non-replaceable soldered memory similar to the MacBook Air and Retina display MacBook Pro^[29] though tear-downs show that it uses removable memory but accessing the modules requires ungluing the screen and removing the logic board.^[30] The 27 in version features an access port to upgrade memory without disassembling the display.^[31] Apple also upgraded the computers' processors, using Intel's Ivy Bridge microarchitecture-based Core i5 and Core i7 microprocessors.

Video cards are now Nvidia as standard. USB 3.0 ports are now included for the first time. The 2012 iMac also features the option of a Fusion Drive which combines an SSD and a conventional HDD to create more efficient and faster storage. Apple also removed the built-in optical drive starting with this iMac generation.

On March 5, 2013, Apple quietly announced an education-only version of the iMac, with less powerful specs for a cheaper price. It includes a 3.3 GHz dual-core Intel i3 processor, 4 GB of memory, a 500 GB hard drive and Intel HD Graphics 4000, retailing for US$1099, $200 cheaper than the base-level consumer iMac.^[32]

On September 24, 2013, the 2012 iMac model was updated with 4th-generation Intel Haswell processors and Nvidia 7xx series GPU, promising up to 1.4x improvements in performance. It also has 802.11ac Wi-Fi, which is capable of reaching speeds up to 1300 Mbit/s and PCIe-based flash storage, offering up to 1.5x the performance of previous-generation (Ivy Bridge) iMacs. This applies to both the Fusion Drive and pure-SSD options.

Specifications of Slim Unibody iMacs from 2012
Component / Processor model	Core i5, and Core i7
Model	Late 2012^[33]^[34]				Early 2013 (education only)	Late 2013^[35]^[36]				Mid 2014^[37]	Late 2015^[38]		Mid 2017
Release date	November 30, 2012^[39]		January 2013^[40]		March 5, 2013	September 24, 2013^[41]				June 18, 2014^[42]	October 13, 2015^[43]		June 5, 2017
Marketing Model No.^[10]^[11]^[12]	MD093XX/A	MD094XX/A	MD095XX/A	MD096XX/A	MD699XX/A	ME086XX/A	ME087XX/A	ME088XX/A	ME089XX/A	MF883XX/A, MG022XX/A	MK142XX/A	MK442XX/A	[data missing]
Model Number	A1418		A1419		A1418	A1418		A1419		A1418	A1418		[data missing]
Model Identifier^[12]	iMac13,1		iMac13,2		iMac13,1	iMac14,1		iMac14,2		iMac14,4	iMac16,1		[data missing]
EMC No.	2544		2546		2544	2638		2639		2805^[44]	2889		[data missing]
Enclosure	Aluminum and glass
Display	21.5", 1920 × 1080		27", 2560 × 1440		21.5", 1920 × 1080	21.5", 1920 × 1080		27", 2560 × 1440		21.5", 1920 × 1080
Display	Glossy glass-covered widescreen 16:9, LED backlighting and IPS technology
Processor	2.7GHz Quad-core (Turbo Boost up to 3.2 GHz) (3330S "Ivy Bridge")^[45] Intel Core i5	2.9GHz Quad-core (Turbo Boost up to 3.6 GHz) (3470S "Ivy Bridge") Intel Core i5		3.2GHz Quad-core (Turbo Boost up to 3.6 GHz) (3470 "Ivy Bridge") Intel Core i5	3.3GHz (3225 "Ivy Bridge") Intel Core i3	2.7GHz Quad-core (Turbo Boost up to 3.2 GHz) (4570R "Haswell") Intel Core i5	2.9GHz Quad-core (Turbo Boost up to 3.6 GHz) (4570S "Haswell") Intel Core i5	3.2GHz Quad-core (Turbo Boost up to 3.6 GHz) (4570 "Haswell") Intel Core i5	3.4GHz Quad-core (Turbo Boost up to 3.8 GHz) (4670 "Haswell") Intel Core i5	1.4GHz Dual-core (Turbo Boost up to 2.7 GHz) (4260U "Haswell") Intel Core i5	1.6GHz Dual-core (Turbo Boost up to 2.7 GHz) (5250U "Broadwell") Intel Core i5	2.8GHz Quad-core (Turbo Boost up to 3.3 GHz) (5575R "Broadwell") Intel Core i5	2.3GHz Dual-core (Turbo Boost up to 3.6 GHz) (7360U "Kaby Lake") Intel Core i5
	6MB on-chip L3 cache				3MB on-chip L3 cache	4MB on-chip L3 cache	6MB on-chip L3 cache			3MB shared L3 cache		4MB shared L3 cache
	—	Optional: 3.1GHz Quad-core (Turbo Boost up to 3.9 GHz) (3770S "Ivy Bridge") Intel Core i7 8MB on-chip L3 cache)	—	Optional: 3.4GHz Quad-core (Turbo Boost up to 3.9 GHz) (3770 "Ivy Bridge") Intel Core i7 8MB on-chip L3 cache)	—	—	Optional: 3.1GHz Quad-core (Turbo Boost up to 3.9 GHz) (4770S "Haswell") Intel Core i7 8MB on-chip L3 cache)	—	Optional: 3.5GHz Quad-core (Turbo Boost up to 3.9 GHz) (4771 "Haswell") Intel Core i7 8MB on-chip L3 cache)	—	—	—	—
System bus	Intel Direct Media Interface
System bus	5 GT/s
Memory	8GB (two 4GB, not user-accessible "AASP Installable Slot") Optional: 16GB		8GB (two 4GB, two slots empty) Optional: 16GB and 32GB		4GB (two 2GB, not user-accessible "AASP Installable Slot")	8GB (two 4GB, not user-accessible "AASP Installable Slot") Optional: 16GB		8GB (two 4GB, two slots empty) Optional: 16GB and 32GB		8GB (soldered on-board)	8GB (soldered on-board) Optional: 16GB
Memory	1600MHz PC3-12800 DDR3 SO-DIMM SDRAM									1600MHz PC3-12800 LPDDR3 SDRAM (soldered on-board)	1867MHz PC3-14900 LPDDR3 SDRAM (soldered on-board)		2133MHz LPDDR4
Graphics / Graphics	Nvidia GeForce GT 640M with 512MB of GDDR5 SDRAM	Nvidia GeForce GT 650M with 512MB of GDDR5 SDRAM	Nvidia GeForce GTX 660M with 512MB of GDDR5 SDRAM	Nvidia GeForce GTX 675MX with 1GB of GDDR5 SDRAM	Intel HD Graphics 4000	Intel Iris Pro Graphics 5200	Nvidia GeForce GT 750M with 1GB of GDDR5 SDRAM	Nvidia GeForce GT 755M with 1GB of GDDR5 SDRAM	Nvidia GeForce GTX 775M with 2GB of GDDR5 SDRAM	Intel HD Graphics 5000	Intel HD Graphics 6000	Intel Iris Pro Graphics 6200	Intel Iris Plus Graphics 640
Graphics / Graphics	—	—	—	Optional: Nvidia GeForce GTX 680MX with 2GB of GDDR5 SDRAM	—	—	—	—	Optional: Nvidia GeForce GTX 780M with 4GB of GDDR5 SDRAM	—	—	—	—
Hard drive	1TB Optional: 1TB Fusion, 128GB, 256GB or 512GB SSD Fusion Drive initially only for high-end model, later added low-end model support^[46]^[47]		1TB Optional: 3TB HDD, 1TB or 3TB Fusion, 256GB, 512GB or 768GB SSD		500GB	1TB Optional: 1TB Fusion, 256GB or 512GB SSD		1TB Optional: 3TB HDD, 1TB or 3TB Fusion, 256GB, 512GB or 1TB SSD		500GB Optional: 1TB HDD, 1TB Fusion, or 256GB SSD	1TB Optional: 1TB Fusion or 256GB SSD	1TB Optional: 1TB Fusion, 2TB Fusion, or 256GB SSD	1TB Optional: 1TB Fusion or 256GB SSD
Hard drive	Serial ATA 5400rpm		Serial ATA 7200rpm		Serial ATA 5400rpm	Serial ATA 5400rpm and PCI-e for SSD		Serial ATA 7200rpm and PCI-e for SSD		Serial ATA 5400rpm and PCI-e for SSD
Optical drive	None
Connectivity	Internal AirPort Extreme 802.11a/b/g/n Gigabit Ethernet Bluetooth 4.0					Internal AirPort Extreme 802.11a/b/g/n/ac Gigabit Ethernet Bluetooth 4.0							Internal AirPort Extreme 802.11a/b/g/n/ac Gigabit Ethernet Bluetooth 4.2
Camera	FaceTime HD camera 720p (1280 × 720; 0.9 MP)
Video out	[data missing]
Peripherals	4x USB 3.0 SDXC Card slot Headphone/digital audio output 2x Thunderbolt ports Mini DisplayPort to VGA, DVI, HDMI and DisplayPort adapters available Kensington Lock Slot										Replace: 2x Thunderbolt 2 ports		Replace 2x Thunderbolt 3 Ports

iMac with Retina display

A Retina Display "5K" model with a resolution of 5120 × 2880 was introduced alongside the previous year's models during a keynote on October 16, 2014. This 27-inch model was given faster Haswell processors and its two Thunderbolt ports were updated to Thunderbolt 2. Secondary storage was also upgraded to a 1TB Fusion drive as standard and video options changed over to AMD Radeon R9 M290X and M295X. A 21.5-inch "4K" model with a resolution of 4096 × 2304 was released on October 13, 2015.

Specifications of iMacs with Retina display from 2014
Component / Processor model	Core i5, and Core i7
Model	Late 2014^[48]	Mid 2015^[49]	Late 2015^[50]^[51]				Mid 2017
Release date	October 16, 2014^[52]	May 19, 2015^[53]	October 13, 2015^[54]				June 5, 2017
Part Number^[12]	MF886XX/A	MF885XX/A	MK452XX/A	MK462XX/A	MK472XX/A	MK482XX/A	[data missing]	[data missing]	[data missing]	[data missing]	[data missing]
Model Number	A1419		A1418	A1419			[data missing]	[data missing]	[data missing]	[data missing]	[data missing]
Model Identifier^[12]	iMac15,1		iMac16,2	iMac17,1			[data missing]	[data missing]	[data missing]	[data missing]	[data missing]
EMC No.	2806		2833	2834			[data missing]	[data missing]	[data missing]	[data missing]	[data missing]
Enclosure	Aluminum and glass
Display	27", 5120 × 2880		21.5", 4096 × 2304	27", 5120 × 2880			21.5", 4096 × 2304		27", 5120 × 2880
Display	Glossy glass-covered widescreen 16:9, LED backlighting and IPS technology		Glossy glass-covered widescreen 16:9, LED backlighting and IPS technology with P3 color gamut				Glossy glass-covered widescreen 16:9, LED backlighting and IPS technology with P3 color gamut 500 nits brightness
Processor	3.5GHz Quad-core (Turbo Boost up to 3.9 GHz) (4690 "Haswell") Intel Core i5 6MB shared L3 cache	3.3GHz Quad-core (Turbo Boost up to 3.7 GHz) (4590 "Haswell") Intel Core i5 6MB shared L3 cache	3.1GHz Quad-core (Turbo Boost up to 3.6 GHz) (5675R "Broadwell") Intel Core i5 4MB shared L3 cache and 128MB L4 cache	3.2GHz (Turbo Boost up to 3.6 GHz) (6500 "Skylake") Intel Core i5 6MB shared L3 cache		3.3GHz (Turbo Boost up to 3.9 GHz) (6600 "Skylake") Intel Core i5 6MB shared L3 cache	3.0GHz (Turbo Boost up to 3.5 GHz) (7400 "Kaby Lake") Intel Core i5 6MB shared L3 cache	3.4GHz (Turbo Boost up to 3.8 GHz) (7500 "Kaby Lake") Intel Core i5 6MB shared L3 cache		3.5GHz (Turbo Boost up to 4.1 GHz) (7600 "Kaby Lake") Intel Core i5 6MB shared L3 cache	3.8GHz (Turbo Boost up to 4.2 GHz) (7600K "Kaby Lake") Intel Core i5 6MB shared L3 cache
Processor	Optional: 4.0GHz Quad-core (Turbo Boost up to 4.4 GHz) Haswell Intel Core i7 8MB shared L3 cache (i7-4790K)	—	Optional: 3.3GHz Quad-core (Turbo Boost up to 3.8 GHz) Broadwell Intel Core i7 6MB shared L3 cache and 128MB L4 cache (i7-5775R)	—	Optional: 4.0GHz Quad-core (Turbo Boost up to 4.2 GHz) Skylake Intel Core i7 8MB shared L3 cache (i7-6700K)		Optional: 3.6GHz Quad-core (Turbo Boost up to 4.2 GHz) Kaby Lake Intel Core i7 8MB shared L3 cache (i7 7700)		—	Optional: 4.2GHz Quad-core (Turbo Boost up to 4.5 GHz) Kaby Lake Intel Core i7 8MB shared L3 cache (i7 7700K)
System bus	Intel Direct Media Interface 2.0			Intel Direct Media Interface 3.0			[data missing]
System bus	1600MHz PC3-12800 DDR3 SO-DIMM SDRAM		1867MHz PC3-14900 LPDDR3 SDRAM (soldered on-board)	1867MHz PC3-14900 DDR3L SO-DIMM SDRAM			2400MHz [?] DDR4 SO-DIMM SDRAM
Memory	8GB (two 4GB, two slots empty) Optional: 16GB and 32GB		8GB (soldered on-board) Optional: 16GB	8GB (two 4GB, two slots empty) Optional: 16GB and 32GB, expandable to 64 GB with third party modules.^[55]			8GB (two 4GB, two slots empty) Optional: 16GB	colspan="2"	8GB (two 4GB, two slots empty) Optional: 16GB and 32GB	8GB (two 4GB, two slots empty) Optional: 16GB, 32GB, and 64GB
Memory	1600MHz PC3-12800 DDR3 SO-DIMM SDRAM		1867MHz PC3-14900 LPDDR3 SDRAM (soldered on-board)	1867MHz PC3-14900 DDR3L SO-DIMM SDRAM			2400MHz PC4-19200 DDR4 SO-DIMM SDRAM
Graphics	AMD Radeon R9 M290X with 2 GB of GDDR5 SDRAM Optional: AMD Radeon R9 M295X with 4 GB of GDDR5 SDRAM 30bit Deep Color^[56]	AMD Radeon R9 M290 with 2 GB of GDDR5 SDRAM 30bit Deep Color	Intel Iris Pro Graphics 6200	AMD Radeon R9 M380 with 2 GB of GDDR5 SDRAM 30bit Deep Color	AMD Radeon R9 M390 with 2 GB of GDDR5 SDRAM 30bit Deep Color	AMD Radeon R9 M395 with 2 GB of GDDR5 SDRAM Optional: AMD Radeon R9 M395X with 4 GB of GDDR5 SDRAM 30bit Deep Color	Radeon Pro 555 with 2GB VRAM	Radeon Pro 560 with 4GB VRAM	Radeon Pro 570 with 4GB VRAM		Radeon Pro 580 with 8GB VRAM
Hard drive	1TB Fusion Optional: 3TB Fusion, 256GB, 512GB or 1TB SSD	1TB Optional: 3TB HDD, 1TB or 3TB Fusion, 256GB, 512GB or 1TB SSD	1TB Optional: 1TB or 2TB Fusion, 256GB or 512GB SSD	1TB Optional: 3TB HDD, 1TB, 2TB or 3TB Fusion, 256GB or 512GB SSD	1TB Fusion Optional: 2TB or 3TB Fusion, 256GB, 512GB or 1TB SSD	2TB Fusion Optional: 3TB Fusion, 256GB, 512GB or 1TB SSD	1TB Optional: 1TB Fusion, 256GB or 512GB SSD	1TB Fusion Optional: 256GB, 512GB or 1TB SSD	1TB Fusion Optional: 2TB Fusion, 256GB, 512GB or 1TB SSD	1TB Fusion Optional: 2TB or 3TB Fusion, 256GB, 512GB or 1TB SSD	2TB Fusion Optional: 3TB Fusion, 512GB, 1TB, 2TB SSD
Hard drive	Serial ATA 7200rpm and PCI-e for SSD		colspan=2 Serial ATA 5400rpm and PCI-e for SSD	Serial ATA 7200rpm and PCI-e for SSD			Serial ATA 5400rpm and PCI-e for SSD		Serial ATA 7200rpm and PCI-e for SSD
Optical drive	None
Connectivity	Internal AirPort Extreme 802.11a/b/g/n/ac Gigabit Ethernet Bluetooth 4.0					Internal AirPort Extreme 802.11a/b/g/n/ac Gigabit Ethernet Bluetooth 4.2
Camera	FaceTime HD camera 720p (1280 × 720; 0.9 MP)
Video out	Up to two 4096-by-2160 external displays or one 5120-by-2880 dual-cable external display^[57]
Peripherals	4x USB 3.0 SDXC Card slot Headphone/digital audio output 2x Thunderbolt 2 ports Mini DisplayPort to VGA, DVI, HDMI and DisplayPort adapters available Kensington Lock Slot						4x USB 3.0 SDXC Card slot Headphone/digital audio output 2x Thunderbolt 3 (USB-C) ports Mini DisplayPort to VGA, DVI, HDMI and DisplayPort adapters available Kensington Lock Slot

iMac Pro

On June 5, 2017, Apple announced a workstation-class version of the iMac, called the "iMac Pro." The iMac Pro shares the design and screen of the 5K iMac, but is coloured in Space Gray rather than silver. It comes with Intel Xeon processors and standard SSD storage. The iMac Pro will ship sometime in December 2017.^[58]

References

^ https://www.apple.com/imac/design/ - Retrieved December 2012
^ "Apple – iMac – Intel Core Duo". Apple Inc. Archived from the original on May 29, 2006. Retrieved March 1, 2007.
^ AirPort Extreme performance page see footnote 2
^ "iMac (Early 2006) – Technical Specifications". Apple Inc. Retrieved October 22, 2009.
^ "iMac (Mid 2006) – Technical Specifications". Apple Inc. Retrieved October 22, 2009.
^ "iMac (Late 2006) – Technical Specifications". Apple Inc. Retrieved October 22, 2009.
^ http://www.apple.com/pr/library/2006/01/10Apple-Unveils-New-iMac-with-Intel-Core-Duo-Processor.html
^ http://www.apple.com/pr/library/2006/07/05Apple-Introduces-899-Education-Configuration-for-17-inch-iMac.html
^ http://www.apple.com/pr/library/2006/09/06Apple-iMac-Line-Now-Features-Intel-Core-2-Duo-Processors-In-Every-Model.html
^ ^a ^b ^c ^d How to identify your iMac, Apple Inc., retrieved September 28, 2010
^ ^a ^b ^c ^d iMac (Early 2009) – Technical Specifications, Apple Inc., retrieved January 24, 2012
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j http://support.apple.com/kb/ht1758
^ ^a ^b Mac OS X keyboard shortcuts Apple.com; June 25, 2010
^ https://support.apple.com/kb/SP16?viewlocale=en_CA&locale=en_CA
^ "iMac (Mid 2007) – Technical Specifications". Apple Inc. Retrieved October 22, 2009.
^ "iMac (Early 2008) – Technical Specifications". Apple Inc. Retrieved October 22, 2009.
^ "iMac (Early 2009) – Technical Specifications". Apple Inc. Retrieved October 22, 2009.
^ http://www.apple.com/pr/library/2007/08/07Apple-Unveils-New-iMac.html
^ http://www.apple.com/pr/library/2008/04/28Apple-Updates-iMac.html
^ http://www.apple.com/pr/library/2009/03/03Apple-Updates-Consumer-Desktop-Line.html
^ "iMac (21.5 and 27-inch, Late 2009) – Technical Specifications". Apple Inc. Retrieved October 22, 2009.
^ "iMac (21.5 and 27-inch, Mid 2010) – Technical Specifications". Apple Inc. Retrieved July 27, 2010.
^ "iMac (21.5 and 27-inch, Mid 2011) – Technical Specifications". Apple Inc. Retrieved November 7, 2011.
^ "iMac (21.5-inch, Late 2011) – Technical Specifications". Apple Inc. Retrieved January 5, 2017.
^ http://www.apple.com/pr/library/2009/10/20Apple-Unveils-New-iMac-With-21-5-and-27-inch-Displays.html
^ http://www.apple.com/pr/library/2010/07/27Apple-Updates-iMac-Line.html
^ http://www.apple.com/pr/library/2011/05/03Apple-Announces-New-iMac-With-Next-Generation-Quad-Core-Processors-Graphics-Thunderbolt-I-O-Technology.html
^ "Can the Late 2009 27" iMac handle 32GB of RAM?". MacRumors. September 18, 2012.
^ http://bgr.com/2012/10/24/apple-imac-non-upgradable-ram/
^ http://www.ifixit.com/Teardown/iMac+Intel+21.5-Inch+EMC+2544+Teardown/11936/2
^ http://www.cultofmac.com/204018/upgrading-ram-on-the-new-27-inch-imac-is-easy-heres-how/
^ Slivka, Eric (March 5, 2013). "Apple Launches $1099 21.5-Inch iMac With 3.3 GHz Dual-Core i3 Processor for Educational Institutions". Retrieved June 16, 2013.
^ "iMac (21.5-inch, Late 2012) – Technical Specifications". Apple Inc. Retrieved February 18, 2017.
^ "iMac (27-inch, Late 2012) – Technical Specifications". Apple Inc. Retrieved February 18, 2017.
^ "iMac (21.5-inch, Late 2013) – Technical Specifications". Apple Inc. Retrieved February 18, 2017.
^ "iMac (27-inch, Late 2013) – Technical Specifications". Apple Inc. Retrieved February 18, 2017.
^ "iMac (21.5-inch, Mid 2014) – Technical Specifications". Apple Inc. Retrieved February 18, 2017.
^ "iMac (21.5-inch, Late 2015) – Technical Specifications". Apple Inc. Retrieved February 18, 2017.
^ http://www.apple.com/pr/library/2012/11/27iMac-Available-on-November-30.html
^ "New 27-inch iMac orders won't ship until January | Macworld". Macworld. Retrieved January 15, 2013.
^ http://www.apple.com/pr/library/2013/09/24Apple-Updates-iMac.html
^ http://www.apple.com/pr/library/2014/06/18Apple-Introduces-New-Entry-Level-21-5-inch-iMac.html
^ http://www.apple.com/pr/library/2015/10/13Apple-Updates-iMac-Family-with-Stunning-New-Retina-Displays.html
^ http://www.everymac.com/ultimate-mac-lookup/?search_keywords=2805
^ "iMac Intel 21.5" EMC 2544 Teardown". iFixit. December 1, 2012. Retrieved May 21, 2017.
^ "Fusion Drive Now Available as Option for Low End 21.5" iMac". MacRumors. January 5, 2013.
^ "Apple Adds New 256GB and 512GB Flash Storage Options to iMac". MacRumors. May 2, 2013.
^ "iMac (Retina 27-inch, Late 2014) – Technical Specifications". Apple Inc. Retrieved February 18, 2017.
^ "iMac (Retina 27-inch, Mid 2015) – Technical Specifications". Apple Inc. Retrieved February 18, 2017.
^ "iMac (Retina 21.5-inch, Late 2015) – Technical Specifications". Apple Inc. Retrieved February 18, 2017.
^ "iMac (Retina 27-inch, Late 2015) – Technical Specifications". Apple Inc. Retrieved February 18, 2017.
^ http://www.apple.com/pr/library/2014/10/16Apple-Introduces-27-inch-iMac-with-Retina-5K-Display.html
^ http://www.apple.com/pr/library/2015/05/19Apple-Introduces-15-inch-MacBook-Pro-with-Force-Touch-Trackpad-New-1-999-iMac-with-Retina-5K-Display.html
^ http://www.apple.com/pr/library/2015/10/13Apple-Updates-iMac-Family-with-Stunning-New-Retina-Displays.html
^ http://blog.macsales.com/33336-owc-offers-48gb-and-64gb-memory-upgrades-for-new-imac-27-5k
^ See System Profiler at El Capitan
^ "iMac (Retina 5K, 27-inch, Late 2015) - Technical Specifications". support.apple.com. Retrieved May 27, 2017.
^ https://www.apple.com/imac-pro/

Preceded by iMac G5	iMac (Intel-based) January 10, 2006	Succeeded by –

[1] ttps://www.apple.com/imac/design/ - Retrieved December 2012

[2] "Apple – iMac – Intel Core Duo". Apple Inc. Archived from the original on May 29, 2006. Retrieved March 1, 2007.

[3] AirPort Extreme performance page see footnote 2

[Early_2006-4] "iMac (Early 2006) – Technical Specifications". Apple Inc. Retrieved October 22, 2009.

[Mid_2006-5] "iMac (Mid 2006) – Technical Specifications". Apple Inc. Retrieved October 22, 2009.

[Late_2006-6] "iMac (Late 2006) – Technical Specifications". Apple Inc. Retrieved October 22, 2009.

[7] ttp://www.apple.com/pr/library/2006/01/10Apple-Unveils-New-iMac-with-Intel-Core-Duo-Processor.html

[8] ttp://www.apple.com/pr/library/2006/07/05Apple-Introduces-899-Education-Configuration-for-17-inch-iMac.html

[9] ttp://www.apple.com/pr/library/2006/09/06Apple-iMac-Line-Now-Features-Intel-Core-2-Duo-Processors-In-Every-Model.html

[Marketing_Model_Number-10] How to identify your iMac, Apple Inc., retrieved September 28, 2010

[How_to_identify_iMac_models-11] iMac (Early 2009) – Technical Specifications, Apple Inc., retrieved January 24, 2012

[Model1758-12] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j http://support.apple.com/kb/ht1758

[support.apple-13] Mac OS X keyboard shortcuts Apple.com; June 25, 2010

[14] ttps://support.apple.com/kb/SP16?viewlocale=en_CA&locale=en_CA

[Mid_2007-15] "iMac (Mid 2007) – Technical Specifications". Apple Inc. Retrieved October 22, 2009.

[Early_2008-16] "iMac (Early 2008) – Technical Specifications". Apple Inc. Retrieved October 22, 2009.

[Early_2009-17] "iMac (Early 2009) – Technical Specifications". Apple Inc. Retrieved October 22, 2009.

[18] ttp://www.apple.com/pr/library/2007/08/07Apple-Unveils-New-iMac.html

[19] ttp://www.apple.com/pr/library/2008/04/28Apple-Updates-iMac.html

[20] ttp://www.apple.com/pr/library/2009/03/03Apple-Updates-Consumer-Desktop-Line.html

[Late_2009-21] "iMac (21.5 and 27-inch, Late 2009) – Technical Specifications". Apple Inc. Retrieved October 22, 2009.

[Mid_2010-22] "iMac (21.5 and 27-inch, Mid 2010) – Technical Specifications". Apple Inc. Retrieved July 27, 2010.

[Mid_2011-23] "iMac (21.5 and 27-inch, Mid 2011) – Technical Specifications". Apple Inc. Retrieved November 7, 2011.

[Late_2011-24] "iMac (21.5-inch, Late 2011) – Technical Specifications". Apple Inc. Retrieved January 5, 2017.

[25] ttp://www.apple.com/pr/library/2009/10/20Apple-Unveils-New-iMac-With-21-5-and-27-inch-Displays.html

[26] ttp://www.apple.com/pr/library/2010/07/27Apple-Updates-iMac-Line.html

[27] ttp://www.apple.com/pr/library/2011/05/03Apple-Announces-New-iMac-With-Next-Generation-Quad-Core-Processors-Graphics-Thunderbolt-I-O-Technology.html

[28] "Can the Late 2009 27" iMac handle 32GB of RAM?". MacRumors. September 18, 2012.

[29] ttp://bgr.com/2012/10/24/apple-imac-non-upgradable-ram/

[30] ttp://www.ifixit.com/Teardown/iMac+Intel+21.5-Inch+EMC+2544+Teardown/11936/2

[31] ttp://www.cultofmac.com/204018/upgrading-ram-on-the-new-27-inch-imac-is-easy-heres-how/

[32] Slivka, Eric (March 5, 2013). "Apple Launches $1099 21.5-Inch iMac With 3.3 GHz Dual-Core i3 Processor for Educational Institutions". Retrieved June 16, 2013.

[Late_2012,_21-inch-33] "iMac (21.5-inch, Late 2012) – Technical Specifications". Apple Inc. Retrieved February 18, 2017.

[Late_2012,_27-inch-34] "iMac (27-inch, Late 2012) – Technical Specifications". Apple Inc. Retrieved February 18, 2017.

[Late_2013,_21-inch-35] "iMac (21.5-inch, Late 2013) – Technical Specifications". Apple Inc. Retrieved February 18, 2017.

[Late_2013,_27-inch-36] "iMac (27-inch, Late 2013) – Technical Specifications". Apple Inc. Retrieved February 18, 2017.

[Mid_2014-37] "iMac (21.5-inch, Mid 2014) – Technical Specifications". Apple Inc. Retrieved February 18, 2017.

[Late_2015-38] "iMac (21.5-inch, Late 2015) – Technical Specifications". Apple Inc. Retrieved February 18, 2017.

[39] ttp://www.apple.com/pr/library/2012/11/27iMac-Available-on-November-30.html

[40] "New 27-inch iMac orders won't ship until January | Macworld". Macworld. Retrieved January 15, 2013.

[41] ttp://www.apple.com/pr/library/2013/09/24Apple-Updates-iMac.html

[42] ttp://www.apple.com/pr/library/2014/06/18Apple-Introduces-New-Entry-Level-21-5-inch-iMac.html

[43] ttp://www.apple.com/pr/library/2015/10/13Apple-Updates-iMac-Family-with-Stunning-New-Retina-Displays.html

[44] ttp://www.everymac.com/ultimate-mac-lookup/?search_keywords=2805

[45] "iMac Intel 21.5" EMC 2544 Teardown". iFixit. December 1, 2012. Retrieved May 21, 2017.

[46] "Fusion Drive Now Available as Option for Low End 21.5" iMac". MacRumors. January 5, 2013.

[47] "Apple Adds New 256GB and 512GB Flash Storage Options to iMac". MacRumors. May 2, 2013.

[Late_2014,_Retina_27-inch-48] "iMac (Retina 27-inch, Late 2014) – Technical Specifications". Apple Inc. Retrieved February 18, 2017.

[Mid_2015,_Retina_27-inch-49] "iMac (Retina 27-inch, Mid 2015) – Technical Specifications". Apple Inc. Retrieved February 18, 2017.

[Late_2015,_Retina_21-inch-50] "iMac (Retina 21.5-inch, Late 2015) – Technical Specifications". Apple Inc. Retrieved February 18, 2017.

[Late_2015,_Retina_27-inch-51] "iMac (Retina 27-inch, Late 2015) – Technical Specifications". Apple Inc. Retrieved February 18, 2017.

[52] ttp://www.apple.com/pr/library/2014/10/16Apple-Introduces-27-inch-iMac-with-Retina-5K-Display.html

[53] ttp://www.apple.com/pr/library/2015/05/19Apple-Introduces-15-inch-MacBook-Pro-with-Force-Touch-Trackpad-New-1-999-iMac-with-Retina-5K-Display.html

[54] ttp://www.apple.com/pr/library/2015/10/13Apple-Updates-iMac-Family-with-Stunning-New-Retina-Displays.html

[55] ttp://blog.macsales.com/33336-owc-offers-48gb-and-64gb-memory-upgrades-for-new-imac-27-5k

[56] See System Profiler at El Capitan

[57] "iMac (Retina 5K, 27-inch, Late 2015) - Technical Specifications". support.apple.com. Retrieved May 27, 2017.

[58] ttps://www.apple.com/imac-pro/

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