iMac (27-inch, Mid 2011)

Maximum Memory: 32 GB (Actual) 16 GB (Apple) 1333 MHz DDR3 SO-DIMM

Repair availability: Parts are no longer available from Apple for this model. We can replace a failing hard drive or faulty ram, some minor parts may be available as a second hand part.

Apple has determined that some AMD Radeon HD 6970M video cards used in 27-inch iMac computers with 3.1GHz quad-core Intel Core i5 or 3.4GHz quad-core Intel Core i7 processors may fail, causing the computer’s display to appear distorted, white or blue with vertical lines, or to turn black. iMac computers with affected video cards were sold between May 2011 and October 2012.

Introduced in May 2011, the iMac (Mid 2011) models improved on the previous iMac (Mid 2010) line, adding quad-core processors across the line. The iMac (Mid 2011) were also the first desktop Macs to include the new high-speed Thunderbolt I/O port. The iMac (Mid 2011 ) shipped in four configurations: 21.5″/2.5 GHz/4 GB RAM/500 GB HD/512 VRAM/$1199 U.S., 21.5″/2.7 GHz/4 GB RAM/1 TB HD/512 MB VRAM/$1499 U.S., 27″/2.7 GHz/4 GB RAM/1 TB HD/512 MB VRAM/$1699 U.S., 27″/3.1 GHz/4 GB RAM/1 TB HD/1 GB VRAM/$1999 U.S. Built-to-order options included up to 16 GB of RAM, 2.8 GHz or 3.4 GHz quad-core Core i7 processors, a 2 TB hard drive, a 256 GB SSD, and 2GB of VRAM.

HISTORY PROVIDED BY APPLE-HISTORY


iMac (27-inch, Late 2012)

Maximum Memory: 32 GB 1600 MHz DDR3 SO-DIMM

Repair availability: Parts are still available from Apple

Apple extended its related iMac hingerepair program to cover late 2012 and late 2013 iMacs for up to five years from the date of their original purchase, compared to an original three-year period. Apple will replace the hinge mechanism on affected iMacs at no charge, regardless of warranty coverage.

 


iMac (27-inch, Late 2013)

Maximum Memory: 32 GB 1600 MHz DDR3 SO-DIMM

Repair availability: Parts are still available from Apple

Apple extended its related iMac hingerepair program to cover late 2012 and late 2013 iMacs for up to five years from the date of their original purchase, compared to an original three-year period. Apple will replace the hinge mechanism on affected iMacs at no charge, regardless of warranty coverage.

 


iMac (Retina 5K, 27-inch, Late 2014)

Maximum Memory: 32 GB 1600 MHz DDR3 SO-DIMM

Repair availability: Parts are still available from Apple


 

iMac (Retina 5K, 27-inch, Mid 2015)

Maximum Memory: 32 GB 1600 MHz DDR3 SO-DIMM

Repair availability: Parts are still available from Apple

On May 19, 2015, Apple introduced a new configuration of the 27-inch iMac with Retina 5K display. It features a 3.3 GHz quad-core Intel Core i5 processor with Turbo Boost Speeds up to 3.7 GHz and AMD Radeon R9 M290 graphics.

HISTORY PROVIDED BY MACTRACKER


 

iMac (Retina 5K, 27-inch, Late 2015)

Maximum Memory: 64 GB (Actual) 32 GB (Apple) 1867 MHz DDR3 SO-DIMM

Repair availability: Parts are still available from Apple

On October 13, 2015, Apple introduced a new configuration of the 27-inch iMac with Retina display. It featured updated sixth-generation Intel processors, faster memory, faster graphics, and new Magic peripheral devices.

HISTORY PROVIDED BY MACTRACKER


iMac (Retina 5K, 27-inch, 2017)

Maximum Memory: 64 GB 2400 MHz DDR4 SO-DIMM

Repair availability: Parts are still available from Apple

At Apple’s Worldwide Developers Conference (WWDC) on June 5, 2017, a refreshed iMac model was introduced with Intel Kaby Lake processors, Thunderbolt 3, brighter displays, and Bluetooth 4.2 support.

HISTORY PROVIDED BY WIKIPEDIA