The Intel-based iMac is a series of Macintosh desktop computers designed, manufactured and sold by Apple Inc. It is a member of the iMac family. It is one of four desktop computers in the current Macintosh lineup, serving as an all-in-one alternative to the Mac Mini, and sits below the performance range iMac Pro and Mac Pro. The only other choice I do not really recommend, but your 2007 IMac may run okay on it is once your IMac is upgraded to OS X 10.6.8, purchase an email download code for OS X 10.8 Mountain Lion. To install OS X 10.8 Mountain Lion, 10.9 Mavericks (currently unavailable) or OS X 10.10 Yosemite.you need one of these Macs.

Your Mac provides several tools to help you identify it. The simplest is About This Mac, available by choosing About This Mac from the Apple menu  in the upper-left corner of your screen. The other is the System Information app. Learn how to use these tools to identify your Mac.

If you don’t have your Mac or it doesn’t start up, use one of these solutions instead:

• Find the serial number printed on the underside of your Mac, near the regulatory markings. It’s also on the original packaging, next to a barcode label. You can then enter that serial number on the Check Coverage page to find your model.
• The original packaging might also show an Apple part number, such as MMQA2xx/A (“xx” is a variable that differs by country or region). You can match the Apple part number to one in the list below to find your model.

List of iMac models

iMac models are organized by the year they were introduced, starting with the most recent. Click the model names to get detailed technical specifications or to view the user guide.

iMac models from 2012 and newer can run the latest version of macOS. For models from before 2012, the latest compatible operating system is noted.

2020

iMac (Retina 5K, 27-inch, 2020)
Model Identifier: iMac20,1, iMac20,2
Part Numbers: MXWT2xx/A, MXWU2xx/A, MXWV2xx/A
Tech Specs: iMac (Retina 5K, 27-inch, 2020)
User Guide: iMac (Retina 5K, 27-inch, 2020)

2019

iMac (Retina 5K, 27-inch, 2019)
Model Identifier: iMac19,1
Part Numbers: MRQYxx/A, MRR0xx/A, MRR1xx/A
Tech Specs: iMac (Retina 5K, 27-inch, 2019)
User Guide: iMac (Retina 5K, 27-inch, 2019)

iMac (Retina 4K, 21.5-inch, 2019)
Model Identifier: iMac19,2
Part Numbers: MRT3xx/A, MRT4xx/A, MHK23xx/A
Tech Specs: iMac (Retina 4K, 21.5-inch, 2019)
User Guide: iMac (Retina 4K, 21.5-inch, 2019)

2017

iMac Pro
Model Identifier: iMacPro1,1
Part Numbers: MQ2Y2xx/A, MHLV3xx/A
Tech Specs: iMac Pro (2017)
User Guide: iMac Pro (2017)

iMac (Retina 5K, 27-inch, 2017)
Model Identifier: iMac18,3
Part Numbers: MNE92xx/A, MNEA2xx/A, MNED2xx/A
Tech Specs: iMac (Retina 5K, 27-inch, 2017)
User Guide: iMac (Retina 5K, 27-inch, 2017)

iMac (Retina 4K, 21.5-inch, 2017)
Model Identifier: iMac18,2
Part Numbers: MNDY2xx/A, MNE02xx/A
Tech Specs: iMac (Retina 4K, 21.5-inch, 2017)
User Guide: iMac (Retina 4K, 21.5-inch, 2017)

iMac (21.5-inch, 2017)
Model Identifier: iMac18,1
Part Numbers: MMQA2xx/A, MHK03xx/A
Tech Specs: iMac (21.5-inch, 2017)
User Guide: iMac (21.5-inch, 2017)

2015

iMac (Retina 5K, 27-inch, Late 2015)
Model Identifier: iMac17,1
Part Numbers: MK462xx/A, MK472xx/A, MK482xx/A
Tech Specs: iMac (Retina 5K, 27-inch, Late 2015)
User Guide: iMac (Retina 5K, 27-inch, Late 2015)

iMac (Retina 4K, 21.5-inch, Late 2015)
Model Identifier: iMac16,2
Part Numbers: MK452xx/A
Tech Specs: iMac (Retina 4K, 21.5-inch, Late 2015)
User Guide: iMac (Retina 4K, 21.5-inch, Late 2015)

iMac (21.5-inch, Late 2015)
Model Identifier: iMac16,1
Part Numbers: MK142xx/A, MK442xx/A
Tech Specs: iMac (21.5-inch, Late 2015)
User Guide: iMac (21.5-inch, Late 2015)

iMac (Retina 5K, 27-inch, Mid 2015)
Model Identifier: iMac15,1
Part Numbers: MF885xx/A
Tech Specs: iMac (Retina 5K, 27-inch, Mid 2015)
User Guide: iMac (Retina 5K, 27-inch, Mid 2015)

2014

Imac 2008 Sierra Drive

iMac (Retina 5K, 27-inch, Late 2014)
Model Identifier: iMac15,1
Part Number: MF886xx/A
Tech Specs: iMac (Retina 5K, 27-inch, Late 2014)
User Guide: iMac (Retina 5K, 27-inch, Late 2014)

iMac (21.5-inch, Mid 2014)
Model Identifier: iMac14,4
Part Number: MF883xx/A, MG022xx/A
Tech Specs: iMac (21.5-inch, Mid 2014)
User Guide: iMac (21.5-inch, Mid 2014)

2013

Imac 2008 Sierra 2500hd

iMac (27-inch, Late 2013)
Model Identifier: iMac14,2
Part Number: ME086xx/A, ME088xx/A
Tech Specs: iMac (27-inch, Late 2013)
User Guide: iMac (27-inch, Late 2013)

iMac (21.5-inch, Late 2013)
Model Identifier: iMac14,1
Part Number: ME086xx/A, ME087xx/A
Tech Specs: iMac (21.5-inch, Late 2013)
User Guide: iMac (21.5-inch, Late 2013)

2012

iMac (27-inch, Late 2012)
Model Identifier: iMac13,2
Part Number: MD095xx/A, MD096xx/A
Tech Specs: iMac (27-inch, Late 2012)
User Guide: iMac (27-inch, Late 2012)

iMac (21.5-inch, Late 2012)
Model Identifier: iMac13,1
Part Number: MD093xx/A, MD094xx/A
Tech Specs: iMac (21.5-inch, Late 2012)
User Guide: iMac (21.5-inch, Late 2012)

2011

Imac 2008 Sierra Patch

iMac (27-inch, Mid 2011)
Model Identifier: iMac12,2
Part Number: MC813xx/A, MC814xx/A
Newest compatible operating system: macOS High Sierra 10.13.6
Tech Specs: iMac (27-inch, Mid 2011)
User Guide: iMac (27-inch, Mid 2011)

iMac (21.5-inch, Mid 2011)
Model Identifier: iMac12,1
Part Number: MC309xx/A, MC812xx/A
Newest compatible operating system: macOS High Sierra 10.13.6
Tech Specs: iMac (21.5-inch, Mid 2011)
User Guide: iMac (21.5-inch, Mid 2011)

2010

iMac (27-inch, Mid 2010)
Model Identifier: iMac11,3
Part Number: MC510xx/A, MC511xx/A
Newest compatible operating system: macOS High Sierra 10.13.6
Tech Specs: iMac (27-inch, Mid 2010)
User Guide: iMac (27-inch, Mid 2010)

iMac (21.5-inch, Mid 2010)
Model Identifier: iMac11,2
Part Number: MC508xx/A, MC509xx/A
Newest compatible operating system: macOS High Sierra 10.13.6
Tech Specs: iMac (21.5-inch, Mid 2010)
User Guide: iMac (21.5-inch, Mid 2010)

2009

iMac (27-inch, Late 2009)
Model Identifier: iMac10,1
Part Number: MB952xx/A, MB953xx/A
Newest compatible operating system: macOS High Sierra 10.13.6
Tech Specs: iMac (27-inch, Late 2009)
User Guide: iMac (27-inch, Late 2009)

iMac (21.5-inch, Late 2009)
Model Identifier: iMac10,1
Part Number: MB950xx/A, MC413xx/A
Newest compatible operating system: macOS High Sierra 10.13.6
Tech Specs: iMac (21.5-inch, Late 2009)
User Guide: iMac (21.5-inch, Late 2009)

iMac (24-inch, Early 2009)
Model Identifier: iMac9,1
Part Number: MB418xx/A, MB419xx/A
Newest compatible operating system: OS X El Capitan 10.11.6
Tech Specs: iMac (24-inch, Early 2009)
User Guide: iMac (24-inch, Early 2009)

iMac (20-inch, Early 2009)
Model Identifier: iMac9,1
Part Number: MB417xx/A, MC019xx/A
Newest compatible operating system: OS X El Capitan 10.11.6
Tech Specs: iMac (20-inch, Early 2009)
User Guide: iMac (20-inch, Early 2009)