Models, newest first
iMac models, newest first| Mac | Released | Chip | Screen | UK price |
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| iMac (24-inch, M4, 2024, Four ports) | 8 November 2024 | Apple M4 | 24 in | £1,499Apple Newsroom (UK) — Apple introduces new iMac supercharged by M4 and Apple Intelligence |
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| iMac (24-inch, M4, 2024, Two ports) | 8 November 2024 | Apple M4 | 24 in | £1,299Apple Newsroom (UK) — Apple introduces new iMac supercharged by M4 and Apple Intelligence |
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| iMac (24-inch, M3, 2023, Four ports) | 7 November 2023 | Apple M3 | 24 in | £1,599Apple Newsroom (UK) — Apple supercharges 24-inch iMac with new M3 chip |
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| iMac (24-inch, M3, 2023, Two ports) | 7 November 2023 | Apple M3 | 24 in | £1,399Apple Newsroom (UK) — Apple supercharges 24-inch iMac with new M3 chip |
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| iMac (24-inch, M1, 2021) | May 2021 (month only)Release date | Apple M1 | 24 in | £1,249Apple Newsroom (UK) — iMac features all-new design in vibrant colours, M1 chip, and 4.5K Retina display |
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| iMac (Retina 5K, 27-inch, 2020) | 4 August 2020Available online; Apple gave no in-store day | 3.1GHz 6-core 10th-generation Intel Core i5 | 27 in | £1,799Apple Newsroom (UK) — 27-inch iMac gets a major update |
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| iMac (Retina 4K, 21.5-inch, 2019) | 19 March 2019Available online; Apple gave no in-store day | 3.6GHz quad-core Intel Core i3 | 21.5 in | £1,249Apple Newsroom (UK) — iMac gets a 2x performance boost |
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| iMac (Retina 5K, 27-inch, 2019) | 19 March 2019Available online; Apple gave no in-store day | 3.0GHz 6-core Intel Core i5 | 27 in | £1,749Apple Newsroom (UK) — iMac gets a 2x performance boost |
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| iMac (21.5-inch, 2017) | 7 June 2017 | 2.3GHz dual-core Intel Core i5 | 21.5 in | £1,049Apple UK Store (archived 23 June 2017) — iMac 21.5-inch, 2.3GHz dual-core Core i5, 8GB, 1TB hard drive, £1,049.00 |
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| iMac (Retina 4K, 21.5-inch, 2017) | 7 June 2017 | 3.0GHz quad-core Intel Core i5 | 21.5 in | £1,249Apple Newsroom (UK) — iMac receives major update featuring more powerful graphics, faster processors, Thunderbolt 3 and brighter displays |
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| iMac (Retina 5K, 27-inch, 2017) | 7 June 2017 | 3.4GHz quad-core Intel Core i5 | 27 in | £1,749Apple UK Store (archived 23 June 2017) — iMac Retina 5K 27-inch, 3.4GHz quad-core Core i5, 8GB, 1TB Fusion Drive, £1,749.00 |
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| iMac (21.5-inch, Late 2015) | 13 October 2015 | 1.6GHz dual-core Intel Core i5 | 21.5 in | £899Apple Newsroom (UK) — Apple Updates iMac Family with Stunning New Retina Displays |
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| iMac (Retina 4K, 21.5-inch, Late 2015) | 13 October 2015 | 3.1GHz quad-core Intel Core i5 | 21.5 in | £1,199Apple Newsroom (UK) — Apple Updates iMac Family with Stunning New Retina Displays |
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| iMac (Retina 5K, 27-inch, Late 2015) | 13 October 2015 | 3.2GHz quad-core Intel Core i5 | 27 in | £1,449Apple Newsroom (UK) — Apple Updates iMac Family with Stunning New Retina Displays |
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| iMac (Retina 5K, 27-inch, Late 2014) | 16 October 2014Available online; Apple gave no in-store day | 3.5GHz quad-core Intel Core i5 | 27 in | £1,999Apple Newsroom (UK) — Apple Introduces 27-inch iMac with Retina 5K Display |
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Release timeline
Each model’s release date and the days since the previous model in the same line, counted from the release dates on each Mac’s page.
iMac 21.5-inch
- iMac (Retina 4K, 21.5-inch, 2019)Available online from 19 March 2019 · 650 days after iMac (21.5-inch, 2017) *
- iMac (21.5-inch, 2017)Released 7 June 2017 · same day as iMac (Retina 4K, 21.5-inch, 2017)
- iMac (Retina 4K, 21.5-inch, 2017)Released 7 June 2017 · 603 days after iMac (21.5-inch, Late 2015)
- iMac (21.5-inch, Late 2015)Released 13 October 2015 · same day as iMac (Retina 4K, 21.5-inch, Late 2015)
- iMac (Retina 4K, 21.5-inch, Late 2015)Released 13 October 2015 · first model in this line
iMac 24-inch
- iMac (24-inch, M4, 2024, Four ports)Released 8 November 2024 · same day as iMac (24-inch, M4, 2024, Two ports)
- iMac (24-inch, M4, 2024, Two ports)Released 8 November 2024 · 367 days after iMac (24-inch, M3, 2023, Four ports)
- iMac (24-inch, M3, 2023, Four ports)Released 7 November 2023 · same day as iMac (24-inch, M3, 2023, Two ports)
- iMac (24-inch, M3, 2023, Two ports)Released 7 November 2023 · days since the previous model: — (a month only, no day, is given for one of the two)
- iMac (24-inch, M1, 2021)Release date May 2021 (month only) · first model in this line
iMac 27-inch
- iMac (Retina 5K, 27-inch, 2020)Available online from 4 August 2020 · 504 days after iMac (Retina 5K, 27-inch, 2019) *
- iMac (Retina 5K, 27-inch, 2019)Available online from 19 March 2019 · 650 days after iMac (Retina 5K, 27-inch, 2017) *
- iMac (Retina 5K, 27-inch, 2017)Released 7 June 2017 · 603 days after iMac (Retina 5K, 27-inch, Late 2015)
- iMac (Retina 5K, 27-inch, Late 2015)Released 13 October 2015 · 362 days after iMac (Retina 5K, 27-inch, Late 2014) *
- iMac (Retina 5K, 27-inch, Late 2014)Available online from 16 October 2014 · first model in this line
* One or both dates are not an in-store day: they are the day the Mac was first available from Apple online, or the day it was announced. The days are counted between the dates as shown.
Where Apple gave a release month and no day, no number of days is stated.