Mac OS VersionsOS X 10.8.2 "Mountain Lion"| Introduced: | 25/7/2012 | | Minimum hardware: | Intel Core 2 Duo, 2 GB RAM, 8 GB HD | | Minimum software: | Upgrade available only for 10.6.8 or above
| | Availability: | Upgrade via Mac App Store (download only, £13.99) | | Introduced |
| | Notes: | Not compatible with AppleWorks |
OS X 10.7 "Lion"| Introduced | 20/7/2011 | | Minimum hardware: | Intel 64, 2 GB RAM, 7 GB HD | | Minimum software: | Upgrade available only for 10.6.8 or above | | Availability: | Mac App Store, USB Flash drive available on second hand market only | | Notes: | Not compatible with AppleWorks; iCloud introduced; Mac App Store |
OS X 10.6.8 "Snow Leopard"| Introduced | 8/6/2009 | | Minimum hardware: | Intel, 1 GB RAM (2GB recommended) | | Availability: | DVD box sets | | Notes: | - Last version to support Rosetta
- From 10.6.6 Mac App Store is build in, hence, this is the best upgrade route for "Tiger" users wishing to upgrade to 10.8.
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OS X 10.5.8 "Leopard"| Introduced | 26 /10/2007 | | Minimum hardware: | Intel or PPC, 1 GB RAM (2GB recommended) | | Availability: | DVD box sets | | Notes: | - Last version supporting PPC
- Can only be upgraded directly to 10.6.8
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| OS version | Nickname | Dates | CPU | Min RAM | Min Disc | Distribution | | 10.4 | Tiger | 29/4/2005 | PPC, Intel* | 256 MB | 3 GB | DVD, CD | | 10.3 | Panther | 24/10/2004 | PPC G3-G5 | 256 MB | 1.5 GB | CD | | 10.2 | Jaguar | 23/8/2002 | PPC G3-G5 | 256 MB |
| CD | | 10.1 | Puma | 25/9/2001 | PPC | 128 MB | 1.5 GB | CD | | 10.0 | Cheetah | 24/3/2001 | PPC G3-G4 | 128 MB | 800 MB | | | 1.0 - 9.2.2 | Classic | 1984-2001 | PPC G3 |
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| Free download |
* First Intel iMac & iBook released in January 2006, PPC phased out in August
Classic supported up to 10.5
Rosetta supported up to 10.6
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