<P> All editions aside from Starter support both IA - 32 and x86 - 64 architectures; Starter only supports 32 - bit systems . Retail copies of Windows 7 are distributed on two DVDs: one for the IA - 32 version and the other for x86 - 64 . OEM copies include one DVD, depending on the processor architecture licensed . The installation media for consumer versions of Windows 7 are identical; the product key and corresponding license determines the edition that is installed . The Windows Anytime Upgrade service can be used to purchase an upgrade that unlocks the functionality of a higher edition, such as going from Starter to Home Premium, and Home Premium to Ultimate . Most copies of Windows 7 only contained one license; in certain markets, a "Family Pack" version of Windows 7 Home Premium was also released for a limited time, which allowed upgrades on up to three computers . In certain regions, copies of Windows 7 were only sold in, and could only be activated in a designated region . </P> <P> Support for Windows 7 without Service Pack 1 ended on April 9, 2013, requiring users to update in order to continue receiving updates and support . Microsoft ended the sale of new retail copies of Windows 7 in October 2014, and the sale of new OEM licenses for Windows 7 Home Basic, Home Premium, and Ultimate ended on October 31, 2014 . Professional currently remains available to OEMs, primarily as part of downgrade rights for Windows 8 and 10 licenses . OEM sales of PCs with Windows 7 Professional preinstalled ended on October 31, 2016 . The sale of non-Professional OEM licences was stopped on October 31, 2014 . Mainstream support for 7 ended on January 13, 2015 . Extended support will end on January 14, 2020 . </P> <Table> Minimum hardware requirements for Windows 7 <Tr> <Th> Component </Th> <Th_colspan="2"> Operating system architecture </Th> </Tr> <Tr> <Th> 32 - bit </Th> <Th> 64 - bit </Th> </Tr> <Tr> <Th> Processor </Th> <Td> 1 GHz IA - 32 processor </Td> <Td> 1 GHz x86 - 64 processor </Td> </Tr> <Tr> <Th> Memory (RAM) </Th> <Td> 1 GB </Td> <Td> 2 GB </Td> </Tr> <Tr> <Th> Graphics card </Th> <Td_colspan="2"> DirectX 9 graphics processor with WDDM driver model 1.0 </Td> </Tr> <Tr> <Th> Free hard drive space </Th> <Td> 16 GB </Td> <Td> 20 GB </Td> </Tr> <Tr> <Th> Optical drive </Th> <Td_colspan="2"> DVD - ROM drive (Only to install from DVD - ROM media) </Td> </Tr> </Table> <Tr> <Th> Component </Th> <Th_colspan="2"> Operating system architecture </Th> </Tr>

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