A new iMac will come with a 32 bit or 64 bit OS preinstalled?

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Will a newly purchased iMac come with a 32-bit or 64-bit operating system?


Snow leopard runs 64 bit on Intel CPUs (PPC processors are no longer supporte), so a new iMac will run the operating system in 64bit mode. Applications will run with 64bit too if there is a 64 bit version, otherwise of course 32 bit software runs fine too.

The kernel will still be 32-bit unless you tweak your configuration.

Rest of the system (applications, services, …) is fully 64-bit (except iTunes for the moment).

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