Tiger 32 bit or 64 bit OS

Do not have a problem but have read somewhere that Tiger is a 32 bit operating system, is this true or is it a 64 bot OS, what about Leopard is leopard 64 bits ?

Thanks

Posted on Jan 3, 2008 4:36 AM

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2 replies

Jan 3, 2008 4:48 AM in response to Freddie Herbst

http://en.wikipedia.org/wiki/MacOS_Xv10.4#Improvements

It depends what part of Tiger you are referring to. Generally, it's a 32bit OS but it has some 64bit libraries to allow for greater memory addressing.

http://en.wikipedia.org/wiki/MacOS_X_v10.5#Developertechnologies
http://www.apple.com/macosx/technology/64bit.html

Leopard has support for full 64bit but can run 32bit applications at the same time.

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Tiger 32 bit or 64 bit OS

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