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Apple Computing Products:
macOS - Notebook Hardware
Is My MacBook A 64bit Machine?
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<blockquote data-quote="vansmith" data-source="post: 893350" data-attributes="member: 71075"><p>You may not have to hold down those keys. Word on the street is that you should be able to edit com.apple.Boot to have OS X default to a 64-bit kernel.</p><p></p><p>64-bit support will let you use more RAM but maximum capacity for memory is still limited by the motherboard. So, regardless of the increased support for more memory, you may not be able to use more than 4GB. That said, it is reported that the MacBook3,1 can support up to 6GB (though Apple only specifies 4GB as the max). Even though this is possible, you likely won't need that much and I'm sure cost will deter you from going to 6GB.</p></blockquote><p></p>
[QUOTE="vansmith, post: 893350, member: 71075"] You may not have to hold down those keys. Word on the street is that you should be able to edit com.apple.Boot to have OS X default to a 64-bit kernel. 64-bit support will let you use more RAM but maximum capacity for memory is still limited by the motherboard. So, regardless of the increased support for more memory, you may not be able to use more than 4GB. That said, it is reported that the MacBook3,1 can support up to 6GB (though Apple only specifies 4GB as the max). Even though this is possible, you likely won't need that much and I'm sure cost will deter you from going to 6GB. [/QUOTE]
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Apple Computing Products:
macOS - Notebook Hardware
Is My MacBook A 64bit Machine?
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