OS X Tiger supporting 64-bit for Intel

cprince

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May 8, 2007
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Hi! My friend's boss want to have an Intel-based Mac with 16GB of RAM(please don't ask me why). I want to know if the version of OS X Tiger for Intel supports 64-bit addressing scheme. I already know that the version for PowerPC G5 supports 64-bit. Thanks.
 

TheStu

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Sep 15, 2004
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After perusing their website, and the fact that Intel Tiger is not significantly different from PPC Tiger (not being 64bit being a significant difference) I think it is fair to say that as much RAM as you can cram into the Mac Pro, OS X can handle it.

I say Mac Pro since it is the only Mac that can hold more than 4GB of RAM due to size restrictions.
 

bibo911

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Jul 9, 2007
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Geekbench ran 64-bit benchmarks on Intel Mac's, so I am guessing that Tiger is 64-Bit on Intel Macs. http://www.geekpatrol.ca/2006/...vs-64-bit-performance/

Anyway, Leopard (OS X 10.5) is coming out in October, and Apple has said that it is 64-bit, "From the ground up." (Whatever that means. I'm guessing that anyone who can spend $$$ for 16GB of RAM is going to splurge and spend $129 to upgrade to OS X 10.5.
 

TheStu

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Originally posted by: bibo911
Geekbench ran 64-bit benchmarks on Intel Mac's, so I am guessing that Tiger is 64-Bit on Intel Macs. http://www.geekpatrol.ca/2006/...vs-64-bit-performance/

Anyway, Leopard (OS X 10.5) is coming out in October, and Apple has said that it is 64-bit, "From the ground up." (Whatever that means. I'm guessing that anyone who can spend $$$ for 16GB of RAM is going to splurge and spend $129 to upgrade to OS X 10.5.

I think what it means is that all the apps that ship with Leopard will be built 64bit, as opposed to Tiger where some are still 32bit.
 

Nothinman

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Sep 14, 2001
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Last I looked the kernel and some of the core libs were 64-bit but the majority of userspace wasn't, so while the kernel will support that memory each process will still be limited to somewhere between 2G and 4G, depending on how Apple did the VM split.

I think what it means is that all the apps that ship with Leopard will be built 64bit, as opposed to Tiger where some are still 32bit.

I think you mean "most".