The Mac isn't completely 64-bit (eh hem).  With Leopard 10.5 (!), the kernel and frameworks have been made 64-bit.  I'm not certain that anything in that screenshot regards it either.  Multiple CPUs isn't a 64-bit thing - I've been running dual processors since 2000 under Windows 32-bit (and Linux has supported them for a lot longer). ;P

Some edumication:

http://www.theregister.co.uk/2003/07/07/mac_os_x/

http://en.wikipedia.org/wiki/Mac_OS_X_v10.4 (scroll down to "Improvements")

http://developer.apple.com/macosx/64bit.html

There is no 64-bit Carbon support until Leopard - one MUST use Cocoa otherwise.  And the Carbon GUI is completely 32-bit until Leopard.  Even with Leopard, there are still gaps.  This is the main, overriding reason why Maxon has not made a 64-bit version of Cinema 4D for MacOS:

http://www.carbondev.com/site/?page=64-bit+Carbon

Unfortunately, 0.0001% of the developers in the entire universe use (or even know about) Apple's proprietary Objective-C language.  There are stubs and wrappers to use C/C++ with it, but, imho and that of a large number of developers, it ain't worth the aggravation.  J++ and C# and Objective-C - say no to OS-dependent programming languages for multi-platform dev.

And finally, can anyone provide a list or link thereof with MacOS X 64-bit software?  I see that Adobe Photoshop translated early.  Can't find much else four years later.

http://www.geekpatrol.ca/2006/09/32-bit-vs-64-bit-performance/

*But seriously - is it possible to have a 64 bit cpu on a 32 bit board? SO what exactly is it that makes a mobo 32 or 64 bit anyway?

No.  The mobo needs to support the 64-bit addressing and register spaces of the cpu and memory.

See ya...

C makes it easy to shoot yourself in the foot. C++ makes it harder, but when you do, you blow your whole leg off.

 -- Bjarne Stroustrup

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