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Hello,

> Thanks for the answer.  So it sounds like one can then buy the dual
> processor card and a 9600 uniprocessor and just swap them, right?
Exacly. Too bad dual G3 or G4 cards are still way overpriced.
On the other hand - you may want a cheap (single CPU) G3 card with big and fast L2 cache instead. The 604es have the better FPUs but they're seriously hampered by the slow bus ( max. 50MHz -> 400MB/s ), even more so if you have two of them - they share the same bus, so for anything that's not purely CPU-bound you'd be better off with a G3 - the fast L2 cache vastly improves things. In a 9600 you can use a 604ev with L2 cache on the CPU card though, this combination would be even better than a G3 I guess, but you can get G3s at 500MHz and more while the 604s max out at about 300MHz ( the fastest ones IBM used ran at 375MHz but I've never seen or heard of a Mac with a 604 faster than 300MHz )

> Next stupid question.  The 7300-8600 systems all seem to have
> interchangeable processors right?
Most do - see everymac.com for a comprehensive reference.

>  If so, does that mean that one could stick a 9600 dual processor board in say a 7300?
Yes and no. The 9600 had a slightly different CPU slot so it could use 604ev boards, these won't work in other Macs. Most CPU cards that work in a 7300 should work in a 9600 though.

> And no, I wasn't expecting MacOS to run on the resulting system :-)
You'll want to run -current, it has some serious bug fixes / improvements over 2.0, mainly in interrupt handling.

have fun
Michael

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