Forget anything Thendic says about hardware development on a CPU that's not gonna be out for another year.
The chance of the PPC970 being a success in a Pegasos or an A1-XE is about as likely as an IA-64 working in a Pentium 2 motherboard. Oh, that's right. It doesn't.
64 bit CPU with an FSB of 900MHz should really not be used with a northbridge of 133MHz/32 bit. You would end up putting all your memory and at least the AGP on the CPU card (AGP uses DMA to system memory, and since the memory is on the wrong side of the northbridge... Move it, or end up with chip ram/fast ram all over again.)
This discussion is fruitless. Existing chipsets will handle the G3 and G4 processors quite nicely. If upgraded to the Articia Sa, both these computer series could use 166MHz FSB also (available on the 750FX and the 7450?). But to use any 64 bit daughter cards wouldn't be that useful.
