To the best of my knowledge, you would need a version of Excel that is
written for a 64 bit processor to get any gain there. As to dual/multiple
processors, only if it is competing against other processes - excel itself
doesn't take advantage of multiple processors.

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Regards,
Tom Ogilvy

"N Lennox" wrote in message
...
What would be the absolute fastest hardware you could run
Excel on? Would excel recalcing performance improve with
a 64-bit processor or dual processor machine?