As for motherboards with 64-bit PCI slots, there are
several. First off, there
are several Alpha motherboards with 64-bit PCI slots. Then there are the boards
for the Pentium III processors with the Serverworks chipsets. There are also
motherboards for Athlon-MP processors with 64-bit PCI slots (some of which are
also 66MHz slots). I know there were earlier motherboards for Pentium II and
Xeon processors with 64-bit PCI slots, but they weren't advertised in the usual
places as they were more of a specialized board, but they were advertised in
some areas.
--
Eric Dittman
dittman(a)dittman.net
Check out the DEC Enthusiasts Club at
http://www.dittman.net/
Forgot to add Apple is selling some of Macs series w/ 66MHz PCI and
some of them do have 64bit PCI.
Cheers,
Wizard