ISA - 8mhz bus
PCI - 132mhz

ISA - No Bus mastering built in
PCI - bus mastering

ISA - flaky PnP
PCI - MS compat PnP

ISA - bus limited inefficient 100bT Full Duplex
PCI - Full Duplex 100bT no problem


PCI all the way!!!

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Death is lighter than a feather - duty heavier than a mountian.