Keep in mind, though, that the vast majority of PCI busses on PeeCees are 32bit/33MHz (someone correct me if I'm wrong; maybe only the actual pluggable part of the bus is 32/33?), which would mean that you're wrong. Of course, the FireWire adapter is not likely to be connected to the computer anywhere other than to the PCI bus, so it's not like any speed improvement due to FW would be usable.