If you need a FireWire PCI card, read my comparison of FireWire PCI cards . Or try Buy. They also have a reader for Smart Media and Sony Memory Stick. If your PCI slotted Power Mac does NOT have FireWire ports, there are various cards available from various sources. My testing of 12X FireWire CDR's show them to be no faster than 8X CDR's.
Sustained Rate is displayed in the charts.
Peak rates can be impressive but do not reflect typical drive performance.