What is the Maximum speed or transfer rate, obtain using scsi, on a G4 Saw Tooth, using a Adaptec card 29160 ? PCI bus is 133 MB Max, using a Baracuda Seagate 40GB 15K RPM 160 but the controller is reading 80 MB not 160? is this because, its not a 64 bit pci slot? like that on the G5? or ? Just trying to get he fastest speed, for less money. TIA Richard