On Jan 10, 2006, at 11:05 PM, Chris Olson wrote: > To keep up with Firewire 800 you need a hard disk that can deliver > sustained 100 MB/sec I/O speed. The only thing that comes close is > SCSI or SATA. With a hard disk that can deliver FW800 I/O a true > benchmark has to deliver data over the interconnect from RAM to > disk. Transferring from disk to disk will always be throttled by > the I/O bandwidth of the slowest disk, and FW800 far exceeds the I/ > O capability of EIDE disks. Bingo. And we haven't even discussed what I/O bandwidth a PowerBook internal HD can deliver (especially one at a slower rotational speed!). Methinks Trevor *perceives* faster data transfer, but it ain't really happening! ;) j mcd --- John McDaniel ---