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Usable USB2 bandwidth is about 40 MBytes/sec (you can squeeze out more, but you're talking custom devices and carefully crafted protocols). 80 MBit/sec SCSI is

by kabdib 12y ago

Usable USB2 bandwidth is about 40 MBytes/sec (you can squeeze out more, but you're talking custom devices and carefully crafted protocols). 80 MBit/sec SCSI is 8 bits wide, with pretty good utilization (depends on the drive), so it's going to do pretty well in comparison. I don't know if 1992-era drives could do (say) 100 MBytes/sec, maybe on the outer rims?

bodyfour 12y ago
> 80 MBit/sec SCSI is 8 bits wide No, I converted both of the speeds to MBit to make them easier to compare. The SCSI on a SS10 was 10MB/sec, so 80Mb/sec. The bus utilization on SCSI was high, and the USB2 on a Rpi is slow but not nearly enough to make up for a 6x gap in raw bus speed.