So I installed the drive in a PC, ran the utility to modify the firmware, stuck it back in the Mac, same result. So much for that theory. Then I timed how long it took to duplicate the three 27MB docs on the same drive. Then I timed how long it took to duplicate it on the same drive. The ATTO disk benchmark was run using Express-Pro Tools 2.3 benchmark test with 8MB maximum file size and system disk cache disabled.
Sustained Rate is displayed in the charts.
Peak rates can be impressive but do not reflect typical drive performance.