[gentoo-user] {OT} USB 3.0 hard drive speed test

[Grant]

I'm testing this USB 3.0 bus-powered hard drive:

http://www.amazon.com/gp/product/B0041OSQ9S

and I get:

# hdparm -tT /dev/sdb
/dev/sdb:
Timing cached reads:   8006 MB in  2.00 seconds = 4004.33 MB/sec
Timing buffered disk reads: 252 MB in  3.01 seconds =  83.63 MB/sec

# hdparm -tT /dev/sdb
/dev/sdb:
Timing cached reads:   8230 MB in  2.00 seconds = 4116.54 MB/sec
Timing buffered disk reads: 252 MB in  3.02 seconds =  83.55 MB/sec

# hdparm -tT /dev/sdb
/dev/sdb:
Timing cached reads:   8446 MB in  2.00 seconds = 4224.36 MB/sec
Timing buffered disk reads: 230 MB in  3.02 seconds =  76.28 MB/sec

Wikipedia says USB 3.0 has transmission speeds of up to 5 Gbit/s.
Doesn't MB/sec denote mega*bytes* per second?

- Grant