Linux: Comparativa caixa externa USB 2.0 i 3.0 amb hdparm

USB 2.0

/dev/sdc:
 Timing cached reads:   25366 MB in  2.00 seconds = 12699.41 MB/sec
 Timing buffered disk reads: 116 MB in  3.01 seconds =  38.60 MB/sec

/dev/sdc:
 Timing cached reads:   27466 MB in  2.00 seconds = 13750.05 MB/sec
 Timing buffered disk reads: 118 MB in  3.05 seconds =  38.71 MB/sec

/dev/sdc:
 Timing cached reads:   26534 MB in  2.00 seconds = 13282.15 MB/sec
 Timing buffered disk reads: 118 MB in  3.04 seconds =  38.82 MB/sec


USB 3.0

 /dev/sdc:
 Timing cached reads:   29370 MB in  2.00 seconds = 14703.78 MB/sec
 Timing buffered disk reads: 448 MB in  3.01 seconds = 148.63 MB/sec

/dev/sdc:
 Timing cached reads:   29162 MB in  2.00 seconds = 14599.85 MB/sec
 Timing buffered disk reads: 448 MB in  3.02 seconds = 148.40 MB/sec

/dev/sdc:
 Timing cached reads:   29672 MB in  2.00 seconds = 14855.88 MB/sec
 Timing buffered disk reads: 448 MB in  3.02 seconds = 148.44 MB/sec