Drive Seagate ST500DM002-1BC142 500GB hdparm -t /dev/sda Timing buffered disk reads: 364 MB in 3.01 seconds = 120.82 MB/sec Drive OCZ-VERTEX3 MI 120GB SSD hdparm -t /dev/sdb Timing buffered disk reads: 1506 MB in 3.00 seconds = 501.92 MB/sec Drive T-FORCE 250GB hdparm -t /dev/sdc Timing buffered disk reads: 1572 MB in 3.00 seconds = 523.38 MB/sec Drive WDC WD3200BEVT-22ZCT0 320GB hdparm -t /dev/sdd Timing buffered disk reads: 172 MB in 3.00 seconds = 57.31 MB/sec