Drive AMD R3SL240G 240GB SSD hdparm -t /dev/sda Timing buffered disk reads: 1440 MB in 3.00 seconds = 479.63 MB/sec Drive WDC WD5000AAKX-0 500GB hdparm -t /dev/sdb Timing buffered disk reads: 370 MB in 3.00 seconds = 123.27 MB/sec Drive WDC WD10EZRZ-00Z 1TB hdparm -t /dev/sdc Timing buffered disk reads: 262 MB in 3.01 seconds = 86.98 MB/sec Drive AMD R3SL240G 240GB SSD hdparm -t /dev/sdd Timing buffered disk reads: 646 MB in 3.01 seconds = 214.89 MB/sec