Drive PLEXTOR PX-128M6S 128GB SSD hdparm -t /dev/sda Timing buffered disk reads: 1036 MB in 3.00 seconds = 344.78 MB/sec Drive Samsung SSD 860 EVO 500GB hdparm -t /dev/sdb Timing buffered disk reads: 1468 MB in 3.00 seconds = 488.79 MB/sec Drive Seagate RSS LLC Expansion 1TB hdparm -t /dev/sdc Timing buffered disk reads: 88 MB in 3.04 seconds = 28.91 MB/sec