Drive Crucial CT500MX500SSD1 500GB hdparm -t /dev/sda Timing buffered disk reads: 1600 MB in 3.00 seconds = 532.73 MB/sec Drive SanDisk Corp. Ultra 15GB hdparm -t /dev/sdb Timing buffered disk reads: 458 MB in 3.01 seconds = 152.11 MB/sec Drive PNY USB 3.0 FD 124GB hdparm -t /dev/sdc Timing buffered disk reads: 416 MB in 3.00 seconds = 138.50 MB/sec Drive VIA Labs, Inc. MZYTY256HDHP 256GB hdparm -t /dev/sdd Timing buffered disk reads: 1192 MB in 3.00 seconds = 396.75 MB/sec