Drive Samsung Electronics Co Ltd MZALQ256HAJD-000L2 256GB hdparm -t /dev/nvme0n1 Timing buffered disk reads: 1668 MB in 3.00 seconds = 555.86 MB/sec Drive SanDisk Corp. SanDisk 3.2Gen1 62GB hdparm -t /dev/sda Timing buffered disk reads: 102 MB in 3.00 seconds = 33.95 MB/sec