Drive Samsung Electronics Co Ltd NVMe SSD Controller SM981/PM981/PM983 1TB hdparm -t /dev/nvme0n1 Timing buffered disk reads: 3974 MB in 3.00 seconds = 1324.57 MB/sec Drive Samsung SSD 870 EVO 1TB hdparm -t /dev/sda Timing buffered disk reads: 1594 MB in 3.00 seconds = 530.74 MB/sec