hard drive, memory speed

PCI ssd read: 2800MB/S, write 1400MB/S, PCI m2 channel port speed 1.2G/S,
memory ddr3, 64-bit theoretical speed 10.664GB/S, actual 7-9GB/S
ssd: SATA port speed 550MB/S
Mechanical hard disk: 60-80MB/s, blue disk, black disk 100MB/s