Intel has several families of central processing units, each with its own purpose (Atom, Celeron, Pentium , Core from i3 to i9, Xeon). Current processors from AMD manufacturers are Ryzen 3, Ryzen 5, Ryzen 7, Ryzen Threadripper.
The rate at which the hard drive spins its platters. The higher the rotational speed, the faster the drive can read and write data.
Most SATA SSDs have read speeds of around 500MB/s while high-end NVMe SSDs are capable of around 7,000MB/s.