Hard disk is SLOWER than RAM. RAM is dedicated, but hard disk
got Windows running right?
RAM is directly connected to the Northbridge which the CPU is
connected to, but hard disk need more access time. (some older
motherboards have the hard disks connected to Southbridge instead,
so it goes from Northbridge to Southbridge then to the hard disk --
which is SLOW.)
RAM also have many different types, RDRAM, SDRAM, DDR-SDRAM,
DDR-RAM, DDR2 etc. They are much faster than the Windows' Virtual
RAM.
RAM also uses dedicated memory chips.
Therefore the higher amount of RAM, the faster your com.
