memory is a very small size memory, usually at 1MB or less, that resides in the CPU or
is located very near it. This
memory is much faster than the standard RAM and holds data and
instructions most often or recently requested in the system. It works
by anticipating which memory address the processor is going to call
for, and loads that memory before the processor actually calls for it, then
saving the data when the processor used it while discarding the oldest memory to
accommodate the new one.
Since cache memory is mounted on-board, upgrading it
would require upgrading your CPU or motherboard, or by buying a newer machine.