Build a special memory bank in motherboard

Question

In the motherboard what if we build a special memory bank?

Answer 1

That is already two times faster than the main memory access. That is called a level 2 cache or an L2 cache. What when we make an even smaller however faster memory system directly in the microprocessor's chip? That manner, this memory will be accessed at the speed of the microprocessor and not the speed of the memory bus.

That is an L1 cache that on a 233-megahertz (or MHz) Pentium is 3.5 times faster than L2 cache, that is two times faster than the access to main memory.

A number of microprocessors have two levels of cache built right in the chip. In this case, the motherboard cache the cache which exists between the microprocessor and main system memory becomes level 3 cache.