What is cache memory? - CPU

What is cache memory?

It is a temporary memory storage area which helps to speed up data transfer within a computer. A Microprocessor looks for the data in the Cache memory as the data transferred Cache is much faster. If the data is not found in the cache, the CPU looks for it in the memory.

The following are two types of Cache-
i. Internal or Level 1: In this, the Cache is built into the Microprocessor.
ii. External or Level 2: In this, the Cache is built on a separate chip.

The Internal Cache is the fastest but it is very expensive.