What is the difference between cache memory and main memory?

What is the difference between cache memory and main memory?

Cache memory is a small, high-speed storage area located inside or very close to the CPU, while main memory (RAM) is larger and slower, used to store data and programs currently in use.

Why is cache memory faster than main memory?

Cache memory is faster because it uses static RAM (SRAM), which is quicker to access than the dynamic RAM (DRAM) used in main memory.

How does the CPU decide what to store in cache memory?

The CPU uses algorithms like Least Recently Used (LRU) to determine which data to keep in cache based on access patterns.

Can I increase cache memory in my computer?

Cache memory is typically built into the CPU and cannot be upgraded separately, but you can improve overall performance by upgrading RAM.

What happens if the cache memory is full?

When the cache is full, the CPU will replace the least used data with new data, following its cache management policy.