: How does CPU Cache affect performance?

Question

: How does CPU Cache affect performance?

In: Technology

Answer 1

your computer can store its short term memory in 2 places, RAM or Cache. Cache is right next to the CPU, but small, think of it like a notepad.

RAM is far from the CPU, but large, think of it like a bookshelf.

When your CPU wants to do ANYTHING it needs to use some short term memory. Its kinda slow to get up and go to the bookshelf for everything, so its faster to use cache (the little notepad), but since it is a little notepad, it fills up quickly.

So larger faster Cache lets a CPU spend less time checking RAM than slow small Cache would