It's worth pointing out that the L1 cache and its associated logic is the only\*...

blattimwind on Nov 21, 2019 | parent | context | favorite | on: Myths Programmers Believe about CPU Caches (2018)

It's worth pointing out that the L1 cache and its associated logic is the only* way a core talks to the outside world, including all I/O ever. With that in mind it is easy to understand why it is so crucial to performance.

* there might be some minor exceptions