Level 1 caching
Updated: 04/26/2017 by Computer Hope
Level 1 caching is also called L1 cache, primary cache, internal cache, or system cache. With computer processors, L1 cache is cache built into the processor that is the fastest and most expensive cache in the computer. The L1 cache stores the most critical files that need to be executed and is the first thing the processor looks at when performing an instruction.