L3caches
Level 3 caches, commonly referred to as L3 caches or the last-level cache (LLC), form the third level of the memory hierarchy in many modern CPUs. They are designed to bridge the gap between faster per-core caches (L1 and L2) and the slower main memory, and are typically shared among multiple cores on a single processor.
L3 caches are generally larger and slower than L1 and L2 caches but faster than main memory.
The organization of L3 caches varies by architecture. In many designs, the L1 and L2 caches remain
In practice, a hit in the L3 cache is significantly faster than fetching data from main memory,