The size of the cache is also one of the important indicators of the CPU, and the structure and size of the cache has a very large impact on the CPU speed, the cache within the CPU runs at a very high frequency, generally operating at the same frequency as the processor, and the efficiency of the work is much greater than the system memory and hard disk. In practice, the CPU often needs to repeatedly read the same block of data, and the increase in cache capacity can significantly improve the CPU internal read data hit rate, without having to go to memory or hard disk to find, in order to improve system performance. However, the cache is very small in terms of CPU chip size and cost.

L3 Cache (L3 cache)

L3 C CPU cache

ache (L3 cache), there are two kinds, the early is external, now are built-in. The actual role of the L3 cache is to further reduce memory latency and improve processor performance for large data-volume calculations. Reducing memory latency and increasing the ability to compute large amounts of data are both very helpful for gaming. And in the server space adding L3 cache still provides a significant performance boost. For example, a configuration with a larger L3 cache utilizes physical memory more efficiently, so its slower disk I/O subsystem can handle more data requests. Processors with larger L3 caches provide more efficient file system caching behavior and shorter message and processor queue lengths.