The Processor Cache is memory that store data (code,
commands etc.). it is used with the processor to facilitate the access of data
from the system's main memory or RAM. Processor Cache reduces the
average time to access memory. The processor cache typically consists of two
levels, which are the L1 cache and the L2 cache.
The L1 cache is directly accessed by the computer's processor and
holds data that the processor needs to execute instructions. The L2 cache pulls
information from the system's main memory, which is then accessed by the L1
cache.
Processor Cache is much faster than RAM so provides better
responsiveness if you have more cache. It is a data storage section of the CPU
that next set of instructions and data that is currently needed.
The more Processor Cache you have (512 is better than 256), the
more data you could have in the cache for faster processing. Modern CPU no
longer uses external cache. Both L1 and L2 are parts of the CPU now.
Modern desktop PC and server CPUs have three independent caches:
an instruction cache to speed up executable instruction fetch, a data
cache to speed up data fetch and store, and a translation lookaside buffer
(TLB) used to speed up virtual-to-physical address translation for both
executable instructions and data.
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