What Is CPU Cache, and Why Does It Matter?
CPU cache memory is the part of the processor where the most frequently needed data is held and retrieved. Accessing the cache is faster than RAM, so more cache can greatly improve CPU performance.
The amount of cache memory a CPU has is an oft-overlooked number on the specification sheet, but CPU cache is incredibly important to overall CPU performance. If you’ve never paid attention to CPU cache before, read this before buying another.
What Is a CPU Cache?
A CPU cache is a small, fast memory area built into a CPU (Central Processing Unit) or located on the processor’s die. The CPU cache stores frequently used data and instructions from the main memory to reduce the number of times the CPU has to access the main memory for this information. This can greatly improve system performance, as accessing data from the CPU cache is much faster than accessing data from the main memory.
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What Do the Levels of CPU Cache (L1, L2, L3) Mean?
The “levels” of CPU cache refer to the hierarchy of cache memory built into…
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