| Short for Level
2 caching, L2 is also commonly referred to as secondary cache or
external cache. Unlike Layer 1 cache, L2 cache is commonly located on
the motherboard, although with most new processors it is being found on
the processor. When L2 cache is found on the processor, if cache
is found on the motherboard, it is properly known as L3
cache.
First introduced with the Intel
Pentium and Pentium Pro computers. In some cases this required that
the user install or have installed optional L2 cache for L2 support.
L2 Cache on computers can range from 64KB to 2MB in size. However,
early versions of the Intel Celeron had
no L2 cache.
Also see: Cache, L3
cache, Processor definitions
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