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What is L2=Cache & L3=Cache and FSB in a computer processor? How much should we look into it at time of purchasing a cpu?

Asked by A. More, 11 Mar '09 03:48 pm
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Answers (2)


L2 cache
L2 cache is a set of memory circuits designed to speed access to important and frequently used data. Early L2 cache designs involved fast static RAM memory chips placed near the CPU. Modern L2 caches involve RAM built directly into the CPU.
L2 cache is typically larger but slower than L1 cache.
L2 cache is an abbreviation of Level 2 cache.
L3 cache

A memory bank built onto the motherboard or within the CPU module. The L3 cache feeds the L2 cache, and its memory is typically slower than the L2 memory, but faster than main memory. The L3 cache feeds the L2 cache, which feeds the L1 cache, which feeds the processor
FSB :---
the Front Side Bus (FSB) is the bus that carries data between the CPU and the northbridge.
Depending on the processor used, some computers may also have a back side bus that connects the CPU to the cache. This bus and the cache connected to it is faster than accessing the system memory via the front side bus.
The bandwidth or maximum theoretical t ...more
Answered by sach dev thakur, 12 Mar '09 10:39 am

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Cache is a special type of memory which is quicker to access. stuff you have recently used will go to your cache so when you perform a function you have just performed it will happen again much faster. L1 and L2 are the level of Cache. L2 feeds L1 level. some chips don't require seperate cahce.
FSB is the front side bus . It is actually a wire connecting the CPU and the northbridge.
Answered by Deepak Joshi, 12 Mar '09 07:46 am

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