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Some facts on Cache Memory

Posted Date: 21-Jul-2010	Category: Desktop Enhancement Utilities	Rating:
Author: K Mohan	Member Level: Gold	Points: 5

Cache memory is a really fast compared to normal memory...

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Function
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Moving data between RAM and the CPU's registers is one of the most time cosuming operations a CPU must perform, simply because RAM is much slower than CPU.

Solution
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A partial solution to this problem is to include a cache memory in the CPU.

When a programme is running and CPU needs to read data or programme instructions from RAM, the CPU checks first to see whether the data is in cache memory. If the data is not there , the CPU reads the data from RAM into its registers,but it also notes a copy of the data into cache memory. The next time the CPU needs that same data, it finds it in the cache memory and saves the time needed load the data from RAM.

K Mohan

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