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cs313-2006-t2-problemset8-solution

cs313-2006-t2-problemset8-solution - CPSC 313 06W Term 2...

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CPSC 313 06W Term 2 Problem Set #8 - Solution 1. SRAM stands for Static Random Access Memory. It can be typically found in caches, on or off the core. It is fast and persistent, but it requires more transistors so is more expensive per unit of memory that Dynamic RAM. 2. DRAM stands for Dynamic Random Access Memory. It can be typically found in the Main Memory that is attached to the motherboard. It consists of only one transistor and one capacitor per bit, so it is cheaper and can be made denser (less surface area per bit) than SRAM. However, DRAM is slower compared to SRAM, and requires periodical recharge. 3. One reason that is indicated by question 1 and 2 is that cache and memory have different prices and speeds. Therefore, using a cache/memory hierarchy is able to strike the best balance between them by keeping the small but frequently-accessed data/code in the cache, and putting the other part in the low-speed but cheap, enormous memory.
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