COMPUTER HARDWARE
STORAGE DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the Access time for SRAM
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15 milliseconds
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20 nanoseconds
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25 nanoseconds
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30 nanoseconds
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60 milliseconds
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Explanation:
Detailed explanation-1: -Because SRAM does not need to refresh, it is typically faster. The average access time of DRAM is about 60 nanoseconds, while SRAM can give access times as low as 10 nanoseconds.
Detailed explanation-2: -Static RAM (SRAM) has access times as low as 10 nanoseconds. Ideally, the access time of memory should be fast enough to keep up with the CPU.
Detailed explanation-3: -The access time of cache memory is 100 ns and that of the main memory is 1 sec. 80% of the memory requests are for reading and others are for write. The hit ratio for reading only accesses is 0.9.
Detailed explanation-4: -average memory access time = hit time0 + miss rate0 * (hit time1 + miss rate1 * miss penalty1 )
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