Types of Memory

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Question 1

Application of Amdahl’s Law:

Answer the following two questions and show your work:

  1. What is the overall speedup if you make 15% of a program 85 times faster?
  2. What is the overall speedup if you make 85% of a program 15 times faster 

Question 2

Consider a dynamic RAM that must be given a refresh cycle 64 times per ms. Each refresh operation requires 150 ns; a memory cycle requires 250 ns. 

What percentage of the memory’s total operating time must be given to refreshes? Explain your answer and show your calculations.

Question 3

List and briefly define three newer nonvolatile solid-state memory technologies.

Question 4

What is the difference between DRAM and SRAM in terms of application? What is the difference between DRAM and SRAM in terms of characteristics such as speed, size, and cost?