A computer spends 30% of its time accessing memory, 20% performing multiplications and 50% executing other instructions. As a computer architect you have to choose between improving the memory system, multiplication hardware or execution of non multiplication instructions. There is space on chip for only one improvement. Each of the improvement will improve its associated part of computation by a factor of 2.

1. Without performing calculations, which improvement would you expect to give the largest performance increase and why?

2. What speedup would making each of these three changes give?