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Consider processors P 1 , P 2 and P 3 executing the same instruction set. P 1 has a 2 . 8 GHZ clock rate

Consider processors P1, P2 and P3 executing the same instruction set. P1 has a
2.8GHZ clock rate and a CPI of 1.4. P2 has a 2.5GHZ clock rate and a CPI of 1.2. P3 has a
4.0GHZ clock rate and a CPI of 2.(1 point each subquestion)
a. Which processor has the highest performance in terms of instructions/sec?
b. If the processors each execute a program in 12sec, find the number of cycles and the
number of instructions.
c. We are trying to reduce the execution time by 30% by increasing the clock rate on P1.
But this will lead to an increase in CPI by 20%. What clock rate should we have to get
this time reduction for P1

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