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Assume that we test the performance of two processors, $\text{P}_{1}$ and $\text{P}_{2},$ on a program. We find the following about each:

Processor $\text{P}_{1}$ has a $\text{CPI}$ of $2$ and executes $2$ billion instructions per second. Processor $\text{P}_{2}$ has a $\text{CPI}$ of $1$ and executes $8$ billion instructions per second. Which processor has higher performance on this program?

(Recall that $\text{CPI}$ stands for Cycles Per instruction.)

  1. Processor $\text{B}$
  2. Not enough information to tell
  3. Processor $\text{A}$
  4. They have equal performance
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