A certain computer has a three-stage pipeline where Stage 1 takes 40 ns, Stage 2 takes 26 ns, and Stage 3 takes 29 ns to operate. What is the maximum achievable MIPS value (to one decimal place) for this computer

MIPS = 10.53

Explanation:

To find the maximum allowable MIPS, we need to obtain the total maximum time for an instruction to be executed by the CPU.

Total time to complete 1 instruction for the computer will entail the instruction passing through the 3 stages.

Total time to complete 1 instruction = 40 + 26 + 29 = 95 ns = (95 × 10⁻⁹) s

MIPS = millions instructions per second and it is given as

(Number of instruction)/(execution time × 1,000,000)

MIPS = 1/(95 × 10⁻⁹ × 10⁶)

MIPS = 10.53

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