ISRO | ISRO CS 2013 | Question 15

A pipeline P operating at 400 MHz has a speedup factor of 6 and operating at 70% efficiency. How many stages are there in the pipeline?
(A) 5
(B) 6
(C) 8
(D) 9

Answer: (D)
Explanation: Efficiency = Speedup factor/ Number of stages
0.7 = 6 / Number of stages
Number of stages = 8.56 = 9

So, option (D) is correct.

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