One usual fallacy is to consider the computer with the largest clock rate as having the largest performance. check if this is true for p1 and p2.

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Jenny Rich

15 December, 02:03

One usual fallacy is to consider the computer with the largest clock rate as having the largest performance. check if this is true for p1 and p2.

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Ahmad Robbins · Answer 1

A computer with the largest clock rate does not mean it will have the largest performance. By overclocking you may be able to reach the maximum capacity of a CPU, but perhaps buying an upgraded CPU with more processing power will out do the former computer minus the overclocking method to the latter upgraded PC.

Gunnar Lang · Answer 2

Processor Clock Rate CPI Instructions

P1 4 GHz 0.9 5.0E9

P2 3 GHz 0.75 1.0E9

According to these values; when we calculate TP1 and TP2;

TP1 = 0.9 x 5 x 109 / 4 x 109 = 1.125 seconds

TP2 = 0.75 x 109 / 3 x 109 = 0.25 seconds

Thus, in this case P2 has better performance because of its lower CPI and number of instructions.