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6Dec19 evening Q42

42Given below are two statements, one is labelled Assertion(A) and the other is labelled as Reason(R).
Assertion (A): The clock speed of CPUs has not increased significantly in recent years.
Reason (R): Software now being used is faster and therefore processors do not have to be faster.
In the light of the above two statements, choose the correct option from those given below:
  • Option : C
  • Explanation :
    There was once a time when CPU clock speed increased dramatically from year to year. in the 90s and early 2000s processors increased at incredible speeds, shooting from 60 MHz Pentium chips to gigahertz level processors within a decade. But around 2005, the top CPU clock speed of the high-end processors settled around 4 GHz and hasn't increased much since then. Now greater improvements in power come from multi-core processor designs. As a result, we see chips like AMD's recent offerings, with a dramatically increased number of cores. These modern transistors and Chips have increased the power of processors. Thus CPU clock speed need not to increase.
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