5. You are about to purchase a new system, and you are deciding between two almo

Question

5. You are about to purchase a new system, and you are deciding between two almost identical computers. The two are exactly the same except for one component. System A has a processor running at 1.2GHz and system B has a processor running at 1.8GHz. If we assume that the processors are responsible for %75 of the overall performance. Which of the two systems do you buy if speed is your concern? How much is your selected computer faster than the other option? 5. You are about to purchase a new system, and you are deciding between two almost identical computers. The two are exactly the same except for one component. System A has a processor running at 1.2GHz and system B has a processor running at 1.8GHz. If we assume that the processors are responsible for %75 of the overall performance. Which of the two systems do you buy if speed is your concern? How much is your selected computer faster than the other option? 5. You are about to purchase a new system, and you are deciding between two almost identical computers. The two are exactly the same except for one component. System A has a processor running at 1.2GHz and system B has a processor running at 1.8GHz. If we assume that the processors are responsible for %75 of the overall performance. Which of the two systems do you buy if speed is your concern? How much is your selected computer faster than the other option?

Explanation / Answer

Since both systems are identical except processor it is good choice to choose the processor which is having high speed

Hence we should chooce System B

given

speed of the System A processor = 1.2 Ghz

speed of the system B processor = 1.8 Ghz

speed up from system A to B = 1.8/1.2 = 1.5

overall performance that depend on processor = 0.75

over all speedup of system B over system A according to andahls law = 1.5/(0.25*1.5 + 0.75) = 1.41176

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