I\'ve the answer. Please explain how to get the answer. 1. Assume a mipscomputer

Question

I've the answer. Please explain how to get the answer.

1. Assume a mipscomputer has a data path woth the latencies in picoseconds of the individuaks sections given by this table:

If the data path is ideally pipelined into the 5 stages shown, what is the maximum frequency (GHz) for the processor? answer is 4

2. A 1 GHz non-pipelined CPU was upgraded by pipelining into 4 stages and runs at frequency of 3.33 GHz. What is the performance ratio between the CPU if it was ideally pipelined and the updgraded3.33 GHz cpu? annswer is 1.2

Explanation / Answer

1. To find the maximum frequency of the piplened processor, the first step is to check which stage is the slowest, ie takes maximum time to implement. The slowest stage here is the EX stage, which takes 250ps. So the maximum frequency the processor can work at is 1/250ps = 4Ghz

2. The rato = 4 * 1Ghz /3.33 = 1.2

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