Question

5 Why is a two-stage instruction pipeline unlikely to cut the instruction cycle time in
half, compared with the use of no pipeline?
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Answer 1

Answer:

"Here's why a two-stage instruction pipeline is unlikely to cut the instruction cycle time in half, compared with the use of no pipeline; The execution time will generally be longer than the fetch time. ... Thus, the fetch stage must wait until it receives the next instruction address from the execute stage."