$4.(5$ points$)$ Consider a non$-$pipelined processor with a clock rate of $4$GHz$,$ executing a program

which has $1200$ instructions and an average CPI of $4.$ The same processor is upgraded to a pipelined

processor with $5$ stages, but the clock rate is reduced to $2$GHz$.$ What is the maximum speedup

when running the same program on the pipelined processor? $(5$ points$)$ Consider a non$-$pipelined processor with a clock rate of $4GHz,$ executing a program

which has $1200$ instructions and an average CPI of $4.$ The same processor is upgraded to a pipelined

processor with $5$ stages, but the clock rate is reduced to $2GHz.$ What is the maximum speedup

when running the same program on the pipelined processor?