consider three different processors $,$p$1,$ p$2,$ and p$3$ excecuting the same instuction set $.$ p$1$ has a $3$ ghz clock rate and cp$1$ of $1\mathrm{.}5.$ p$2$ has a $2\mathrm{.}5$ ghz clock rate and cpi of $1.$ p$3$ has a $4$ ghz clock rate and has a cpi of $2\mathrm{.}2$