CPU $1($ with a clock speed of $6$E$9$ cycles$/$second$)$ runs the following double precision floating point arithmetic algorithm:

Z $=[($U $+$ V$)-($W$*$X$)/($Y$2)]$

And achieves a performance level of $2\mathrm{.}5$E$-9$ seconds to compute the resultant, Z$.$

CPU $2($ with a clock speed of $4$E$9$ cycles$/$second$)$ runs the same double precision floating point arithmetic algorithm:

Z $=[($U $+$ V$)-($W$*$X$)/($Y$2)]$

And achieves a performance level of $2\mathrm{.}0$E$-9$ seconds to compute the resultant, Z$.$

Which CPU has the more efficient architecture for this algorithm?

Provide a detailed, quantitative explanation which supports your choice.