T np = 120+160+105+1135+155 = 675 ns (nonpipeline )
Tp = 160+10 = 170ns (pipeline) [Tp = max(stage delay) +buffer ]
............................................................................................................................
performance gain = speed up = performance pipe / performance nonpipe
=Effective Time nonpipe / EffectiveTime pipe
= n *Tnp / (k+n-1) * Tp
.............................................................................................................................
case 1 : for n=10 , k=5
P1= 10*675 / 14* 170 = 2.836
case 2 : n=1000 , k=5
P2= 1000*675 /1004 *170= 3.954
............................................................................................................................
%gain = (P1-P2)/ P1 *100 % = 3.954-2.836/ 2.836 *100% =39.4% answer