The key here is the choice of track count will determine the actual shrink. 14LPP - CPP = 78nm MMP = 64nm. CPP X MMP = 78 x 64 = 4992 7LP - CPP = 56nm MMP = 40nm . CPP x MMP = 56 x 40 = 2240. So in terms of CPP x MMP the shrink is 2240/4992 = 0.45 . 55%. But when you bring in track count which determines the actual cell size the shrink can go upto 70%. 7SoC is enough to provide perf required for servers. 14LPP 9T to 7SoC 6T = 70% shrink 14LPP 7.5T to 7SoC 6T = 65% shrink 14LPP 9T to 7HPC 9T = 55% shrink. 7SoC 6T is aimed at a real sweet spot of power, perf and maximum density. AMD needs 7HPC only for Zen 2 desktop. I think servers and notebooks are better served by 7SoC. http://btbmarketing.com/iedm/docs/29-5 Narasimha_Fig 2.jpg imo the graph plots the most efficient regions on the freq/power curve for the respective processes. It does not cover the entire freq range upto fmax.