BitcoinBrothers out of Germany claimed in November this year to have an ASIC based on a 16nm 3D finFET and have plans to unleash 300-400 PH onto the network in Q1 2015. They also claim each of their 6 PH machines will consume 0.9 MW. So using your initial assumption, it appears they are poised take a little more than 50% of the network (assuming they add 300 PH) using only 45 MW.
I haven't dug very deeply into this claim but they seem to be echoing the claims of KNCminer as far as the 16nm 3D finFET based ASIC. I haven't seen power consumption estimates from KNC however.
Not sure where (electricity rate) they plan to drop their bomb, but the numbers you have posted put their power consumption at 0.15W/G.
Official claims we have (also from my internal report):
- Spondoolies Tech 0.05W/G mid 2015
- KnCMiner 16nm 0.07W/G early 2015
- Cointerra 16nm 5X (?) Q1 2015 (5X refers to their TerraMiner IV I guess)
- Bitfury sub-0.1J/G mid-year 2015
Not sure what to put on the Chinese ASIC manufacturers when it comes to official claims (Bitmain, Avalon, InnoSilicon, who else is significant or still in business?).
BlackArrow has made claims using a finFET asic chip as well at the .07W/gh - claiming 20TH from about the same draw as the 1TH of the x3. BS or not - we will have to see.