http://www.tsmc.com/english/dedicatedFoundry/technology/20nm.htm
That said, the 20nm still does bother me as I find this unlikely to be cost-effective. No business in their right mind would go straight for 20nm with all the risk involved in Bitcoin. You would definitely test the market with a less expensive process to reduce risk. If their design can do 0.25W/GH/s, then even doing this on 110nm or 65nm their scaling would be more power efficient than everyone else on the market already.
But I'd love to be proven wrong
I don't understand why a semiconductor manufacturer would care what the customer is paying them to manufacture, as long as they have the money.
http://www.linkedin.com/
There is no evidence to prove that this person is you. For all we know, you just found this person's profile online and thought he was a good fit.
I do find it unlikely to be you. A seeming native New Yorker with English as a first language, with so many educated credentials and yet your English skills in your posts here are so poor?
I find at the very least the person in the linkedin profile seems to have a different writing style. Am I the only one who thinks this?
Shouldn't that be "GH/s or gtfo"?
"tits or GH/s"
Anyway, I'm just picking things apart. I have no real reason to trust or distrust the claim of the OP. Everything is possible, although the claims are high.
Please contact him then if you have the time. I'm sure he would like to know some unknown person on the internet is trying to impersonate him.