I agree and TSMC would get in to real trouble leaking any information about Amd/any customer chips.Why do you think TSMC would have any clue at all about Big Navi's performance?
Just wonder why you think that. Sure they manufacture the chips, but why do you think that would translate into knowing the performance of the end product? Which includes AMD drivers... you think AMD are giving TSMS the drivers and asking them to build/test the cards?
I don't think they are.