they are fake. nvidia has confirmed that no one has been given a card yet. so this is all made up, unless the engineers at tsmc are gamers or something :|
HD5xxx series is back in stock in quantities in major markets and selling like hot cakes over holiday season.
And I love these pr headlines "We are very happy with TSMC" in headline and actually its "We are very happy to work with TSMC but also we are always looking for another oppurtinies."