A 7000 series GPU is a good move. Very powerful architecture with plenty of lifetime. Not sure about the CPU though, it looks like they are going to make the devs lives hell again like they did with the PS3.
I just wonder how far in front PCs will be by 2014 but we've reached a point where we get cracking games on hardware that we wouldn't have thought possible a few years back. The biggest issue is still the forced dumbing down of games though and we can safely assume that will continue.

Also, doesn't the x86 architecture mean 32bit? Seems a bit dated by 2013/4, no?