True, the 290x is GCN and that's still changing, but GCN itself was completely new when released, I mean it was clean break from the previous VLIW cards.
Kepler can be traced further back, it's more of an evolution from right back to the 8800 cards. Major changes for Fermi, but Fermi and Kepler are very similar. Not saying this is a bad thing. It does mean stability I guess, since they haven't made any radical changes in years, they know their product really well.
Good points. GCN was certainly a brand new architecture and hence it took them a good while to get it fully optimised and nVidia have generally stuck with the tried and tested method but with the odd change here and there.




