No, not really. As Fuad points out, "they will bring some significant performance improvements compared to the previous RV670 generation." RV670 was in general a good design, it was just that the architecture was fairly unbalanced - it had a preponderance of shaders and a dearth of TMUs, explaining the strengths of the card (3DMark, shader-intensive games) and the weaknesses (AA/AF, high-res texture-intensive games). I never quite understood why ATi made this design decision at the time, but that's neither here nor there. If ATi were to simply bump the core and shader speeds and even out the architecture, RV770 stands to be a very competitive product - and as Fuad has pointed out, neither of these is a huge change in and of itself.