^^(replying to sky)
i would argue against in this case though. nvidia put on only 2x 6pin and keep boasting about low power usage. i would be worried that you can fry the hardware with a little overclocking. the amd option however seems to leave plenty of headroom before any danger is met.

a turbo feature is nice, but really only useful for people who leave things stock. and when nvidia partners try launching higher clocked chips, will their turbo go even higher, or end up leaving both at nearly the same speed. and because of the turbo, are they selling their stock chips for more (good thing), buy removing OC headroom (bad thing).

this could be a good thing to have, or a pure marketing thing. right now im just trying to grasp the whole picture but will keep my final opinion until after reviews.
although i still applaud them for getting such a strong gpu from under 300mm2 of chip space.