Quote Originally Posted by alexio View Post
The R600 and R670 have about 9 clock frequency "domains" in the GPU. I think that these domains are all tweaked already in idle. At least the most important domains (TMUs, ROPs and shaders) are all clocked down in 2D mode and vGPU also drastically drops.

If those idle power numbers are real they must use something to completely shut-down parts of the GPU in 2D, which is something I've been waiting for
It's just undervolting/underclocking like the 3000 series. It's probably a harder undervolt, maybe they're also undervolting the ram, since I don't see an option for memory voltage in the bios editor I used for my 3870.