Quote Originally Posted by ryboto View Post
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.
Undervolting GDDR4 or GDDR5 doesn't make much sense as in idle they use so little energy already, atleast GDDR4 does. Do you have a source to back-up your statement about the power savings?

It's not an easy job to just clock the different parts in the GPU really low when in idle. Validating the massive difference in speed between 3D and 2D would be a PITA. ATI GPUs suffer greatly from non working deviders and the like (at least since the R520), certainly in the low spectrum of clocks. Try to clock an R600 or R670 below 250MHz and you'll notice very odd behaviour. Some frequencies will be completely stable while others won't. Like I said it's a PITA for ATI to validate their GPUs at very low vGPU and frequency because of this.

I don't believe any of these cards will use GDDR5 actually.