Quote Originally Posted by Oese View Post
the card at the ek test is undervolted to 1.125v and on stock clocks, but whatever, very nice temps
I'm not sure if you can say undervolted, because my card has 1.125V stock as well! This might be only a feature for Sapphire cards or newer batches are already better yelding and they lowered vGPU.

If you want lower power consumption try my BIOS from TPU and see for yourself

EDIT: This also can be a reason why some of the reviews are claiming that HD5870 is louder than HD4870 and others are saying opposite.