Yeah, read that about the Asus 580's but seems odd as they are all meant to be reference cards.
Can't really imagine why Asus would have a batch of "cherry picked" cores, and I can't think of any other reason why any card would clock higher
What intrigues me slightly is the varying default Vcore readings between the different brands.
My POV 580 is set at 1.050 by default.
I know that SkyRocket made a big song and dance about this and actually sent his POV580 back
It may just be the case that POV are playing it safe and it may indeed be possible to reduce the Vcore down abit?
From what I can gather, all 580's dont need much of a bump to hit 875 core stable, which is plenty.