My Dual Harper - Asus Z7S WS living review *56K warning*

[Tecman]

Had the same issue, with me it was the memory. I had Kingston (fully compatible according to Asus).
Bought some other mem from jcool.
Now I get up to 429 FSB i.s.o. 396 before with the Kingston mem.
No special settings required, just a slight increase of the Vcore .

I have Kingston pc2-6400 ECC ram and I'm running @436 FSB I have Active cooling on the FB-DIMMS tho.