best ram for this mobo

[ruthless-]

what ram will overclock best with an abit is7? I have some corsairs rev1.2 and they dont overclock very well with this board at all. I remember reading it on oc forums saying its a brick wall that the ch-5 chipped rams and the is7 cant pass.

any help would be appreciated

 

[electech98]

You might receive better help in the motherboard forum.