I vote abit ip35 pro. i oc'd to 9x400 using 1.44vcore(~1.36 w/vdroop) 1:1 no problem!
I use this 24/7 with C1E and EIST enabled. My temps are 34c idle and 59c on load using
a tuniq tower.
I think that is pretty damn amazing. I was not expecting this kind of oc at all, more like maybe 3.2ghz or something.
However im not sure about the x38 boards, maybe those are better oc'ers. but all i know is im rock solid.
anywayz im on a hot streak picking mobos, lol.
abit nf7-s--->dfi lanparty nf4 ultra-d---->abit ip35-pro
all are epic mobo's imo.