I have a Quad6600 GO that i'm trying in this board and I have real problems, I can get it to 350 X 9 and it throttles down to 6 X 9 under 100% Orthos.
The temps are high 50s on 100% load and low 30s at idle so I'm surprised that it' throtlling but it is.

Then if I set the multi to 6 instead of 9 I still cannot get over 350fsb, it will boot at 360 sometimes fails Orthos instantly even on the 6 multi.

Tried quite a lot of voltage settings with no improvement, it's like there is a wall at 350fsb, no amount of voltage on the CPU makes any improvement at all, it does 350 X 9 @ 1.375v and will not do 360 no matter what voltage (up to 1.5v) that is.

Anyone had any luck with this board with a Quad?