btw - medialab101 - yes, I can get the cards to run 660+ BUT they arent stable - at least its not when running 3 cards.
The temps go too high, and Windows crashes / needs a restart - which loses coin if it happens overnight... I prefer to run slower, cooler, more stable.

sphornby - I have tried BAMT - which didnt run - just crashes on boot.  Im not a Linux guy, but I would like to give it a go at some point.  Thanks for the xubuntu tip - never heard of it actually...