Thanks for all that, I feel a little more hopeful now. Guess I should wait to see first! A last point on the above is that I also thought I read that 8V was the minimum even though the uguru software (not BIOS) allows 6V to be set it does not work (or =8V anyway)? - again it might be me being wrong. Though unconnected, I know from my current AN8 that only the OTES fans allow 6V and the min on the others is 8V.
I'll report back later in week when I get it setup.