Ah, fair enough.
You might want to look for Mobos with passive cooling as well yeah?
Just on a side note, I have one of those mobos I suggested and it is very quiet, but then it goes onto, do you need it super quiet as its going to be a media centre etc? Which leads to will you brave water cooling? Or is it just to please the animals/partner?
And computer dust breeds! Its not a natural thing! Its some kind of demonic dust!