The Zalman Reserator is a fanless water cooling solution. Basically an enormous tower with fins that acts as a passive radiator that you pipe into your exisitng case and use CPU and VGA blocks to cool the components. On an X58 motherboard you should probably still cool the PWMs and northbridge with a fan but I guess you could get one of the better known motherboards that have water cooling blocks for these components too.

As mentioned, will definitely add $$ to your build though.

Have you considered oil immersion? :P