The Fop38 is VERY high pitched and sounds like a blowdrier. I would suggest the Taisol CGK742092. I have my Duron 600@1050 @1.85 and is @49C under full load and about 42C under idling. (This is without much thermal grease, so I think I may get lower when I get some Arctic silver from a friend.) The default is a 21 CFM fan, but you can get a fan that pushes more, or get a 80mm fan adapter, and put a big 80mm fan with a decent CFM, but something that won't kill your ears.