i have an asus a8n-e rev2
i can tell you the chipset fan is louder than any of the fans in my case but it isnt that loud
also i have found that there is a bug that means you cannot use a 1T command rate on the memory,this is bad for amd 64 as the differrence from 1T to 2T is quite large.to see what i mean click here http://www.bleedinedge.com/reviews/memory/corsair_twinx4400c25/corsair_twinx4400c25_04.html
this is the ram i am using at the moment.
as for overclocking concerns i have just got my 3800+ (not x2) to 2.7 ghz
you can put 1.550v in vcore and lots in the memory. the bios is easy to use.not sure theres much else i can say
hope that helps