doh, my bad. missed the part you needed 939. i do not know how well the 939 oc's. but for sure the am2 does.
as for price, it prolly did drop, they do that all the time.
depending on how much you want/have to spend, you could do like i just did and go this rout.
am2 3800 65$(there are 2...
not sure how good the 4200 is on oc, but i have read on these forums that one of the 3800s will hit 3ghz. and its only 65$.
http://www.newegg.com/Product/Product.asp?Item=N82E16819103068
i just put together a system i ordered from newegg, i got the 3800 x2 and this mobo
http://www.newegg.com/product/product.asp?item=N82E16813128052
only had one problem with set up. was getting video card error when i had 4gb of ram in, dropped it down to 2 and everything went in flawlessly.
i ordered one from antares last night. They called me this morning and asked if i wanted to change my order to a non GO as it could be shipped today. of course i said no and she told me my order will be shipped when they get them in next week.