Any OEM heatsink sucks, especially AMD's HSFs, which are unnecessarily loud ... I always get a 3rd party heatsink ... You can pricematch the OCZ Vendetta down to about $8 after a $10 MIR ... It's a little awkward on AMD boards (the fan blows up instead of towards the back), but it's still a much better option for not a lot more money ...
http://www.directcanada.com/products...Z%20TECHNOLOGY