On the specs it says its compatible with Socket 754 / 939 / 940 / AM2 / LGA 775.
What socket is an AM3?
Here is the heatsink in question
http://www.newegg.com/Product/Product.aspx?Item=N82E16835207004
What socket is an AM3?
Here is the heatsink in question
http://www.newegg.com/Product/Product.aspx?Item=N82E16835207004