Well The Large All-Copper "AM2" Zalman Im Running On My CPU Has Been On A Socket 754 (My Old Sempron), A Socket 939, My Friends Non + AM2 AND My Current AM2+ Mobo And Considering The Fact That An AM3 CPU Will Work In A AM2+ Slot Im Sure Most ANY AM2 Cooler Will Work, But Just To Be Sure Check With The Manufactuer Of Said Cooler