FrostyTech has a review a plain-jane aluminum heatsink today. Remember the days before heatsinks where the gigantic structures they are now? Think way back, and check out Frosty's review;
"In this review Frostytech will be examining the Glacialtech Igloo 7311 Silent AMD Athlon 64 heatsink. Can this simple extruded aluminum heatsink keep the Athlon64-class processor below running cool? We'll soon find out... As AMD releases its energy efficient processors with power loads in the range of 65W and 35W, simple extruded aluminum heatsinks are once again becoming common."