Here is a heat sink from a computer that was recently parted out. I assume the base is aluminum since it is non-magnetic (and looks like cast aluminum). Is there anything magical about these? Aluminum base with bright copper fins, right? Simply drill out to separate?
http://racer997.smugmug.com/photos/i...kH8hFCb-X2.jpg
http://racer997.smugmug.com/photos/i...g6NxStb-X2.jpg
http://racer997.smugmug.com/photos/i...WdJ2893-X2.jpg
http://racer997.smugmug.com/photos/i...4hXJZ5t-X2.jpg