This:
Aluminum does not 'give up its heat' better than copper! Let me repeat this once more; aluminum does NOT 'give up its heat' better than copper. It is true that, in general, aluminum will radiate heat better than copper but radiation is such a miniscule part of heat transfer in a computer system as to be deemed completely inapplicable.
Is a complete oxymoron...
Aluminum doesn't give up its heat better than copper yet it radiates its heat better than copper yet it's of no consequence? What utter BS, this is why I stopped going to Overclockers.com a couple of years ago, they speak in complete riddles there.
If Al radiates heat better than Cu then yes, it is in fact "giving up its heat better" you can't have it both ways no matter how much you'd like to.
A hybrid design HSF is beneficial in that it will perform better (if properly constructed that is, IE, no air gaps between the Cu slug and the Al fins) than a pure Al 'sink yet be lighter by a large margin than a fully Cu 'sink thereby putting less strain on the board and lowering the likelyhood of it ripping away from the board do to a slight jar such as hitting a pothole in your car on the way to/from your favorite LAN party location.
