Overclockers has a good review of the Alpha PEP66 up in their land of grey, here's a clip: "The base is quite a piece of engineering - a copper insert (a la PAL6035) but the PEP66 sports plastic lugs to ensure level mounting. CuMine mounting is critical considering the CPU's diminutive contact area and Alpha's solution works very well. The mounting clip is properly off-center and is very easy to engage and disengage. As usual, Alpha suggests mounting the fan so that it sucks air through the fins and exhausts out the top; this can also help to cool the board's chipset resting under the Alpha."
FULL STORY @ OVERCLOCKERS (http://www.overclockers.com/articles105/)