This is the location where the AM2/K8 mounting bracket passes through the heatsink before being clipped on to the processor.  The LGA 775 mounting clip uses the same pins that are found on the stock Intel heatsink.  You can see the 15-horizontal fins that the heatpipes run though thus providing you a wind a huge amount of surface to pull the heat away from the processor.

Personally I like this view the best of any of them, since the top of the SilverWind reminds me of something out of a space movie.  The outer edges of the fins look kind of like wave so perhaps that is the intent of that design.

You can see the four ends of the two heatpipes, the fan used on the Silver is a 9255 Frameless Fan that rotates at variable speed of 1700 ~ 2700 RPMs putting out between 42.36 and 60.38 CFM.  If you are curios what the weight of heatsink is, it is 550 grams ± 5 grams.

Here is the bottom of the LGA 775 mounting bracket and you can see that it has four screws located in and as I would already guess you have figured out these 4-screws have to be removed to get the bracket off so you can install make the heatsink work on an AMD board.

The base of the SilverWind come sans any protective covering but none the less the base was in what I would say was in good condition, there were no visible scratches, dents or corrosion on the surface and using a straight-edge the base appeared to absolutely flat.  That means we will apply a minimal amount of thermal paste to the base and the processor.