[SOLVED] Contacts on the top of a CPU's PCB "skirt"?

jhsachs

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Apr 10, 2009
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This is just curiosity: I got a good look at an i7-3770 in the course of a build I'm working on, and I saw what look like contacts on the top of the PCB "skirt" around the processor. There are about 80 of them in three staggered rows along one side, and four more roughly in a square on another.

I looked up pictures of several other LGA1155 processors, and saw the same thing.

What are these? I don't see anything on the CPU socket that might engage them, and I don't see them on the pinout diagrams I looked up. I'm no hardware wonk, though, so I may be missing something that's in front of my nose...
 
Solution
They might be some sort of engagement studs for rigidity on the little green PCB, or, being as the typical CPU is multiple layers, might facilitate the layering upon a common alignment pattern...?

/guess mode off
:)