You guys were right, I didn't have the heatsink in correctly. The instructions given to me were vague, but I found a youtube video that demonstrated how to put it in, and now it runs smoothly. The stock heatsink was reaching from 68 - 75 oc, now It's down to 35c.
Looks like you've got it in just right this time. I don't think I've ever met somebody who didn't have to reseat a heatsink now and then. The Hyper 212 is one of the easier ones to work with (love that backplate design), be glad you aren't trying to install something like a Tuniq 120, which for the record, was the most difficult to install cooler I've ever seen. I think it took me three or four tries to get it seated correctly the first time (it was my first aftermarket cooler).