I am currently running a stock heat sink from my Athlon x4 64... Its a piece of junk, but my buddy has a heat sink form the Phenom X6 T and I can get it off him for like 10 bucks. I was wondering how many degrees would I drop from the stock to that one, or am I better of buying a Hyper 212+ for 40 bucks after shipping...?
You'd be better of going with that Hyper 212+ for $40, always go aftermarket over stock when possible. And the Phenom II X6 heatsinks are better in a marginal sense, they added two copper heatpipes, but it's still really the same design, you won't see much of a drop if any by switching from a stock heatsink over to yet another stock heatsink.