Quote - I've got a 8120 as well, running at stock speeds. Using a Artic Cooler Freezer Pro 13 heatsink, it runs at less than 40°c during Lux renders and idles at well below room temp.

Remember to turn off turbo mode in the bios. If you don't it switches to a 4-core cpu running at a higher clock speed rather than an 8-core processor. Speed wise it is around 15-20% faster than my 965 Phenom X4. I don't think that's enough to justify the price/power premium.

Given that Piledriver is a development of Bulldozer, personally I would consider the 965 and then wait until the new Steamroller chips appear with a new socket.

Nice to know your stats on the heat sink.  The hyper 212 evo i'm getting is nearly identical only with slightly longer heat pipes.  Turn off turbo mode?  noted and recorded.  Since I'm upgrading my cpu to the 8150 from a Phenom 9600; even if the new cpu was actually 2 meth-head squirrels on a treadmill, it would still justify the upgrade.  My current cpu has a 2448 passmark rating as opposed to the 8150's 8167 score.  This will be a MAJOR upgrade for me.