The AMD FX-8120 and AMD FX-8150 seem to be the same CPU to me. Is there some hardware feature that makes one superior to the other or is the only difference that the 8150 has been factory overclocked and the 8120 has not?
nope they are exactly the same chip...
you could get a 8150 that clocks higher, or an 8120 that clocks higher then any 8150.
you must have some luck with that.
I've just started with the whole overclocking and I use a FX-8120 at 3.8Ghz So far I'm stable and I have no heating problems at all. 2 hours into a stress test and only hitting temps of 36-39c using a corsair water cooling system.
I would just go with the 8120 because it's very easy to learn how to oc it seems.