I own an Athlon II X3 455 and don't know if it will unlock to 4 cores or not. I can sell it on eBay and get an AMD APU or FM1 Athlon II with 4 cores, or stick with my Athlon and gamble that it does unlock so that I can get the 500 MHz bonus it offers. If I take the gamble, it also means that I need a more expensive motherboard. I hope to get a graphics card a few months after I build the computer, so the APU has an immediate advantage, although I do not need to do this. What option should I go with? And if I sell my Athlon, what price should I sell it for? (It is opened, but not used) THANKS!