If I were to receive a used CPU/Motherboard combo off of someone else in the clan, would I run into any issues? I already own a 600w corsair power supply along with an AMD HD7870 ghz and I plan on receiving an i7 2600k from a clanmate along with a compatible motherboard. The rest of the parts I would purchase off of Newegg. Would there be any problems that I would run into?