Firstly thanks for your reply Recursion, I too had some luck with my chip under prime95 @x3 for 2-3 hours... but went to play Bf3, and after 5-10 minutes my system locked up, froze I had to hard reset. Bought a 965be now anyway (couldn't afford a FX-6300 and would rather have a Phenom II than any Bulldozer), but it would of been nice to know that Gigabyte core unlock doesn't work very well, if had known this I would of bought a new CPU first, then the second graphics card.