Just got a QX9650 for 200. It's the upgrade to my old Q6600. I am not familiar with Q9xxx overclocking, so is it gonna be about the same thing as the Q6600? How much can the QX9650 hit? I saw there are Q9650 and QX9650. So what is the difference? By the way, my mobo is asus maximus formula. Thanks for any suggestions!