Please remember that any mention of competitors, hinting at competitors or offering to provide details of competitors will result in an account suspension. The full rules can be found under the 'Terms and Rules' link in the bottom right corner of your screen. Just don't mention competitors in any way, shape or form and you'll be OK.
A Q6600 is near on invincible, how are you cooling it? I happily ran mine at 3.8Ghz with 1.58vcore for a couple of months.