i just got crysis sp demo, and i already overclocked my 8600 gts, but i want to get just a little bit more performance from my processor. my core 2 duo 6320 runs at 1.86 ghz and ive heard you can overclock them to 2.6 to 3.0 ghz so i was wondering ive got a stock cooler and stock fan, how much more do you think i would need to overclock it if i want to get 5 or more fps on crysis? also ive tried going on my bios and it says that "none of these fields are changeable", how am i supposed to overclock if i cant change the settings using my bios?