Sigh. The reason that we tend not to put the settings that we
use is that there are always so many variable involved that what works for one will not work for another.
This should be your first stop.
Core2 Overclocking Guide (generic guide)http://www.tomshardware.co.uk/forum/259899-11-core-overclocking-guide
Next stop should be a guide for your particular motherboard. Google is your friend.
Go through the guides. Then take your core voltage off Auto and set your memory voltage to factory recommended values. Change the System Memory Multiplier (or whatever your BIOS calls it) from AUTO to 2.00 - whathever you need to set the Memory Frequency to twice the FSB. Then when you increase the FSB, the memory clock will rise in in proportion with it. At an FSB freq of 333 MHz, your memory clock should be at 667 MHz.
Download CPU-Z to check your FSB:RAM ratio. It should be a 1:1 ratio.
Now, start the "increase FSB, test, increase voltage" cycle.
Keep the core voltage under 1.45 volts and the load temps under 70 C.
Keep in mind that these are guides, not cookbooks. YMMV. Because of all the variables, you may not do as well as someone else with a similar system. Or you might do better.----------
Overclocking since 1978 - Z80 (TRS-80) from 1.77 MHz to 2.01 MHz