So I had recently put up a post about my RAM difficulties here, and now am thinking of low cost ways of improving my system.
My current build:
Intel C2Q Q6600 running currently stock 2.4 w/ stock cooler
4x2g OCZ2N800SR4GK Ram DDR2-800 underclocked to 700mhz(see above link on why)
BFG GTX 275OC
Antec Nine Hundred Case
Win 7 64bit
So with my ram inconstancies with all 4 dimms (again see above link) I've been thinking of pulling one and running the 6g stable at 800mhz, but of course I'd be loosing dual channel, but....
Then my theory is that I can start seriously consider pushing the processor to an OC of around 3ghz+. I'd be then looking at a new cpu cooler, along throwing a heatsink and fan on the SB + a fan on the NB, as suggested with this board.
Next stop should be a guide for your particular motherboard. Google is your friend.
If you cannot find anything useful, look for a 680i overclocking article. The 700 nVidia chipset is just a 600 chipset that has been modified to be compatible with the Yorkfield quads.
Go through the guides. Then take your core voltage off Auto and set your memory voltage to factory recommended values. At an FSB frequency of 266 MHz (FSB clock of 1066 MHz), your memory clock should be at 533 MHz. Leave your memory clock linked to the bus clock.
Download CPU-Z to check your FSB:RAM ratio. It should be a 1:1 ratio.
Now start increasing the FSB and core voltage. Do not exceed 1.5 volts or load temps of 70 C.
With better cooling, you should be able to reach at least 3.3 GHz.