over volting the mobo northbridge can bring stability at high fsb overclocks,thats the only reason volts should be added.
overclocking the cpu-nb doesnt overclock the ram,the fsb does that.
overclocking the cpu-nb brings higher minimum frames in multi gpu setups,and decreases the latency on the motherboard cache.
to gain a high cpu-nb 1.35v is fairly safe,i can get to 4ghz cpu-nb using that voltage,and as it doesnt really add to the cpu temps,why not
if you cant select higher than x10 cpu-nb multiplier or greater than 2000mhz cpu-nb,you have to increase fsb to achieve higher cpu-nb frequencies,inevitably your will have to drop your ram divider or at the very least slacken ram timings aswell as increase ram voltage,cpu voltage and the aforementioned cpu-nb voltage aswell as the posibility of increasing mobo nb volts if you have gone above 250mhz fsb for instance.
cpu-nb to 2600 =260fsb and x10/2000mhz cpu-nb frequency
260fsb means your ram will need dropping down one notch,possibly timings slackened one notch like :rated 5-5-5-15 2T to overclocked 6-6-6-16 2T,just to get it to boot,then work it down once you know its possible.i had to increase ddr2 from 1.8 to 2.192 to be stable.
260 fsb might take 1.4v,just remebere overclcking is a gamble and your chip may do better than others,or not.
skill doesnt really come into it at this level-being stubborn and relentless does Edited by MightyMission - 8/9/11 at 11:47am