Increase your multiplier or your FSB

[Chronictank]

I am a little confused about this issue now, originally i thought maxing your FSB gave you the highest performance increase, but rescently i read that as a result you also put strain on your RAM so a high FSB and a low multi is a bad thing. But then your cpu runs hotter on a higher multi as i need to pump more volts into the cpu to achieve higher speeds, so surely a higher FSB is better?
I found by increasing the FSB i can can get it to about 320 but i cant take the multiplier off 4.5 without causing instability, i decrease the FSB to 300 and i can get it up to 6x.
But in order to run the multi at 9x (max mobo supports) i need to reduce the HTT to 255ish at 1.475v before i stop increasing due to high temps and losing stability (sythe ninja inc next week so should help on the temp part).

I have a Opteron 165, DFI Lanparty NF4 Ultra-D, G.Skill 2GB DDR HS PC3200 (2x1GB) CAS2.5 Dual Channel Kit and currenlt a Zalman Aero Flower.

Current settings:
Ram: 2.5,3,3,6 - 1t @ 2.7v, divider set to 5/6 in the bios but cpu-z says cpu/11

FSB: 240Mhz
Mulit: x9
Volts: 1.4v

 

[Chronictank]

Apologies for the above it was supposed to be 350 as the max fsb not 320.
i read the newbie oc guide, which says to find the max fsb and increase the multiplier after you have found it.
I can get the fsb to 350 with no problem (multi set to 4x),
but as soon as i put the multi up i start getting problems (prime95 getting errors) then i increased the multi and volts until 1.5x as i dont want to go over that, but still couldnt go above 4.5x without stability/heat issues
So i went the other way round, set the multi to 9x then increased the fsb in 5 mhz increments increasing the cpu voltage every time it became unstable up to 1.5v

I didnt however set the memory to 1:2 i just left it as default, perhaps thats where i went wrong?

Edit: i am up to 2.3Ghz thanks to better ram timings (fsb 260 multi x9), i think i could go further as the volts are still only at 1.4

 

[Chronictank]

ah ok, i guess i misunderstood the newbie oc thread.
I thought i was supposed to leave the fsb maxed and bring the multi up. doh!
thanks for all the help