Help Overclocking an Opteron 185 on an ASUS A8N-E Motherboard

[AKruZer]

Ive decided to finally ask for help..

Ive read countless forums and tried many reference overclocks, but i cant seem to match them. Ive seen the posts that most users can get there Opteron 185 to 3.0Ghz by FSB 250x12, 1.41v and lowering the ram timings.

If i try lower FSB and run anything more than 220x12 the machine locks. However by using the 13 multiplier it works fine. I have it set stable with prime at 220x13 with standard mem timings -- 2.5-2-2-5. This gives me a 2900Mhz core. Should i be able to get it to 3000Mhz stable, or would it be too much effort/work/cost to worry about a 100Mhz increase?

I was wondering if any other user has my setup and what have you achieved with it, and how?

ASUS A8N-E Motherboard
Opteron 185 Denmark DC
4x512 Corsair CMX512-3200C2 Timings 2.5-2-2-5

Note..because im uing 4x512, this board will not read the modules past 333Mhz so im doing my best with this. It wil only run 2 moduls at 400Mhz. Could this be the problem? Ive tried slowing the RAM to 266 and 200 to increase FSB but the board just does not seem to like the 12 multiplier.

Would running 2x1024 mem modules fix my problem, or improve my chances of reaching 3000Mhz.

 

[heyheybooboo]

Have you set the hyper transport to 4x ?

Have you locked the PCIe frequency to 100MHz ?

Use the 13 multi - 231x13 = 3GHz = 15% OC

Loosen the memory timings some more to take them completely out of the equation. I'd leave it set at DDR333(166) if that's what 4 sticks defaults w/the mobo (thinking that even with a 15% OC you are below PC3200 specs). If you reach ^^^240fsb'ish you could then drop back to DDR266.

edit: I'd even consider dropping back to 1.375v on your cpu and give her a crank

 

[AKruZer]

Thanks..I seem to have trouble getting it anywhere over 220x13. What should my memory timings be at? Perhaps the ram timings are stopping me going any further?

 

[BTRY B 529th FA BN]

Aren't the Opteron Multi's locked?

what is the multi for the 185/180/175/170 -

yeah, try lowering your HT below 1000, use CPU-z to see what it turns out with different values like 800,600,400,... and also change the memory to 166, i think that combination worked for me