Overclocking Opteron 185

[AgedIdiot]

Best stable clock I can get is 2.79 .(215x13)
Volts do not seem to make a lot , if any , difference - e.g. runs stable at 2.79 with 1.325 v. but would not overclock stable above 2.79 even with 1.375v.
Checked not Ram or Hypertransport by relaxing both (ram does not like above 250mhz).
Temps are fine - on air with Noctua cooler
Am running Asus A8N32-SLI with 2x1gb Crucial Ballis.ram . CPU code/stepping(?) is LCB9E
Would like to get to 3ghz but attempts(if mem serves correct 250x12 and/or 240x12.5) failed - would not boot into bios , never mind windows.
Any advise much appreciated - partic. on ? of volts!! ( am very wary of frying tonight scenario!) have not increased volts for anything but the cpu should I and if so what ?
Or should I simply be happy with what I've got !

 

[AgedIdiot]

Many thanks for replies/advise .

Certainly given me a few ideas and over next few days will try 'em.

? 1.55v - I thought max for this CPU was 1.4v ?

In answer to queries:-
1.Noctua with standard fan.- case is Stacker(1st Edit) with 2x120mm +internal long(cools board) fan (sorry can't remember its name) intake and 1x120mm rear+80mmceiling exhaust.
2. 47C max under load - Prime

Do believe it is the CPU that is maxing out rather than board - but will check.

Would mention that it will boot into windows @2.8/2.85 BUT fails under prime - always the same core

 

[AgedIdiot]

Well I have been happy running mine at 2.95 for the last few months

Clairvoyant ; At what settings fsb/muti/hypert/ram? I assume 1.5v?

What cooling do you have? - Temps under load?

Still concerned that 1.5v may be

 

[AgedIdiot]

It's def. the CPU that is the problem - booted happily at 250x10 etc
Tried , again at 2.8 (216x13) - at low/standard volts failed on Core 0 after 40-50sec; increased to 1.4v - stable BUT temps +5C on load.
Not happy getting such a high increase in temps for such a small increase in performance
Better cooling needed before I try again ; may also try removal of IHS but will probably leave this until warranty expires.
steppings = LCB9E 0630BPMW

Many , many thanks for all replies - Happy Xmas to you all

 

[AgedIdiot]

Did a bit of research to find that LCB9E 0630BPMW steppings are ,allegedly, poor clockers.

CCBBE 0615DPMW are ,allegedly, good .