Opteron overclock..

Mobius 1 · 8 Apr 2006 at 12:57

Ok, so this is my first go at overclocking! And i think i've got it. I've only just started testing the limits of my cpu, but im not taking it any further than 2.8 as that is the best stable speed for an Opteron IMO.

Limit of FSB = 319mhz Before it reboots.

Limit of CPU = Only taking it to 2.8ghz anyway.

My voltage is 1.50v Standard. I had to up the volts 0.1v to get my cpu sitting at 2797.27mhz without erroring out on prime95, is that too much volts? Is that counted as 2.8 by the way or should i up the mhz a tiny bit more to get 2805.59mhz?? Also, i would like to ask if my temps are ok? I am 100% under load and i have been for about 10-15 minutes now, and its been sitting at 40c for a while. I hope 40c isn't damaging my cpu, would it? I am on the stock cooler too, i think i am going to get a Freezer64 pro asap though. Thanks for any feedback! Sorry for all the questions.

Mobius 1 · 8 Apr 2006 at 13:03

sr4470 said:
I'd say 1.65v is ok on air. 40C is well below the temp limit for an Opteron.

Thanks for the feedback. I usually am about 28c idling with my cpu, and about 36 on load. With the stock HSF. And really? I read about 0.1v on top of what you are running standard is most probably the limit. Or maybe im imagining things or read it wrong lol

Mobius 1 · 8 Apr 2006 at 13:06

sr4470 said:
I'm sure 1.65v wont kill it. Having said that, theres no point upping voltage 0.1v for 200mhz. See what you need for 2.9 stable.

Damn! It just gave me an error on prime95.. Ran it for 22 minutes and it gave me one error and no warnings. Maybe i will have to up the voltage a little bit more?

Mobius 1 · 8 Apr 2006 at 13:09

sr4470 said:
Try 1.575v.

Ok then, i will try it now! Should i put my cpu heat threshold on 60c? As i have the option in my bios.

Mobius 1 · 8 Apr 2006 at 13:12

sr4470 said:
That a throttling or shutdown limit?

Complete shut down limit. I have upped the volts to add 0.15v on top of 1.50v

my volts are now. 1.6v

Mobius 1 · 8 Apr 2006 at 13:17

sr4470 said:
Havent used Epox since 440BX\Celeron I days, so not familiar with their bioses...

If you want a quick stability test, try a superpi 32m run.

Ah yeh.. I was going to use that yesterday. But decided for prime 95. I'll give it a go now see what happens. This isj ust the normal not the ultra epox board, dunno if that matters though?

What am i looking for in superpi though? an error?

Mobius 1 · 8 Apr 2006 at 13:22

sr4470 said:
Usually superpi gives a rounding error, if the cpu cant handle it.

Silly question, but how do i identify that? Will it tell me? Sorry for being an utter noob.. Lol..

Mobius 1 · 8 Apr 2006 at 13:29

sr4470 said:
It will say something like "NOT EXACT IN ROUND".

Ah ok then, thanks for the advice

If it fails now, what should i do next? already at 1.6v shouldn't really go any higher..should i?

Mobius 1 · 8 Apr 2006 at 13:35

sr4470 said:
Whats the load temperature like?

Atm sitting nicely on 40c still. occasionally going to 41 but then back down.

Mobius 1 · 8 Apr 2006 at 13:39

Mikey1280 said:
Btw the Epox board automatically puts the volts up to 1.5v, the stock for 90nm opterons is 1.4v, so I wouldnt go above 1.575. You should be able to do 2.8 at 1.5v or maybe 1.55v but as said previously do not go up 0.1v for 100mhz especially if already at 1.55v.

It gave me errors on prime95, at 1.5 for my opteron :-/ Should i put the volts back down then???

Mobius 1 · 8 Apr 2006 at 14:25

Sorry to DP but i put the volts back down to 1.5v and added .5v. Now, i tried the largest test with SuperPi, and it passed all of them, but when i try prime95 again it fails after the first line. What does this mean? :-/

Mobius 1 · 8 Apr 2006 at 14:31

sr4470 said:
Still not fully stable.

Hmm ok.. well im not entirely sure then how to make it stable.. As i don't wanna increase the volts TOO much, but it seems to be only stable in prime95 when the volts are at 1.6v. Is there anyway i can keep the volts the same as i have now (1.554v) But have a stable cpu?

The HTT is on 2x and my RAM is on 100mhz.

Mobius 1 · 8 Apr 2006 at 14:42

sr4470 said:
Try raising chipset and\or HTT voltage slightly.

You dont need them that low.

Ok i'll raise the chipset voltage a tiny bit, but i cant seem to find the HTT voltage. I raised the RAM to 133mhz and the HTT up to 3x.

Edit: Also, the Chipset voltage was on 1.5 i raised to 1.6 as that was the smallest i could raise it.

Mobius 1 · 8 Apr 2006 at 15:33

I have G.skill 3200 ZX 2GB. I'm starting over again following the guide up there, in this forum.. see if i get it right this time

Mobius 1 · 8 Apr 2006 at 15:39

Its ok, i'm new to this and have been having a bit of trouble as after trying that setting in super pi it was fine but prime95 it failed, so i fiddled with some more settings, took the fsb up so the cpu went up to 2.8 and then it rebooted itself, i dunno what im doing wrong :/

Edit: 2.8 is the absolute maximum we should take it to?

Mobius 1 · 8 Apr 2006 at 15:43

sr4470 said:
2.8, possibly 2.85v (both the gskill and corsair ram is TCCD which wont benefit from higher voltages, in fact it will get fried).

So what your saying there is dontp ut it any higher than 2.8?

Mobius 1 · 8 Apr 2006 at 15:45

james.miller said:
1.6v on an opteron? ummm no. That's pretty damn high for an opteron on air. I wouldnt push it past 1.55v

Mine is sitting on 1.55v atm..

Mobius 1 · 8 Apr 2006 at 15:50

james.miller said:
so is my 148. i would never go past that.

Hmmm, everything just errored on me i.e cpuz and firefox, tehn my pc when into a blue screen and restarted, i must be doing something wrong :/

Mobius 1 · 8 Apr 2006 at 16:01

Thinking im going to give up now, fed and and had enough. I've probs damaged the cpu also, as i have had mine up to 1.6.

Mobius 1 · 8 Apr 2006 at 16:10

Ijust cant seem to get my cpu at a stable state. Knew i sohuld have forked out extra for a DFI.