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.

Indy500 · 8 Apr 2006 at 13:01

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

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

Indy500 · 8 Apr 2006 at 13:05

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.

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?

Indy500 · 8 Apr 2006 at 13:08

-Tauren- said:
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?

Try 1.575v.

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.

Indy500 · 8 Apr 2006 at 13:10

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

That a throttling or shutdown limit?

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

Indy500 · 8 Apr 2006 at 13:16

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.

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?

Indy500 · 8 Apr 2006 at 13:21

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

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..

Indy500 · 8 Apr 2006 at 13:26

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

It will say something like "NOT EXACT IN ROUND".

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?

Indy500 · 8 Apr 2006 at 13:33

-Tauren- said:
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?

Whats the load temperature like?

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.

Mikey1280 · 8 Apr 2006 at 13:36

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.

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? :-/