overclocking opty

[bigKr33]

I tested my opty on prime95 for 8hr. 30mins before i decided to stop. It was at stock voltage at 2.4ghz. I then tried to run it at 2.5ghz at stock voltage, and 1 of the cores failed pretty much instantly, the other just kept on going, but since the other core failed so quickly i just canceled the whole thing.

In the bios i had the voltage adjusted to stock which is 1.35v, i then tried 1.375, and that same core failed, but a couple of seconds later. Then i bumped up to 1.4v, and it failed after a couple of mins. Now i'm starting to get real disappointed because i have a feeling whats going to happen if i crank the voltage some more. Its going to be the same result. Its just that one core that keeps failing, the other just keeps on going, but like i said if one of the cores just fails so quickly like that, then i have a problem.

I'm trying to avoid going anymore than 10% over stock voltage, but it seems like i'm not going to reach my goal of 2.5ghz+. I'm really disappointed, it ran so well at 2.4 and i made just a 100mhz change, and everything just went down the drain.

Overall i guess i just got a bad stepping. I'm going to keep trying to get that other core stable, but if i have to set it to more than 1.475v then i'm not going to go anymore because beyond that point is going to effect reliablity.

Any suggestions would be nice if anyone has any>

 

[bigKr33]

Well so far so good. I have it set at 1.425 in the bios and suprizingly its still going. It went from 1sec at 1.35v, 5secs at 1.375v, and 5mins at 1.4v. Hopefully i was just on the thresthold so it can do 24hrs. ::Crosses fingers::, my goal is now 2.6ghz.

 

[imported_ST]

stepping? temps?

 

[DrMrLordX]

You can go as high as 1.45v vcore if you need to, so bump it on up if you must.

higher technically, but anything about 1.45v is getting pretty risky.

 

[bigKr33]

stepping:
CCBWE 0607UPBW

My load is only 40-42c, but my pwmic is 56-57c which is worrying me a little. Prime95 is still running though, and has been for over an 1hr now. Its weird how i was failing in a matter of mins, and just changing the voltage from 1.4 set in the bios to 1.425 and still running works.

 

[bigKr33]

But if some reason i fail anytime soon or before 24hrs. I will not go any further. I will leave it at 2.4ghz then if thats the case.

If you really think about it though, 4.8ghz of raw speed isn't all that bad, especially once you start running some dual core games

 

[TrevorRC]

Originally posted by: bigKr33
I tested my opty on prime95 for 8hr. 30mins before i decided to stop. It was at stock voltage at 2.4ghz. I then tried to run it at 2.5ghz at stock voltage, and 1 of the cores failed pretty much instantly, the other just kept on going, but since the other core failed so quickly i just canceled the whole thing.

In the bios i had the voltage adjusted to stock which is 1.35v, i then tried 1.375, and that same core failed, but a couple of seconds later. Then i bumped up to 1.4v, and it failed after a couple of mins. Now i'm starting to get real disappointed because i have a feeling whats going to happen if i crank the voltage some more. Its going to be the same result. Its just that one core that keeps failing, the other just keeps on going, but like i said if one of the cores just fails so quickly like that, then i have a problem.

I'm trying to avoid going anymore than 10% over stock voltage, but it seems like i'm not going to reach my goal of 2.5ghz+. I'm really disappointed, it ran so well at 2.4 and i made just a 100mhz change, and everything just went down the drain.

Overall i guess i just got a bad stepping. I'm going to keep trying to get that other core stable, but if i have to set it to more than 1.475v then i'm not going to go anymore because beyond that point is going to effect reliablity.

Any suggestions would be nice if anyone has any>

Had the same problem with mine.

Took absurd voltages to do anything past 2.55; but I could do 2.55 on stock...

Not all cores are created equal

Originally posted by: bigKr33
stepping:
CCBWE 0607UPBW

My load is only 40-42c, but my pwmic is 56-57c which is worrying me a little. Prime95 is still running though, and has been for over an 1hr now. Its weird how i was failing in a matter of mins, and just changing the voltage from 1.4 set in the bios to 1.425 and still running works.

Also... consider putting a fan over your PWMICs.... the hotter they get the more resistance in them, and it can cause stability problems

Throw a fan over the; see if it gets stable.

 

[bigKr33]

I can't put a fan over it because the pwmic is to the right of the heatsink which my 120mm fan is directly above it. I don't know why its not cooling it, or am i getting the position of the pwmic wrong. If i could take a picture of the inside of my case and show you; you would know what i'm talking about.

I'm loving this opty 165, but i'm getting just a little disappointed, I just wish i could've gone further with less voltage. I just hope and hope it passes 24hrs with the settings right now. Is there anyway to RMA it? Not saying that i would, but its good to know that its an option.

 

[bigKr33]

Oh and how do you know when to adjust ldt voltage because right now its at stock volts (1.20v)

 

[bigKr33]

Yep its official i have a bad stepping. I can't keep the other core stable at only 2.5ghz. Is it possible to RMA it?

 

[imported_ST]

Originally posted by: bigKr33
Yep its official i have a bad stepping. I can't keep the other core stable at only 2.5ghz. Is it possible to RMA it?

you bought a 1.8GHz chip, got it to 600MHz more, then you are going to RMA it for the sake of OCing?

 

[DrMrLordX]

I wouldn't mess with ldt voltage at all. And, yes, you have very little justification for RMAing a chip that operates at stock settings as advertised. Overclocking is never guarenteed.

 

[TrevorRC]

Originally posted by: bigKr33
I can't put a fan over it because the pwmic is to the right of the heatsink which my 120mm fan is directly above it. I don't know why its not cooling it, or am i getting the position of the pwmic wrong. If i could take a picture of the inside of my case and show you; you would know what i'm talking about.

I'm loving this opty 165, but i'm getting just a little disappointed, I just wish i could've gone further with less voltage. I just hope and hope it passes 24hrs with the settings right now. Is there anyway to RMA it? Not saying that i would, but its good to know that its an option.

RMAing it is ILLEGAL, as you have gone outside of the manufacturers spec.

 

[MegaWorks]

I don't get it, what is wrong with 2.4ghz? You have an X2 4800+ out of the box and you're complaining!

 

[bigKr33]

Yeah i know 2.4ghz isn't bad, but one of the cores failed instantly at 2.5ghz at stock voltage (1.35), I tweaked the voltage all the way to 1.425 and it still failed. I only test 2.4ghz for 8hrs at stock voltage, wouldn't you think that it would fail to run 24hrs?

One of the cores is just horrible, its almost worthless, but then again after some test and stuff it still proved to be faster than my 3700@2.75. I really do like this cpu, but now i'm trying to find a new cooling solution because my current heatsink is leaving a dead spot where my pwmic is.

What would be a good heatsink?
http://xoxide.com/zalman-7700-cu-cpu-cooler.html
(or)
http://xoxide.com/thermaltake-blue-orb-ii-cpu-cooler.html

I noticed that the designs of these heatsinks are huge and that i blows directly on the board, but it now just comes down to what cools better.

 

[MegaWorks]

Well then bump the voltage for better results. I got my Opty at 2.7Ghz with 1.55 but I know I can get this with a lower voltage. I think 2.4Ghz is good enough for everything right now, I even got 2.6Ghz @ 1.4v prime stable for 8hrs but the diffrence between the FX-60 and X2 4800+ is not huge!

For a Very good heatsink get the Zalman CNPS9500. I'm telling you that this baby is a beast!

 

[bigKr33]

You have a good point, 2.4ghz is a pretty good overclock, but i feel gypt though. Like i said before i don't even think that 2.4ghz@stock volts is stable for 24hr prime95. I only tested it for 8hrs, well to be exact 8hrs 30mins.

And about that heatsink, i don't think that will do because its very similar to the one i have now the Scythe SCNJ. I think i will go for the thermaltake blue orb because it is really good from what i saw from reviews. 77cfm @ only 17db sounds good to me. And that Zalman is too expensive for my taste, and i don't think it will cool my pwmic good enough , but a good suggestion though because that was the heatsink i almost bought before i got my current one.

And you say crank up the volts, NO!! not only was the heat rediculious for my pwmic (58c tops), but the reliablity won't be an option no more.

 

[JSFLY]

yeh ive got a friend who just bought an opty not too long ago. One core always fails at 2.6 immediately. Other one is rock solid @ 2.7. Luck of the draw i guess.

Edit: also there isnt THAT much of a difference between 2.6 and 2.4. The reason the FX-60 is so expensive is because of the unlocked multipliers more than anything else.

 

[n7]

RMA a CPU that gave you 600 extra MHz for free? :roll:

Be happy, you got an Opteron 180 for the price of a 165.

 

[d3lt4]

You're temps are pretty high. I would put a few more fans in your case. What case do your have. How many fans do you have. I would buy a good HSF if I were you. Try the artic cooling freezer 64 pro. It's cheap and efficient. After that you should be able to get a few more mhz since that's your goal.

 

[imported_Seer]

Get an SI 120 or a TT Big Typhoon. Those are designed to cool PWMIC.

 

[Krakn3Dfx]

Originally posted by: bigKr33
You have a good point, 2.4ghz is a pretty good overclock, but i feel gypt though.

Yeah, I can understand, you got a processor that is specced to run at 1.8GHz, runs at 2.4GHz, but won't run at higher than 2.4GHz stable. That's bogus! AMD policy should be that any CPU, regardless of specced speed, should reliably run at 3GHz. That's just good business policy!