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[OFFICIAL] FX-8320/FX-8350 Vishera Owners Club - Page 676

post #6751 of 67357
Quote:
Originally Posted by twitch_alucard View Post

Just recently someone posted the link to the IBT that was meant for AMD in here and I downloaded that as I was using just the regular download of IBT 2.54. My question is why am I able to be stable at 4.8Ghz @ 1.45V with temps of 62C on the regular IBT 2.54 yet with the AMD IBT that I got I cannot get stable on 4.8Ghz @ 1.52V with temps of 59C.... What should I go by? I tried cranking my volts to 1.55 just to see if I could get it stable for 10 runs at that but it seems to poop out randomly in the test.

If you mean the AVX-enabled IBT, this is normal. It produces an insane amount of heat, and it will be harder to make it successfully pass the test. The AMD FX-83** are very bad at SSE/normal float, but with AVX they perform like mad. This IBT is used by myself for the simple reason that if I happen to start using an application that uses AVX, at least I know that if I am IBT-AVX stable, the app won't explode on me. This is equivalent/similar to Prime95.

The highest I could get/tried to validate was at 4700-ish MHz. I had to tweak the DRAM VREF CA on CPU, otherwise it will not pass above 4.64GHz @ 1.475v

reminder:
Quote:
DRAM VREF CA on CPU: Adjusting this reference voltage can help increase stability during stress tests - if rounding errors are reported above or below the expected numerical value (Prime95, Super Pi). If the rounding error shows a value higher than expected was returned from DRAM, then increase the Vref to 50.5% and see if it helps. The same principal can be used to lower Vref if the value returned is lower than the expected value.

Edited by Tarnix - 1/10/13 at 2:56am
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post #6752 of 67357
Got my 8350 in, looks like I got super lucky with this one. Sadly I'm on air cooling at the moment (though I suspect I did a god-awful job with the thermal paste, as usual) so I'm afraid to push for 5Ghz, especially since near stock voltages are netting me 56C+ on a Thermalright Silver arrow. Correct me if I'm wrong though tongue.gif



and here's a 3DMark bench for fun, with my 680 starring as the bruiser.

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post #6753 of 67357
Quote:
Originally Posted by Olafthewimpy View Post

Got my 8350 in, looks like I got super lucky with this one. Sadly I'm on air cooling at the moment (though I suspect I did a god-awful job with the thermal paste, as usual) so I'm afraid to push for 5Ghz, especially since near stock voltages are netting me 56C+ on a Thermalright Silver arrow. Correct me if I'm wrong though tongue.gif



and here's a 3DMark bench for fun, with my 680 starring as the bruiser.


Hey man

I dont mean to be the bringer of bad news but you are using the wrong IBT. There is no way in hell that you are stable at 4.8ghz with 1.38vcore lol also u need to run it at least 20-30 times minimum. Then when u think u are stable run it 30 times at high to very high

BTW do you know what your batch number is?

You should be getting close to 75-90gflops lol try this one:
IBT AVX.zip 4327k .zip file

edit: gave you wrong one this one is the right one. sorry about that
Edited by gertruude - 1/10/13 at 4:37am
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post #6754 of 67357
^^^^Regardless of the level of stress he's using, that's still a very good chip IMO.^^^^
Quote:
Originally Posted by m0bius View Post

My sammys will do 2400, but I have to use 1.5v+ with 11-11-11-28 2T timings.

Cheers for that, I'll give it a try.
Quote:
Originally Posted by hatrix216 View Post

Ah thanks for the info. Once I turned off those features it did indeed stop.

I actually got to 4.7 today ! Sitting at 1.48 volts. I guess the problem before was my ram. My ram is supposed to be rated at 1866 but it defaults to 1600 in the BIOS and looking at newegg reviews seems like it does the same thing for everyone else too. G.SKILL manual says you have to manually set timings and speed but when I set them to the correct timings I can't get past 4.4.

My ram is at auto now and the auto timings are 11-11-11-28 which is crazy high...

http://valid.canardpc.com/2646675

It could be you need a little more CPU/NB volts for stability with the higher RAM speed. I found that was necessary with the 8320 and 8350 I've had.
Quote:
Originally Posted by twitch_alucard View Post

Just recently someone posted the link to the IBT that was meant for AMD in here and I downloaded that as I was using just the regular download of IBT 2.54. My question is why am I able to be stable at 4.8Ghz @ 1.45V with temps of 62C on the regular IBT 2.54 yet with the AMD IBT that I got I cannot get stable on 4.8Ghz @ 1.52V with temps of 59C.... What should I go by? I tried cranking my volts to 1.55 just to see if I could get it stable for 10 runs at that but it seems to poop out randomly in the test.
Quote:
Originally Posted by Tarnix View Post

If you mean the AVX-enabled IBT, this is normal. It produces an insane amount of heat, and it will be harder to make it successfully pass the test. The AMD FX-83** are very bad at SSE/normal float, but with AVX they perform like mad. This IBT is used by myself for the simple reason that if I happen to start using an application that uses AVX, at least I know that if I am IBT-AVX stable, the app won't explode on me. This is equivalent/similar to Prime95.

The highest I could get/tried to validate was at 4700-ish MHz. I had to tweak the DRAM VREF CA on CPU, otherwise it will not pass above 4.64GHz @ 1.475v

Good answer, and good info cheers. thumb.gif
post #6755 of 67357
I get less heat with the AVX enabled IBT but I can't get it stable even with .10v more than what I have stable with the non AVX enabled IBT. I get more heat with the IBT non avx but its stable.
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post #6756 of 67357
I ran at stock for a few days, mainly because was away from home and let the PC fold, but I'm currently grinding my way back to stable 4.7 Will post results once it passes 10 IBT runs.
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post #6757 of 67357
Quote:
Originally Posted by Red1776 View Post

Here, make up your own mind CS biggrin.gif


http://www.techpowerup.com/reviews/Intel/Ivy_Bridge_PCI-Express_Scaling/1.html
Whhhhaaaattt??? Think for myself??? heheh . Oh I suppose I can do that, after all, I am kind of an AMD guy biggrin.gif
Thanks for the link
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post #6758 of 67357
Quote:
Originally Posted by wolvers View Post

^^^^Regardless of the level of stress he's using, that's still a very good chip IMO.^^^^

Anyone can pass @ lower voltages with IBT 44gflops with only 10 runs. what i was pointing out is he should be using more runs.

i bet if he tried running OCCT and prime it wouldnt pass

Just to prove my point : 5ghz 10 run IBT without avx


Edited by gertruude - 1/10/13 at 7:01am
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post #6759 of 67357



Edited by Tarnix - 1/10/13 at 6:51am
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post #6760 of 67357
Quote:
Originally Posted by PaddieMayne View Post

THE OUTSIDE COOLING

THE JOB SO FAR

NOW TO GET ON WITH THE COMPUTER SIDE OF THE SET UP, I WILL POST SOON.....

Looks like a very professional job Paddie! What is the temp outside?
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