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post #5751 of 10072
Quote:
Originally Posted by Sohryu76;13310509 
Papa, normally I'd agree with you... but the Prime95 blend test will show an unstable SandyBridge processor OC rather quickly. Which would be the same as your Stress CPU you linked for overnight.

I've never had any gaming crashes or issues folding on a SB processor if it passed 8-12 hours.
So i dont need to run Small FFT's?

And whats the fastest way to tell if im not giving enough Vcore? This will help me speed up the time it takes to find the right voltage.

Also, ASUS AI Suite II says is telling me that my Vcore is getting up to 1.46 while im idle, though it only does so periodically and for a split second it seems. Is this normal for SB?
Edited by nawon72 - 4/28/11 at 3:53pm
post #5752 of 10072
Quote:
Originally Posted by nawon72;13311166 
So i dont need to run Small FFT's?

And whats the fastest way to tell if im not giving enough Vcore? This will help me speed up the time it takes to find the right voltage.

Also, ASUS AI Suite II says is telling me that my Vcore is getting up to 1.46 while im idle, though it only does so periodically and for a split second it seems. Is this normal for SB?

that is a bit high... do you have LLC on? anything on auto?

But yeah running the Blend will tell you about your voltages pretty fast. And if your OC is unstable at all, including your memory since your BCLK multi affects your ram speed as well.

Generally if your workers are failing you aren't giving enough voltage.

I'll have to go back and look at your numbers again though

EDIT**
I take it back... 1.46 for 4.9 is reasonable. my bad. its because for a split second your PC does something and your computer kicks up the voltage thinking your CPU is going to get a load.
    
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post #5753 of 10072
Quote:
Originally Posted by Sohryu76;13310509 
Papa, normally I'd agree with you... but the Prime95 blend test will show an unstable SandyBridge processor OC rather quickly. Which would be the same as your Stress CPU you linked for overnight.

I've never had any gaming crashes or issues folding on a SB processor if it passed 8-12 hours.

I've normally found that StressCPU will fail about as quickly as Prime will. Normally something will show up within an hour or two. I just prefer to run it overnight to make sure.

About the only thing I use Prime for is to get me in the ball park. I'll make a change, run Prime for 10 minutes then make the next change. I repeat until it fails within 10 minutes or so and then start tweaking the bios or lowering the OC until it runs for at least 15 minutes. At that point I shut it down, run a 32m HyperPi watching for any glitches which would represent a problem, then fire up StressCPU and let it rip while I'm still using the system. If something is amiss you should know it right off the bat.

Running the 3DMark is to make sure the video cards are running correctly, especially if one is overclocking them. Prime, OCCT, IBT, StressCPU, etc. don't test the video system which is where 3dMark comes in. I've seen more than my share of systems that would run OCCT, Prime, StressCPU, etc. for days at a time without failing then crash in a game. A couple of passes of 3dMark normally shows if there video issue that needs to be dealt with. Some will use Furmark instead, but I've seen it damage hardware so I don't like using it.

The main thing is that people find a way that works for them and gives them consistent results. I've refined my technique over more years than I care to count and know how to respond to the results I get from it. I can usually tell within an hour if a system will be stable or not. The overnight run is just to confirm it.
Quote:
Originally Posted by nawon72;13311166 
So i dont need to run Small FFT's?

And whats the fastest way to tell if im not giving enough Vcore? This will help me speed up the time it takes to find the right voltage.

Also, ASUS AI Suite II says is telling me that my Vcore is getting up to 1.46 while im idle, though it only does so periodically and for a split second it seems. Is this normal for SB?

A crash, hard lock or BSOD is usually lack of vcore, but when one core fails a prime test while the others plug away it is generally a mch or ref voltage. That was for Socket 775 so SB and the other iCore systems could be different on the mch and ref voltages as I'm not sure what the equivalent is on them. But that would at least give you an idea of what to look at. I haven't used an SB setup yet so I don't know if that behavior of the vcore is normal or not, but I would suspect it is.
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post #5754 of 10072
You know I respect your opinions, PapaS.

I don't have the years you do with doing this. So I might be wrong. But it works for me. And seems to work pretty consistently on the SB architecture I have seen posted.

Its always good having lots of options.
    
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post #5755 of 10072
Here's a screenshot so you can confirm that it is normal.
2011_04_28_16_15_32_792x580.jpg
I got these results running 3DMark, and it seemed to spike when it was loading.
I dont have LLC on, and A LOT is on Auto since im a newb at this. I did however change the Vcore while in OS using the AI Suite. I got some BSOD's too from my Vcore being too low while running Small FFT's. I also ran Intel Burn Test since i thought it would show stability, but i guess it wasn't true since i BSOD in 10secs small fft's afterwards.

ASUS's AutoTuning seems to work very well though as you can see here:
vlc2011-04-2122-36-42-94-1.jpg
Edited by nawon72 - 4/28/11 at 4:33pm
post #5756 of 10072
Quote:
Originally Posted by nawon72;13311674 
Here's a screenshot so you can confirm that it is normal.

looks good, actually.

and IBT without Windows 7 SP 1 and AVX is pretty worthless for showing stability.

with SP1 and AVX it will spike the hell out of your temperatures, so use it carefully.

And once you bring the blend into Prime 95 you will really see some stability vs instability.
    
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post #5757 of 10072
Quote:
Originally Posted by Sohryu76;13311819 
IBT without Windows 7 SP 1 and AVX is pretty worthless for showing stability.

with SP1 and AVX it will spike the hell out of your temperatures, so use it carefully.
I have no idea what your talking about(im newb). What's IBT and AVX? I know you said run "Intel Burn Test with AVX for roughly 24 passes," but i dont see anything saying AVX on it.
Quote:
Originally Posted by Sohryu76;13311249 
EDIT**
I take it back... 1.46 for 4.9 is reasonable. my bad. its because for a split second your PC does something and your computer kicks up the voltage thinking your CPU is going to get a load.
If you look again you will see im at 4.8GHz. And according to a guide that ill link later if necessary(its on OCN), 4.5-4.8GHZ should be 1.375-1.450v. Also, the voltage on the validation was from running small fft(1.392v). It would change between that Vcore and 1.386 quite often. So im confused by the high voltages when not under load.

Edit: I just saw a warning saying i got 1.504v while i was watching YouTube.
Edit2: I just noticed i had my voltage 0.045 higher than before, so now my Vcore isnt as high.
Edited by nawon72 - 4/28/11 at 5:49pm
post #5758 of 10072
Quote:
Originally Posted by nawon72;13312084 
I have no idea what your talking about(im newb). What's IBT and AVX? I know you said run "Intel Burn Test with AVX for roughly 24 passes," but i dont see anything saying AVX on it.
http://www.mediafire.com/?2l2abql2b2bdunl
replace the folders in your IBT with the ones you just downloaded.
and watch your temperatures carefully... they will spike
also you need to be running Service Pack 1.
However... like PapaS said... This is not really a true way to test real world stability. But it will stress the heck out of your chip.
It can take your chip to thermal shut down limits if your cooler is not sufficient.
Be warned.
Quote:
If you look again you will see im at 4.8GHz. And according to a guide that ill link later if necessary(its on OCN), 4.5-4.8GHZ should be 1.375-1.450v. Also, the voltage on the validation was from running small fft(1.392v). It would change between that Vcore and 1.386 quite often. So im confused by the high voltages when not under load.

I can't explain this part. Possibly one of your settings is giving extra ATV.
but I am not positive.
Edited by Sohryu76 - 4/28/11 at 5:28pm
    
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post #5759 of 10072
Is this the avx referred to?
Quote:
The need for greater computing performance continues to grow across industry segments. To support rising demand and evolving usage models, we continue our history of innovation with the Intel Advanced Vector Extensions (AVX).

Intel® AVX is a new 256 bit instruction set extension to SSE and is designed for applications that are Floating Point (FP) intensive. It was released early 2011 as part of the Sandy Bridge processor family and is present in platforms ranging from notebooks to servers. Intel AVX improves performance due to wider vectors, new extensible syntax, and rich functionality. This results in better management of data and general purpose applications like image, audio/video processing, scientific simulations, financial analytics and 3D modeling and analysis.

http://software.intel.com/en-us/avx/
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post #5760 of 10072
Quote:
Originally Posted by alancsalt;13312422 
is this the avx referred to?



http://software.intel.com/en-us/avx/

10-4
    
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