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post #2491 of 10701
Thread Starter 
Quote:
Originally Posted by Rellian;14546426 
I was hoping thats what you were going to say. Thanks!

BTW - luv the new "post bios settings" idea. Thats really gonna help us rookies.

No worries, happy to help and thanks biggrin.gif

EDIT:

Damn it past my 4444post. frown.gif
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post #2492 of 10701
I have been running the high FFT tests in Prime for 15 minutes to do the initial stress tests and Prime keeps hanging when I enter the 1344 value for FFTs. Then I ran into the following which explains it.

======
The "Custom" test allows you to create your own test. The "Min FFT size (in K)" and "Max FFT size (in K)" allow you to pick the minimum and maximum size of the FFTs done in the test. The sizes you select are not the amount of memory used by the tests. The size value times 1024 is actually the number of points used in the FFT. Prime95 is not actually capable of doing FFTs of any arbitrary size. It can do only sizes in the following list: 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384, 448, 512, 640, 768, 896, 1024, 1280, 1536, 1792, 2048, 2560, 3072, 3584, and 4096
======

The same thread goes on to say Prime will lock if you enter values other than those above for custom FFT's. Thats exactly what it is doing for me. It continues to look like it runs but I can't stop workers. I had to end the process in Task Manager. 1792 runs like a charm for 15 minutes with 90% memory usage.

Am I missing something with the 1344 test value that was suggested?
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post #2493 of 10701
what version of prime? mine works fine doing 1344 FFT's as do many others
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post #2494 of 10701
Quote:
Originally Posted by Roksonixx;14547562 
what version of prime? mine works fine doing 1344 FFT's as do many others

That may be it. Using 25.11 Build 2
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post #2495 of 10701
im on 26.6 build 3, i think that's the latest,

try it (not sure if i can post external links here)
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post #2496 of 10701
Thread Starter 
Quote:
Originally Posted by Rellian;14547582 
That may be it. Using 25.11 Build 2

Check the OP for downloads to everything you need, cpu-z, realtemp and the latest Prime 95. It should be where the RULES is posted right above the standard vs Custom stability testing. biggrin.gif

Quote:
Originally Posted by munaim1;14538383 
Spreadsheet Update

I have created a new sheet for BIOS templates, it could be a reference point to other's including oneself and a quick 'copy and paste' whenever required in other threads/posts etc.

Those that have posted their stable systems ALREADY please spare a few minutes of your time to do this. One more thing, these are the ones im after:
  • Main BIOS page (The advanced settings main page)

  • Full AI tweaker Page including DRAM Timing control

  • CPU Configuration Page


Enjoy smile.gif

Edited by munaim1 - 8/11/11 at 1:17pm
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post #2497 of 10701
I have a quick question....is anyone here running above 1.42 vid 24/7?
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post #2498 of 10701
Thread Starter 
**PLL VOLTAGE INFO**

I been recently testing something for the last few days and that is PLL voltage. In the first few instance I've find that lowering actually helps stability for some cpu's, now it seems that more and more are actually trying it and results have been great.

Just 2 hours ago I recommended fuloran1 who was having having stability issue's for last few days to try the following thing:

Quote:
Originally Posted by munaim1;14537860 
they are all on deafult I pressume?

What I want you to try is, decrease the PLL voltage to around 1.7/1.71v and test for stability and record what happens, then I want you to increase the PLL voltage to around 1.89v and again see what happens. The objective is to see whether or not your chip like high PLL or low PLL voltage, then we'll take it from there.


From having continous BSODS at the 7/8minute of the 1792 FFT he tried many things without success. He tried the above method and changed PLL voltage to 1.71v.

Quote:
Originally Posted by fuloran1;14538137 
Ok, so now I didnt get a bsod, but a worker failed at 8 minutes. Raised pll to 1.89 and testing.

Progress!!!!! No bsod and worker failing can be an indication of near stability. Dropping the PLL certainly helped.


Here's another instance, Roksonixx kept failing the 1344 FTTs and then after trying the same thing:
Quote:
Originally Posted by Roksonixx 
it might just be pure luck but i've put my PLL voltage down to 1.7v and vcore down 4 notches and im 10 minutes into those bloody 1344 fft's ....

fingers crossed! if i can get this to work i'll update my "stable" score in your thread


After a few minutes:
Quote:
Originally Posted by Roksonixx 
i tried a few above 1.8 and down to 1.75, but i've just tried 1.7 and it's worked wonders...20 minutes into that damn test, with a nice low vcore now....

it's rather strange that a high voltage can throw things off, with vcore it doesnt matter if you're 0.01 or 0.1 above, it still works because it has "enough"

i'd recommend putting 124 bsod's on your thread to "too much / to little PLL voltage", because that's certainly what's happened here



Seems like PLL voltage does make a difference. He could be right in saying error 124 could correspond to PLL voltage as oposed to VTT (VCCIO) and vcore. This is a good find.!! thumb.gif


Again:
Quote:
Originally Posted by TwoCables;14547689 
As I mentioned earlier, I had a goal of finally passing Prime95 Custom @ 1344K using 7168MB (exactly 7GB) of memory for 30 minutes. Well, after a bunch of trials and errors, I finally did it! I stopped my test at 33 minutes because I just couldn't wait any longer. smile.gif

http://home.comcast.net/~twocables/33Minutes%21.png (1680 x 1050)

I'm sorry for forgetting to include my name in Notepad, but I was a little bit too excited. So, let's just go by the date and time on the Taskbar for now. wink.gif

Anyway, what allowed me to do this was dropping my CPU PLL Voltage all the way down to 1.70000V which seems to run at 1.693V - 1.696V (that is, after testing several different CPU PLL Voltages).


Yet more proof that, reducing PLL voltage is the way forward for getting the system stable, however he couldnt get it stable for the 1792FFT without a small PLL voltage bump to 1.70625v:
Quote:
Originally Posted by TwoCables;14548841 
I did it! After that 8-minute failure, I went straight to a CPU PLL of 1.68750V, but it failed after 4 minutes. So then I went straight to 1.70625V and it passed twice (30 minutes)!! Oh happy day!
wheee.gif

My advice play around with the PLL voltage from 1.7v and you should be good. Note I've dropped the PLO to 1.55 and all is well, I recommend testing it from 1.4 and slowly go up, by small increments.
Edited by munaim1 - 9/3/11 at 5:47pm
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post #2499 of 10701
but the thing is these could be lucky runs after testing 4-5 times in a row with "tweaked" settings, one of them is bound to get further than the others...... more like a placebo effect....

thus the reason i run mine for longer (or multiple times), because if it's truely stable it wont crash for hours or crash on one run then pass the next
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post #2500 of 10701
Thread Starter 
Quote:
Originally Posted by Roksonixx;14548019 
but the thing is these could be lucky runs after testing 4-5 times in a row with "tweaked" settings, one of them is bound to get further than the others...... more like a placebo effect....

thus the reason i run mine for longer (or multiple times), because if it's truely stable it wont crash for hours or crash on one run then pass the next

Noted that all rigs are different and same goes for cpu's, that's why ever one of them will react differently to voltage changes, that's the way it is and that's why I recommend doing tests to find out which one YOUR cpu likes, whether it be High PLL or Low PLL, but it seems that more and more are actually benefiting from low PLL (1.7vish) as oppsed to high (1.85+).


It's not something to pass for hours, it's a good indication of a duration that is 'acceptable' in prime blend for stability, so for exmaple, 15mins of each of those FFTS could likely pass just over 12hours prime blend, 30mins of each of those FFTS means prime could last even longer.

You have to remember that this kinda falls in to the subjective stability issue. Some say 12hours blend some say 24hour and so on. I believe passing those both in 15minutes intervals is a good indicator that it should run blend for 12hours. Simple smile.gif


EDIT:

It's a bit like stabalizing a system for 50 IBT runs as opposed to 150, one person will be tweaking for the 50 runs which is good enough for him while the other tweaks it for 150, both are stable but one is extreme overkill while the other is mediocore. YOU HAVE TO DRAW THE LINE SOMEWHERE.

smile.gif
Edited by munaim1 - 8/11/11 at 2:03pm
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