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post #2541 of 10699
Quote:
Originally Posted by Manischewitz View Post
Could you compare the first 10 hours and 43 min to the last hour =)
I'm not the one that enters it in the spreadsheet. That's munaim1.
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post #2542 of 10699
man I hope he lets me
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post #2543 of 10699
Quote:
Originally Posted by Manischewitz View Post
man I hope he lets me
Just leave it on overnight. One more day isn't going to kill you and you'll be extra sure it's stable.
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post #2544 of 10699
I think the PLL change may have helped me as well. I set it to 1.7 and started running tests. 47 Multiplier at 1.400 VCore. My settings and results so far are below. Passed 1792 (90% RAM) for 17 minutes, passed 1344 (90% RAM) for 27 minutes, and now 3:56 on blend. Thats 3hrs 56min btw.

BTW - Core temps stated on the spreadsheet may be a bit hot but its been between 75F and 80F inside all afternoon here.




These results might be coincedence but I've been toying around at this for a few days and this is the longest run yet. Hope to post 12 hours at around 2:30am my time.
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post #2545 of 10699
Thread Starter 
Quote:
Originally Posted by nezzarix View Post
Thanks for trying to help. FFT 1344 and 1792 will be the death of me

LOL, lowering has helped quite a few, IIRC twocables failed 1344 and 1792 with auto PLL, reduced it to 1.7v and passed 1344 but still failed at 1792, increased the pll up a notch to 1.706250v and it passed both!!

Make changes to the PLL voltage in the small increments you can. That one bump can make the difference between stable and not stable.


Quote:
Originally Posted by Roksonixx View Post
i don't know if it's a coincidence, or just luck, but with a lower pll i tend to get failing workers rather than bsod's, this isnt helping me lower my vcore though because the workers just fail and i still have to up my vcore :/
if you need more vcore then you need more vcore, unles you made some changes to your stable settings, then I really don't know.



Quote:
Originally Posted by fuloran1 View Post
Ok munaim, over 10 stable on both fft's. Gonna give it the BC2 test and then run a blend overnight. Voltage varies from 1.328 to 1.344 under load. Sits mostly at 1.366.
Awesome!!! Nice to hear that's coming along nicely, now try and reduce the vcore by one and continue doing so until you bsod. make sure you try this:


Quote:
Originally Posted by munaim1 View Post
okay from your stable submission, you need around 1.312v for it to be stable.

these are all the things I would change from the pics above:

VCCIO - 1.1250v (or as near as possible)
PLL Voltage - 1.7v (or as close to that as possible)
LLC - Level 2 (that should help compensate the vdroop)
Core current Limit - 200


Changing the LLC to level 2 will more than likely require you to lower the vcore from what you have at the moment. As I said before make sure the vcore is 1.312v under load, so change the BIOS vcore according to that.

One other thing I've noticed, run the command rate of your RAM to 2N (For now) then you can change it in a bit.

do that first and report back with a 1344 first (15mins each, 1min each cycle) then we can go onto the next one. Lets do this step by step so that we don't get confused.



Quote:
Originally Posted by Manischewitz View Post
OMG F ME IN THE @*$&(*@& I just minimized my real temp and I think the timer got reset. I had i overclocked for 11 hours and 15 min is there anyway for me to pull up the time again?
unles you closed realtemp it shouldn't reset the timer, sorry mate but it has to show atleast 12hours on the timer.


When messing around with PLL, make small increments if you can, not 1.7 to 1.72v, but as small as you can. One bump can be the difference between stable and not stable.


READ THIS:

**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 View Post
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 View Post
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.!!


Again:

Quote:
Originally Posted by TwoCables View Post
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.

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.

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 View Post
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!
My advice play around with the PLL voltage from 1.7v and you should be good.




Edited by munaim1 - 8/11/11 at 6:50pm
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post #2546 of 10699
Quote:
Originally Posted by munaim1 View Post
LOL, lowering has helped quite a few, IIRC twocables failed 1344 and 1792 with auto PLL, reduced it to 1.7v and passed 1344 but still failed at 1792, increased the pll up a notch to 1.706250v and it passed both!!

Make changes to the PLL voltage in the small increments you can. That one bump can make the difference between stable and not stable.
I've already tried every notch of PLL I can. I'm trying everything I can to stay at 1.328v. I'm very close but I'm starting to think this processor just wasn't made to handle 4.7Ghz at 1.328v
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post #2547 of 10699
Thread Starter 
Quote:
Originally Posted by nezzarix View Post
I've already tried every notch of PLL I can. I'm trying everything I can to stay at 1.328v. I'm very close but I'm starting to think this processor just wasn't made to handle 4.7Ghz at 1.328v
what are your other settings?

VCCIO?
Spread spectrum?
C1E, Speedstep, C3 and C6?
LLC?
Duty and Phase Control?
VRM frequency?
CPU Current capability?

By the way try command rate 2N instead of 1N and try again. report back

IIRC these are the only ones you should be changing, and obviously vcore and dram settings.
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post #2548 of 10699
Quote:
Originally Posted by munaim1 View Post
what are your other settings?

VCCIO?
Spread spectrum?
C1E, Speedstep, C3 and C6?
LLC?
Duty and Phase Control?
VRM frequency?
CPU Current capability?

By the way try command rate 2N instead of 1N and try again. report back

IIRC these are the only ones you should be changing, and obviously vcore and dram settings.
Command rate 2N? Not sure what that is. Rebooting to change some settings, I'll grab the exact details
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post #2549 of 10699
Quote:
Originally Posted by nezzarix View Post
Command rate 2N? Not sure what that is.
ram timings
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post #2550 of 10699
I did reduce vcore by 1 notch and it wouldnt even boot to windows. Seems ok now though after bumping it back up. Gonna do a blend overnight, see my prev post for more info.
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