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post #3751 of 10701
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Quote:
Originally Posted by kdon View Post
not ram overclocking just had vccio really low with my 8gb ram, was having issues running 90% ram usage p95 lmao
even with 8GB RAM and the voltage being at 1.5v, I don't think you'll have to increase the vccio.

To my understanding VCCIO (VTT) should only be increased when you're overclocking the RAM or you have all four dimm slots populated to allow less strain on the IMC and increase stability.

If you are not increasing the DRAM voltage then 1.1v should be more than fine, or max 1.125v.


Offtopic, very nice to see the thread quite active
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post #3752 of 10701
Quote:
Originally Posted by munaim1 View Post
even with 8GB RAM and the voltage being at 1.5v, I don't think you'll have to increase the vccio.

To my understanding VCCIO (VTT) should only be increased when you're overclocking the RAM or you have all four dimm slots populated to allow less strain on the IMC and increase stability.

If you are not increasing the DRAM voltage then 1.1v should be more than fine, or max 1.125v.
well at 1.125v vccio, i was experiencing huge problems with high-ram usage p95, and my board's auto set it higher so i bumped it up leaving that be for now, gonna try and fix my offset Vcovre voltage before i put 1.6V through it and blow it up... thank god for water cooling though or my chip would be dead by now... haha
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post #3753 of 10701
actually i just adjusted my offset to 0.080 under ultra high and am getting a steady 1.464-1.472vcore, liking this now
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post #3754 of 10701
Ok guys, some strange thing happend here, or maybe not im not sure?

Well i went into BIOS and changed Vccio to auto which set it to quite low 1.050? knowing that i got 8GB ram and i run it @ 2133 mhz...ok then i tried to test my stability 1344 fft(short test) and it passed lol?

I mean isnt this super low volttage? 1.050...

Now the most strange part....when i went back into bios and put manual vccio to 1.125 it gave me freez into windows, and then BSOD, 109.....then booted back into Win and the same thing happend after few mins, went back into BIOS and i set my memory voltage to 1.60, booted, the same thing happend? so i went again in BIOS and now i tried 1.150/ vccio/160 dram booted, bam anoter BSOD, 109...

again changed Dram to 1.60 same results....then i got pissed and changed vccio to auto, and ram to 1.55 went back to win, and no more BSOD, and i passed 1344/1972 like np both 30 mins : / someone got some logical explanation about this?

So i gueess this chips doesent need as much memory controller voltage like 920s etc...
Edited by psyside - 9/10/11 at 6:31pm
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post #3755 of 10701
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Quote:
Originally Posted by psyside View Post
Ok guys, some strange thing happend here, or maybe not im not sure?

Well i went into BIOS and changed Vccio to auto which set it to quite low 1.050? knowing that i got 8GB ram and i run it @ 2133 mhz...ok then i tried to test my stability 1344 fft(short test) and it passed lol?

I mean isnt this super lowe volttage? 1.050...

Now the most strange part....when i went back into bios and put manual vccio to 1.125 it gave me freez into windows, and then BSOD, 109.....then booted back into Win and the same thing happend after few mins, went back into BIOS and i set my memory voltage to 1.60, booted, the same thing happend? so i went again in BIOS and now i tried 1.150 vccio, booted, bam anoter BSOD, then i tried 1.55 Dram, and same BSOD again lol!

again changed Dram to 1.60 same results....then i got pissed and changed vccio to auto, and Dram to 1.55 went back to win, and no more BSOD, and i passed 1344/1972 like np both 30 mins : / someone got some logical explanation about this?
simple answer, too much voltage = not so good and unstability arises.

just to let you know again, the 1344 / 1792 aren't very reliable. if your dram voltage is 1.5v then there is no reason to increase the vccio, well maybe just a little 'can' help stability. General rule is keep vccio within 0.5 or the dram votlage, but that rule applied to older cpu's and not entirely sure if works the same way.

Unless you are overclocking the RAM then you shouldn't really mess with the VCCIO.
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post #3756 of 10701
Yea bro i know, but i cant test 12+ hours for every setting, its to much time and im busy!

As for the vccio, i know that more is not always better, but i tought 1.050 is to low for 8GB/2133 mhz, but guess i was wrong, does it have anything to do with the chip itself or? because my friend run 1.17+ on vccio in order to get stability..
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post #3757 of 10701
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Quote:
Originally Posted by psyside View Post
Yea bro i know, but i cant test 12+ hours for every setting, its to much time and im busy!

As for the vccio, i know that more is not always better, but i tought 1.050 is to low for 8GB/2133 mhz, but guess i was wrong, does it have anything to do with the chip itself or? because my friend run 1.17+ on vccio in order to get stability..
lol patience is the key

you rated timings and frequency require a certain voltage (1.5v) therefore you shouldn't need to increase the VCCIO unless you are runnign at higher dram volts.

Unless your friend is increasing the dram volts i would think that he doesn't need that much VCCIO and yes different chips react differently to voltage changes, so in that case he must definitely need it.

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post #3758 of 10701
New stable oc, 4.7Ghz at 1.41v. Volts seem high to me, but it wont boot with any less...
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post #3759 of 10701
If I drop (raise?) my RAM timings to 9-9-9-24-2t (from stock, 8-8-8-24-2t 1600mhz) or anything else, am I likely to be able to lower my vcore without any noticeable performance loss from the RAM? (Game usage)
    
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post #3760 of 10701
Quote:
Originally Posted by psyside View Post
Yea bro i know, but i cant test 12+ hours for every setting, its to much time and im busy!

As for the vccio, i know that more is not always better, but i tought 1.050 is to low for 8GB/2133 mhz, but guess i was wrong, does it have anything to do with the chip itself or? because my friend run 1.17+ on vccio in order to get stability..
Really no way to get around it. It would be nice if those ffts reliably predicted stability, or at least 12 hour blend stability, but that isn't the case for some people. Sometimes you wont be able to pass 1344/1792 but you can get through a blend test... so you'll just end up wasting time trying to pass them. Something is weird with them because I cannot reliably pass 1792 on its own but I recently ran a 18 hour blend test which went thru 1792 multiple times.

I understand you want a quicker solution. I spent considerable time testing both for stability so I know how much patience and commitment it takes. But like most things it takes effort to get the best results.

For the vccio I found that just a notch or two above stock was best, I run 2 sticks of ram, 8gb @1.5v. There are a lot of people that told me to raise it to 1.15 but I have serious problems when I start getting up to 1.12. Just use what your CPU/RAM/IMC respond best to, start from stock and increase notch by notch up from that. 1.17 is really high anyway and I don't think thats a great idea.
Edited by donkrx - 9/10/11 at 8:53pm
    
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