Quote Originally Posted by Tulū View Post
Okey,
i lowered my rams to 851MHz FSB : DRAM 1:1 now.
I ran prime , i got error again on core0 just 5 mins. after this time.
I just want to know that , i 've ran small FFT's 3 hours and 5 rounds of Intel burn test it was stable ; i wonder that if passes smallFFTs and IBT ,couldn't i say cpu speed stable ?

I've ran as 851MHz @ 5-5-5-18 trfc 55 @ 2.1 V

Edit: Now lowered FSB to 413MHz ( 413 x 8 ) and set rams to 826MHz @ 5-5-5-18 trfc 55 @2.1 V

Btw kiikkuja, you've said "Max values for PLL and fsb termination voltage are 1.60 and 1.38." but my FSB Term is 1.48 now and PLL is 1.58 .
This FSB Term. can cause a problem ?
As I stated I'm not at all sure about the voltages anymore, because you have a different processor than mine and this is my first Intel platform I've ever overclocked. With Q9450 the values I stated are those but they may not be the ones that apply to your case.

I AM NOT AT ALL SURE ABOUT THE VOLTAGE ISSUE SO DON'T TAKE MY WORD ON IT.
Just to be sure you could lower your fsb termination voltage to under 1.40, ~1.38 maybe and if everybody agrees you can raise it when your sure it's safe. That way you don't break anything and enjoy the comp little bit longer.

On the core 0 issue you could try raising your vcore or gtl reference voltage for that core a notch or two.

The stability in my opinion is a matter of own preference. In my case I ran Prime 95 Large FFT for 21 hours, small FFT for ~10 hours and blend for ~9 hours just to be sure that when I compile programs in Gentoo there's no error
resulting from my overclock. If you consider you have not some critical application that needs absolute staibility then why worry so much? If you do
you should use all 3 programs (IntelBurntest, Prime95, OCCT) IMHO to be sure
the rig is completely stable at all times. And not some 1 hour this and 2 hours of that but rather 8 hours or overnight etc...

Although I ran Prime95 for a very long time it seems that my comp isn't absolutely 3d stable after all. When gaming under wine in Gentoo cod2 stops at some point with sound on but nothing happens on my screen.
I had lower my clocks and vcore to be able to play properly the game.
I'm quite sure that my radiator is too small and cannot cool this quadcore monster and a overclocked 8800GT at the same time.