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Q9450 OC nightmare? - Page 4

post #31 of 118
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Quote:
Originally Posted by rpm666 View Post
I wouldn't put 1.5v through the processor. You should be able to hit 3.8-3.9 with 1.37 or LESS. NB and FSB look good. CPU reference voltage for my board adds 300ma to the vCore - I have mine disabled because instead of 1.3vCore it would add that and make it 1.6vCore - WAY too much.I have only gone over 1.4vCore when at 3.95 trying to force the board to 500+FSB. I haven't read too much of the other posts but make sure you have watchdog disabled as well as any other "Features" of the motherboard. Enhanced power slope should be enabled though.
So the CPU reference voltage actually adds the voltage to the CPU voltage? I've read it was actually some preset working with 'fixed' multipliers compared to a fixed value. I can't disable it though, just put it on "auto" than, right? And I suppose the same goes for the "Memory reference voltage", right?

Nobody can actually exactly explain those ... glad someone finally does!
    
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post #32 of 118
Quote:
Originally Posted by baretsu View Post
Now about theat GTL: this definitely makes sence but I don't have it in my BIOS, not under that name anyway ... could this be the CPU reference voltage in my BIOS?
According to an Anandtech review of the MSI X48 Platinum:

"were forced to manually set the "CPU Reference Voltage" when working with our quad-core CPU. It appears as though the BIOS properly sets this voltage automatically when a dual-core CPU is installed, but it needs a little help with the QX9650. We used 0.82V with an "FSB Terminator Voltage" (VTT) of 1.30V - this being 63% of VTT. As you can see, the "CPU Reference Voltage" is really a single GTL setting in disguise. Without this change we were unable to press above about 360MHz FSB; afterwards we had no problems running 400MHz FSB.

As we mentioned before, higher "NB Voltage" settings has the effect of quickly causing instability. Switching to a more robust form of MCH cooling may help to alleviate this affect."

Hope this helps,
Rob
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post #33 of 118
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strangely enough mine doesn't even boot on these settings, while OC'ing to 400 FSB works great on everything on auto ... guess it's different for the X38 maybe? BIOS options are exactly the same though ... oh well, guess I'll keep on trying than ...
    
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post #34 of 118
argh dubble post sorry ><
Edited by Elightos - 6/2/08 at 2:40pm
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post #35 of 118
have you tried to change your FSB/Memory ratio option? your RAM is rated as 1333 MHZ but when i looked at your BIOS picture it was above that. That means it is getting OCed aswell and will require some extra volt for it to run good.
It's advisable to put your FSB/Memory ratio down abit so your RAM is underclocked while you're OCing your CPU. If you don't do this you might hit a wall, not becaus of the CPU but becaus of your RAM and you'll need to check BOTH for instability problems.

Put down the ratio abit so your ram will be running at 1200 or so then start ocing your CPU again. When you reach the limit of the CPU start thinking about OCing your RAM. One thing at the time make the number of problems that would cause instability smaller!
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post #36 of 118
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Quote:
Originally Posted by rpm666 View Post
Just a heads up, this chip will do 3.8GHz with 1.325-1.350 vCore, 1.55NB, and 1.45 FSB. It seems to be anything really over 3.9GHz that it asks for so much more. 3.9 can be run at 1.362vCore, 1.475 FSB and 1.6 NB.
Sadly but true, none of all the above parameters seem to do any good to my mobo ... not evne at 400MHe (while this is rockstable with everything on auto) ...
I'm running out of ideas here since nothing seems to work except auto ... been playing around for over a week now to get the damn thing stable at 400 FSB without auto settings ... even that doesn't seem to work! Are there any great progs actually showing all voltages? PC Wizard doesn't, everest either, nor CPU-Z ... I'm especially interested in the CPU reference voltage ...
    
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post #37 of 118
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Quote:
Originally Posted by Elightos View Post
have you tried to change your FSB/Memory ratio option? your RAM is rated as 1333 MHZ but when i looked at your BIOS picture it was above that. That means it is getting OCed aswell and will require some extra volt for it to run good.
It's advisable to put your FSB/Memory ratio down abit so your RAM is underclocked while you're OCing your CPU. If you don't do this you might hit a wall, not becaus of the CPU but becaus of your RAM and you'll need to check BOTH for instability problems.

Put down the ratio abit so your ram will be running at 1200 or so then start ocing your CPU again. When you reach the limit of the CPU start thinking about OCing your RAM. One thing at the time make the number of problems that would cause instability smaller!
Played with it quite a lot and it seems it only remains stable between 1250 and 1350 ... I first thought this would be the problem, but that doesn't seem to be the case ...

Right now, I've booted with 417 MHz to get 1333 MHz and adapted some more settings (all changing them one at the time, reboot, check ...) and just until now I at least didn't get BSOD'd yet ...
    
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post #38 of 118
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Best results (once again) with everything on auto but not so stable just yet (freezes on 3DMark) but better than 410 MHz though ... Should I try to give some more voltage on the memory (still on 1.5v) allthough it gives me a neat 1334 MHz?
    
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post #39 of 118
Take a picture of your RAM settings of your BIOS. I'm thinking everything is LINKED and as you raise your FSB you are raising your RAM out of it specifications and my experience with my Corsair XMS3 ram is that it hates to be overclocked. Set your ram to a 400/1066mhz timings of 9-9-9-24@1.82 volts.

If your board has an option to unlink your ram that would be the best since it wont change with your FSB.

Hell, take pictures of a lot of the screens in your BIOS -- Lets see what you have for Processor, RAM, BUS speeds, everything, every window, every subpage.

Or else...

Hydrogen X38

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post #40 of 118
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Quote:
Originally Posted by rpm666 View Post
Take a picture of your RAM settings of your BIOS. I'm thinking everything is LINKED and as you raise your FSB you are raising your RAM out of it specifications and my experience with my Corsair XMS3 ram is that it hates to be overclocked. Set your ram to a 400/1066mhz timings of 9-9-9-24@1.82 volts.

If your board has an option to unlink your ram that would be the best since it wont change with your FSB.

Hell, take pictures of a lot of the screens in your BIOS -- Lets see what you have for Processor, RAM, BUS speeds, everything, every window, every subpage.

Or else...

Hydrogen X38

getting a bit agressive there, are we

So ... the stable settings are rather straight forward:







And that's about it ... all manual settings always seem to fail ... no matter what! It does run a bit stable at 417 though (but immediatly crashes above this or below 415)
I don't dare to go into the 'red' values though ... maybe I should in order to get this f***ing board stable?
    
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