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Ackward outcomes

post #1 of 8
Thread Starter 
Hello,

I am having quite a bit of trouble getting my Vcore up for some unknown reason. I am currently running a fine 3.3Ghz (9*366.67) overclock, but I'd like to see that go up some more. And I've tryed two possible ways to change the Vcore, at first I tried the BIOS ofcourse. Just going in the bios, chipset etc. then changing the Vcore voltage to a normal level for a Q6600 (1.4v).

Then I save and boot up those settings and when I then open all the programs that I have that will show me the voltages on atleast the Vcore it shows me this: http://img241.imageshack.us/img241/7977/70991463sp4.jpg. Now to me, that makes even less sence seeing they all give other voltages. And it makes even less sence to me seeing that my second option being CrystalCPUID won't let me change the voltage inside the OS to my desired voltage. It tells me the maximum is 1.325, and to me that is basically... way too low to believe for a 3.3Ghz stable overclock.

Seeing I'm not always smart enough to remember the little stuff (or the big stuff), I thought I'd ask some help from you guys and girls on what I am missing in the BIOS here. It will let me change the Voltages for the rest though. So I am guessing that somewhere in the BIOS there is a setting that is limiting my Vcore voltage that I somehow triggered by roaming around in the BIOS itself. And I am too dumb to then remember/find out what it is.

Thank you for reading, please leave a message if you have an idea (or if you don't please tell me as well, gives me any hope to regain selftrust )


Gr.
Timo
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post #2 of 8
What you are seeing is called vdroop, you are setting your vcore in bios to 1.4 but in windows you are seeing 1.37v. This is caused by your motherboard and is very common. I have seen drops much worse than yours. Once you put your CPU's under load it will likely drop even more. This is a common phenomenon with electricity, bascially voltage drops over a conductors length as it gets further from its source. If you are looking for 1.4v in windows, you will have to set it to 1.42 in bios.

I see you are using the same board I am and this is lucky for you, there is a very effective and simple pencil mod for these motherboards. See the first post in this overclocking guide for details on the pencil mod:
http://www.overclock.net/intel-mothe...ce-boards.html

I did the pencil mod and it works great. My vcore never fluctuates under load and only drops a few tenths of a volt from bios settings.
Edited by mtbiker033 - 7/9/08 at 5:30am
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post #3 of 8
Thread Starter 
Aye, thank you. That worked for me... Next time I'll use my brain some more and see if I don't blow up. Thanks for the help, though I won't be pencilmodding I will be upping the voltages. Under 100% Prime95 Blend load it now does 1.368 or 1.360 and with 0% load it does 1.384. Feeling the stability already

(I always ask stupid question that I am going to say "Argh, I knew that" after I get the answer)
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post #4 of 8
your very welcome and good luck!!
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post #5 of 8
the 1.325v you see is your VID voltage the other one would be your voltage your running after the vdroop, but you already gathered that . Lets see how high you can clock your quad now
post #6 of 8
Thread Starter 
Still had troubles, upped it to 1.55 to then get a droop somewhere around 1.5 but it still had problems with running Prime95 for even longer then a minute on 375*9. Though I am going to take a try it again. Sometimes this thing gives me a problem for no reason. I'll try now
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post #7 of 8
Thread Starter 
Ok, this is mental... I can get to 367.5*9 easily. But then if I put 370*9 and jack the voltage up to 1.575 it doesn't even let me stay in the OS for longer then like 30 seconds. That's mental, I can't even start to do a Prime95 or even start CPUID to check it. I say, just screw it; I have now put it on Auto and set it on 333*9. Vcore reads me 1.416 which should be round 1.44 in the BIOS.

Any nice solutions, I'd be happy to try them. Even pencil mods but I'd have to know exactly what to do and where to do it, normally I'd be good at electrical schemes but I can't seem to see it with a good look inside. I'm guessing that it's somewhere hidden under something that dissipates heat (goaling somewhere around the CPU).
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post #8 of 8
Thread Starter 
Ok... Tried it once more. I first tried the maximum FSB. Which is somewhere between 400 and 410. Then I had set it on 400*9 just for the hell of it and turned the voltage up to 1.58xx, it actually managed to get in the OS. I could open up my browser and stuff. Just the regular stuff worked.

Then I opened Prime95, ran a blend test for 5 minutes. Seemed to work. Then I ran a small FFT test... It ran shut and gave me a nice 0x00000124 (84b9b028, 0xb2000040, 0x00000800). So I upped the voltage to 1.6 in the Bios... Which normally would not be something I'd do but since the Voltage Droop is huge on this thing I didn't see much harm in it for once.

Too bad, setting 1.6v in the BIOS gives me 1.560 in the OS. Which to me wouldn't seem enough for a 3.6Ghz clock on any Q6600 G0. So now I just thaught, "Well... Why not try 100mhz less to get 3.5Ghz". So I just lowered the FSB to 389 and set the multiplier at 9. And guess what happened, POSTed just as fine as on 3.6Ghz and I am now able to run 3.5Ghz with Small FFT's in Prime95 quite good. Though I can feel that it won't stay on for long running those Small FFT's as I noticed minor slowdowns when trying to do something with Prime95 still on. In the past that has never been much of a problem.

So now... Who is willing to explain me the Pencil mod in the smallest detail so I'll try it out sometime to get myself 3.6Ghz ^^


(btw, I'll run a 5 hour Prime95 test somewhere around the coming days)
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