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Keeping VCORE the same/close when idle or under load?

post #1 of 12
Thread Starter 
Finally got around to properly overclocking and finetuning my chip, and I just have a couple of questions.

OC'ed my i7-2700k to 4.8 (5.0 required more then 1.5v, didn't play with other voltages like QPI or anything so not sure if I'd be able to run it.)

Just wondering if there is any way to keep my vcore the same or at least close to the voltage it is under load. On first boot into windows my vcore is at 1.5v (1.45v LLC 6 in BIOS) but under load my vcore drops to 1.5/1.6. Going with any LLC under 6 causes my OC to be unstable. Does anyone know a way to keep my idle voltage down while still keeping my load voltage at 1.5v? I'm using a Gigabyte Z68XP-UD4.

Bios settings are all power saving options are disabled (tried turning on C1E to see if it would help with idle voltages, no change.)
Turboboost disabled
VCORE 1.45v
LLC level 6
everything else is auto

Also was wondering if raising my QPI to 1.8v has any negative effects on my chip/anything else (just want to know so maybe I can do some more fine tuning to get my chip to run above 4.8)
Edited by Relance - 4/17/12 at 8:42pm
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post #2 of 12
I'm pretty sure the only way to have your voltage lower on idle is to use the offset voltage and enable the power saving features.

If you manually set a fixed voltage it will stay at that and not lower itself with the power saving features enabled.
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post #3 of 12
Thread Starter 
I'm sorry, but would you happen to know how to use offset voltage on a gigabyte board or where/what offset voltage is called on a gigabyte board? all i see in the voltage control is llc, vcore, qpi, pch core, and cpu pll.
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post #4 of 12
Set the vcore to normal then you should be able to use the dynamic vcore setting to set the offset voltage.
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post #5 of 12
Thread Starter 
So from what I understand, turns vcore to normal, set dynamic vcore to 1.45v, set all power savings on?
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post #6 of 12
Quote:
Originally Posted by Relance View Post

So from what I understand, turns vcore to normal, set dynamic vcore to 1.45v, set all power savings on?

The dynamic vcore should be + or - voltage from the VID that is shown. So if the VID shows 1.35v and you put +.03v for the dynamic vcore, then you vcore will be 1.38. Every time you change your multiplier your VID will change.

So if you are at 4.8 and your VID shows 1.43v then you would want to set the dynamic vcore to +.02v to get 1.45v. The VID should be shown right by the dynamic vcore setting in the bios.

Then you should be able to enable the power saving settings and when you are idle it *should* down-clock your cpu and lower the voltage.
Edited by icehotshot - 4/18/12 at 9:33pm
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post #7 of 12
Thread Starter 
I got it working, thanks!
Just a question, my VID is 1.38 at a 48x multiplier. If I set the offset to +0.07, it doesn't get up to 1.45v in cpuz/hardware monitor. If I set it to +0.185v then it gets up to 1.45v in cpuz/hw monitor. Is this normal?
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post #8 of 12
Quote:
Originally Posted by Relance View Post

I got it working, thanks!
Just a question, my VID is 1.38 at a 48x multiplier. If I set the offset to +0.07, it doesn't get up to 1.45v in cpuz/hardware monitor. If I set it to +0.185v then it gets up to 1.45v in cpuz/hw monitor. Is this normal?

Doesn't sound too out of the ordinary. As long as cpuz shows 1.45v and you are getting the same temperatures as you had before you should be fine.

My bios shows 1.355v VID and I have it at +.03v and it shows 1.38v in cpuz when idle so it is not exact.
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post #9 of 12
Thread Starter 
I tried dropping down my PLL down to 1.5v (was set on auto before) and I think my temps went up? (could have been from running prime95 here and there constantly and caused the chip to be already "warmed up")

Should decreasing PLL cause my temps to go up?
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post #10 of 12
Quote:
Originally Posted by Relance View Post

I tried dropping down my PLL down to 1.5v (was set on auto before) and I think my temps went up? (could have been from running prime95 here and there constantly and caused the chip to be already "warmed up")
Should decreasing PLL cause my temps to go up?

I wouldn't think decreasing any voltage would cause temps to rise.....
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