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Offset Voltage and Vdroop Help

post #1 of 17
Thread Starter 
I'm trying to OC my 2500K per this guide: http://www.overclock.net/t/1100100/info-intel-2500k-2600k-overclocking-tips#.

I'm a beginner when it comes to this and I need some help with a couple of things.

My OC is at 4.4 with vcore at 1.290 - max temps at 100% load are 66/74/73/71

All of this is under stress test with manual voltage settings. I've read that I need to switch back to "offset" so it will run slower at idle (this is is my understanding).

My question is, when switching to offset, what do I change my values to and do I use a (+) or (-)?

My VID is 1.3861 when under 100% load.

Also, how does vdroop come into effect in all of this?

Sorry if this stuff is really basic.

Also, one last question - would it hurt to just leave the voltage settings at manual?

Thanks
post #2 of 17
Quote:
Originally Posted by brett2634 View Post

I'm trying to OC my 2500K per this guide: http://www.overclock.net/t/1100100/info-intel-2500k-2600k-overclocking-tips#.
I'm a beginner when it comes to this and I need some help with a couple of things.
My OC is at 4.4 with vcore at 1.290 - max temps at 100% load are 66/74/73/71
All of this is under stress test with manual voltage settings. I've read that I need to switch back to "offset" so it will run slower at idle (this is is my understanding).
My question is, when switching to offset, what do I change my values to and do I use a (+) or (-)?
My VID is 1.3861 when under 100% load.
Also, how does vdroop come into effect in all of this?
Sorry if this stuff is really basic.
Also, one last question - would it hurt to just leave the voltage settings at manual?
Thanks
You could leave manual and enable speed step and C1E to allow the proc to drop to 1600 mhz on idle.
or do that with offset, since your stable at 1.38, just put a + offset and bump it up, until CPU-Z says 1.38 on load. try with a +0.050 first and test for stability im guessing you dont need 1.38 for 4.4Ghz
 
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post #3 of 17
Thread Starter 
I'm confused about vcore and vid. Should I drop the vcore from 1.290 since the vid is showing 1.38? I started out with vcore at 1.31 then 1.30, but didn't think I could go lower than 1.29.

The guide that I used had speed step enabled and it is now ildling at 1600. So, I guess I will just leave manual if this will not kill my CPU.
post #4 of 17
Quote:
Originally Posted by brett2634 View Post

I'm confused about vcore and vid. Should I drop the vcore from 1.290 since the vid is showing 1.38? I started out with vcore at 1.31 then 1.30, but didn't think I could go lower than 1.29.
The guide that I used had speed step enabled and it is now ildling at 1600. So, I guess I will just leave manual if this will not kill my CPU.

If you find a manual overclock that is stable, it is easy to switch to offset voltages as long as you know what Vcore you need for stability and what your processors VID is at the clock speed you are trying to achieve.

VID really isn't something to worry about if you're just doing a manual overclock. It is just a reference voltage programmed into the cpu that the cpu uses to determine its voltage when set to auto. However, when doing an offset overclock, the VID is the value you offset from, so VID + offset = Vcore.
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post #5 of 17
Thread Starter 
So, when I manually OC, should my Internal PLL Overvoltage be disabled? The MB says to enable it for OC, but my guide said to disable it. I was confused, so I left it at auto. Is this why the VID is showing much higher than the vcore that I manually set?
post #6 of 17
Quote:
Originally Posted by brett2634 View Post

So, when I manually OC, should my Internal PLL Overvoltage be disabled? The MB says to enable it for OC, but my guide said to disable it. I was confused, so I left it at auto. Is this why the VID is showing much higher than the vcore that I manually set?

I don't think the VID is affected by the PLL overvoltage. The VID is set by the manufacturer for a given speed, so it should remain constant.
post #7 of 17
Quote:
Originally Posted by Nihilo View Post

I don't think the VID is affected by the PLL overvoltage. The VID is set by the manufacturer for a given speed, so it should remain constant.

This is correct. VID should never change at a given clock speed.

I have read that PLL overvoltage helps when going for extreme overclocks, but it is not really necessary for the mid 4ghz range.
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post #8 of 17
I honestly left mine on auto. Not sure if I disable it, if it will help my VCore get lower or not
post #9 of 17
Quote:
Originally Posted by Nihilo View Post

I honestly left mine on auto. Not sure if I disable it, if it will help my VCore get lower or not

Mine is disabled... I have to say I think it might be hurting my system stability. So Auto might be the best choice.
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post #10 of 17
I'm going to leave my on just because I've lowered my PLL to 1.55v, so it might need the overvolts at times.
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