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post #11 of 34
What is your motherboard that you are using?
I think on Gigabyte LLC is multi-step load-line.
post #12 of 34
Thread Starter 
Quote:
Originally Posted by neakz View Post

What is your motherboard that you are using?
I think on Gigabyte LLC is multi-step load-line.

MSI Z68A-GD65
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post #13 of 34
Quote:
Originally Posted by croSSeduP View Post

What's an example of a program that uses hyper threading?
Still I don't see anything in my BIOS about LLC... What else might it be called? There is a thing called "system agent voltage" and CPU I/O voltage; both of those things have adjustable voltage.
BTW, what is Vdroop?

I checked out your manual from the MSI support page and it is labeled "Vdroop Control." Try setting it to one notch below the maximum, or at the halfway point (50-75%).

Vdroop is when the voltage of your processor drops as the processor is loaded. To see it in action, open up CPU-Z or another program that can measure your CPU voltage. You should be at ~1.6GHz with a given voltage while idle. Now, load the processor using something like Prime95 or IBT/Linpack. Your voltage will tend to vary downwards while under load (for example, it might go from 1.4v idle into 1.36v during load). This drop/variance in voltages under processor stress is known as "Vdroop."

Vdroop Control will stabilize Vdroop so your processor receives a relatively stable supply of voltage under load. Depending on the setting you choose, the change in voltage might narrow down to .1v or less (e.g. from 1.4v idle to 1.392v load) and might allow you to lower your Vcore. A Vdroop Control setting that is too high (e.g. 100%) may allow the processor to have an upward change in the voltage it receives during load, which is generally not recommended.
Edited by friend'scatdied - 11/20/11 at 10:20am
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post #14 of 34
Thread Starter 
Quote:
Originally Posted by friend'scatdied View Post

I checked out your manual from the MSI support page and it is labeled "Vdroop Control." Try setting it to one notch below the maximum, or at the halfway point (50-75%).
Vdroop is when the voltage of your processor drops as the processor is loaded. To see it in action, open up CPU-Z or another program that can measure your CPU voltage. You should be at ~1.6GHz with a given voltage while idle. Now, load the processor using something like Prime95 or IBT/Linpack. Your voltage will tend to vary downwards while under load (for example, it might go from 1.4v idle into 1.36v during load). This drop/variance in voltages under processor stress is known as "Vdroop."
Vdroop Control will stabilize Vdroop so your processor receives a relatively stable supply of voltage under load. Depending on the setting you choose, the change in voltage might narrow down to .1v or less (e.g. from 1.4v idle to 1.392v load) and might allow you to lower your Vcore. A Vdroop Control setting that is too high (e.g. 100%) may allow the processor to have an upward change in the voltage it receives during load, which is generally not recommended.

Cool. Thanks for this. BTW, I am now able to run 4.7GHz @ 1.42V after turning off HT and enabling CPU PLL overvoltage. I'll try what you said and see if I can bump it to 4.8GHz w/o changing CPU voltage.
+1 rep! Thanks!

EDIT: Well, there is a menu item called Vdroop Control, but there are only two settings: Auto and Low Vdroop. I changed it to Low Vdroop thinking that it will keep it from dipping when the CPU is under load?
Edited by croSSeduP - 11/20/11 at 1:47pm
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post #15 of 34
Quote:
Originally Posted by croSSeduP View Post

It says in your rig profile that you have it 5.2?

I'm too lazy to update it every time I change it tongue.gif
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post #16 of 34
Quote:
Originally Posted by croSSeduP View Post

Cool. Thanks for this. BTW, I am now able to run 4.7GHz @ 1.42V after turning off HT and enabling CPU PLL overvoltage. I'll try what you said and see if I can bump it to 4.8GHz w/o changing CPU voltage.
+1 rep! Thanks!
EDIT: Well, there is a menu item called Vdroop Control, but there are only two settings: Auto and Low Vdroop. I changed it to Low Vdroop thinking that it will keep it from dipping when the CPU is under load?

You need to update your bios and you will get more levels for the Vdroop control. Do you have the B3 or G3 board. Seems there are 2 different z68gd65's. Here's a pic of when that was updated. I would get the latest bios above the one I highlighted.

Also for using 8gigs of ram 2 4gig sticks, I would set the VCCIO/Vtt to 1.100v-1.125v. It will help. NEVER change System Agent at all.

510
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post #17 of 34
Quote:
Originally Posted by croSSeduP View Post

EDIT: Well, there is a menu item called Vdroop Control, but there are only two settings: Auto and Low Vdroop. I changed it to Low Vdroop thinking that it will keep it from dipping when the CPU is under load?

Besides the post right above mine, set it to Low and compare your voltages at load and idle using CPU-Z. With a new BIOS, try 50-75%. Vdroop Control tends to improve your flexibility with the Vcore (lower Vcore at same clocks or higher clocks for same Vcore).

And as Hambone07si also thoughtfully mentioned, tweaking the VTT/VCCIO and QPI voltages to around 1.1v might also help you raise the clocks further and/or improve stability.
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post #18 of 34
Crossedup

Try checking out this thread I made here - http://www.overclock.net/t/1100100/info-intel-2500k-2600k-overclocking-tips

Thats got info on the voltages, makes it easier to read that and change them at once instead if changing individual ones recommend in this thread.
post #19 of 34
Thread Starter 
So far I have set Vdroop to low, but have not updated BIOS. In fact, I can't because those BIOS zips for some reason are not compatible w/ my vers. of W7. Going to have to call MSi about it. But I have the OC at 4.8 GHz @ 1.42V. With the Vdroop set to low, during OCCT stress test it drops from 1.42 to 1.403 or something like that. Is that good? It ran 8 hours on OCCT w/o error. I'd say that is stable? Highest core temp was 77C.
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post #20 of 34
People tend to have most luck with LLC at ultra high, so level 4 out of 5, or 8 out of 10. I aim to have my voltage drop by 2 increments at best, and rarely 3 increments. So if you set vcore to 1.415, it might drop to 1.41 or 1.405.

Im not sure about 1.42 to 1.403, seems quite a jump that, try increasing the LLC level mate! As for OCCT, again I dont have any knowledge of testing with this, I just use p95. But you could try the quick 1344 and 1792 p95 tests from the link I posted, these arent 100% stable tests but they give you a good idea.
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