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2500k overclocking 0.08v vdroop

post #1 of 7
Thread Starter 
Ello,

I overclocked my i5 2500k to 4,4ghz yesterday, the only problem is that i got the recommendation to turn off LLC, so i did. Results in a shift from 1.4v (idle) to 1.32v (load).

This is a lot in my mind. Isnt it better to use LLC level 6 (gigabyte z68x-ud3h-b3 mobo) to get a 100% even voltage and then lock it to 1.32v?

Whats the pro's of using no LLC, feels like 1.4v idle is a lot.



Also swapped the standard define-r3 chassifan for a noctua 120mm fan i was using as intake for the graphicscard and used the R3-fan as intake for the graphics instead, this lowered my cpu-temps by 5c :S, didnt know that was possible. So my 70c max temp goal just got 5c further away so im thinking of aiming for 4,7ghz.



So I came to the pro's with questions smile.gif Anyone got any tips?
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post #2 of 7
Who told you to turn LLC off? Turn it back on tongue.gif
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post #3 of 7
Thread Starter 
If Vdroop is something evil that only exists to bring our voltages up during idle, why not automatically set it to level 6 or higher in order to lower our idle voltage? Why even have the option to disable it and have it rediculously low at default?




If this is true, should i just go for 1.32v in bios, use level 7 to get 1.31-1.32 idle, 1.32 load? :S
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post #4 of 7
Quote:
Originally Posted by charliew View Post

If Vdroop is something evil that only exists to bring our voltages up during idle, why not automatically set it to level 6 or higher in order to lower our idle voltage? Why even have the option to disable it and have it rediculously low at default?

If you want to know why vdroop exists, please read this page and the following page on Anandtech http://www.anandtech.com/show/2404/5.

In short, Vdroop (together with Voffset) protects your CPU from voltage spikes that occur when the load on the CPU changes. However, I have not seen people having problems due to enabling LLC and I think that as long as you don't go crazy with the voltage, the spikes will not be so high that it will damage you chip. I personally always enable LLC because it gives me more control over the voltage. Also, my CPU is at 100% load 24/7, so it should not experience much of these voltage spikes.
Edited by Conquistador SW - 9/17/12 at 2:48am
post #5 of 7
Thread Starter 
Oh i just read that, actually googling a bit atm, funny coincidence.

Well the way i see it, if you have no need for changes in voltage, the overshots should be negligable because going from 1,32v to 1,33v should be less of an overshot-waiting-to-happen.

So the question is, running 1,4v with a 0,08v vdroop vs running 1,33v with a 0,01v vdroop. Most people record their oc's at about 1,3-1,32v for 4,4-4,5ghz. I have a hard time believing that this is with LLC turned off, since they would drop to under 1,25v at load then.


Should my goal be to have as low voltages as possible under load or just at all? And should I then feel fine about going to 1,45v idle / 1,35v load?



Thx for all the input so far btw, really quick responses smile.gif
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post #6 of 7
I would go and enable LLC to get lower idle voltages. Most (if not all) people with decent overclocks enable it as far as I know.

I agree in that the spikes are probably not high enough so that you should worry. Only when you are already very close to the max voltage that is safe would I worry about the spikes (that was why I said that as long as you don't go crazy with the voltage you should be fine)
post #7 of 7
Thread Starter 
Home for lunch now, 1,34 idle 1,31load with 4,4ghz. LLC level 5. Primes been running for 5-10mins still no problems.

Still not 100% sure I perfectly understand the mechanics behind it but its cooler allright : /
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