What should my LLC be set to for overclocking? - Overclock.net - An Overclocking Community

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What should my LLC be set to for overclocking?

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post #1 of 14 (permalink) Old 08-07-2012, 02:26 PM - Thread Starter
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I have an i7 3770k and asus z77 sabertooth motherboard.

I've got 4.5ghz stable at 1.208v but I'm trying to get 4.8ghz stable with offset oc (1.344-1.352v) and I'm wondering what the LLC setting does exactly.

I have my LLC set to very high (75% I think). What the heck does that mean? What is the difference between auto, 25%, 100% llc?

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post #2 of 14 (permalink) Old 08-07-2012, 02:30 PM
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LLC raises vcore to lessen the effect of vdroop, or when you set a certain voltage in bios then it is actually less in windows than what you set in bios.

those different levels of LLC give more boost to the core voltage. in my experience with using off-set voltage, I use level 2, which would be like 75-80% on your asus board (asrock uses different terminology).

good luck and I would suggest looking for an owner's thread for your motherboard in the intel motherboards section and see what settings other members have used successfully.

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post #3 of 14 (permalink) Old 08-07-2012, 02:32 PM
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LLC reduces vdroop (lowers voltage slightly) upon CPU load, this can have an impact at gaining stability at higher overclocks. Generally the medium setting is enough for most overclocking.

A higher setting of LLC also allows you to use a lower vcore than you would with a LLC of say Normal/Medium.

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post #4 of 14 (permalink) Old 08-07-2012, 02:33 PM - Thread Starter
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O.

With my old 4.5ghz i had set core voltage to 1.2v in bios but in cpu z it would say 1.208.

is 75% good enough for 4.8ghz oc? i'm rly bad at this lol

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post #5 of 14 (permalink) Old 08-07-2012, 02:39 PM
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Quote:
Originally Posted by Tori View Post

O.
With my old 4.5ghz i had set core voltage to 1.2v in bios but in cpu z it would say 1.208.
is 75% good enough for 4.8ghz oc? i'm rly bad at this lol

I would say yes. You shouldn't need higher than that...

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post #6 of 14 (permalink) Old 08-07-2012, 02:42 PM - Thread Starter
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can u also explain vdroop while ur at it?

also, how come the core voltage keeps switching between 1.344 and 1.352 in cpu-z? does that have anything to do with vdroop or llc?

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post #7 of 14 (permalink) Old 08-07-2012, 02:44 PM
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Ultra high..unless going for max..then extreme.
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post #8 of 14 (permalink) Old 08-07-2012, 02:48 PM
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Quote:
Originally Posted by Tori View Post

can u also explain vdroop while ur at it?
also, how come the core voltage keeps switching between 1.344 and 1.352 in cpu-z? does that have anything to do with vdroop or llc?

Yup that's exactly what vdroop is. Put your CPU under load with Prime and see the droop.

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post #9 of 14 (permalink) Old 08-07-2012, 02:53 PM - Thread Starter
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how do i fix vdropp??

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post #10 of 14 (permalink) Old 08-07-2012, 03:08 PM
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With llc. Don't worry about the voltage bouncing. I believe that's from offset but it's normal.

You want to add enough llc so that under load the voltage stays as close as possible to what you set it at.

This is much easier to see with manual voltage. How do you know that clock is stable at that voltage?

If you haven't already get the voltage and llc figured out in manual mode. It's easier especially when you are new.

Then just switch to offset and you know what voltage to shoot for.

If you already did that then your current setting is probably fine.

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