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What to do about LLC? - Page 2

post #11 of 21
It would be interesting to see some real data about this.

The reality is that nobody here can say which way damages a processor more, because there is no data on processor damage and it's not a quantifyable property. Either a processor works or it does not, and though OC capability may possibly degrade over time there are too many variables that could contribute to that in addition to LLC.

The truth is, nobody here can do anything more than postulate. I'd love to see legitimate studies about voltage and mobo/CPU degradation, but that will never happen, you'd have to have a huge sample size of identical systems, and the study would have to go on for a long period of time.

I have used LLC in BIOS or using board mods for a long time, because it has helped with unstable overclocks, and I have never damaged a processor. Could I have done the same thing with higher VCore? Possibly, but I can think of a couple cases where bumping VCore was not helping. Which one is better? There is no true factual data to show either way.
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post #12 of 21
Quote:
Originally Posted by 2thAche View Post
The truth is, nobody here can do anything more than postulate.
You are absolutely right. What we can state as fact though is that if you use LLC and take your core voltage somewhere near Intels rated maximum values you are very likely to exceed those values with the voltage spikes the kick in when going in either direction from a loaded to an unloaded state.
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post #13 of 21
What I'm gathering from this discussion is that it's probably more important to pay attention to the actual range of voltages that your processor sees than it is to worry about having LLC on or off.
Edited by ChronoTrigger - 6/8/10 at 10:17am
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post #14 of 21
Quote:
Originally Posted by Coz_411 View Post
premature ejaculation
what?
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post #15 of 21
Quote:
Originally Posted by infected rat View Post
You are absolutely right. What we can state as fact though is that if you use LLC and take your core voltage somewhere near Intels rated maximum values you are very likely to exceed those values with the voltage spikes the kick in when going in either direction from a loaded to an unloaded state.
Additionally, voltage drops/spikes are exaggerated with LLC on, which makes for an unhappy processor.

Whether it shortens life or not is irrelevant. What matters is that it offers no benefit whatsoever and it DOES have numerous downsides. Where's the logic in using something that's all con and no pro?

Where's Twocables when you need him?
    
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post #16 of 21
So basically, with LLC on and a bios voltage near 1.4v one could quite easily be hitting 1.5v and above due to overshoot?
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post #17 of 21
This pretty much explains why you shouldn't use LLC with 45nm tech.

http://www.anandtech.com/show/2404/5

Best way to use LLC is with voltage offset function (on asus boards, not sure about others). Went into detail about it here.

http://www.overclock.net/8619345-post766.html
Edited by BlackDragon24 - 6/8/10 at 3:02pm
post #18 of 21
Lets say you have your voltage at 1.3 in the BIOS, with LLC off that would be your maximum the motherboard would send to your CPU, with LLC on that would be the minimum your mobo would send to the chip.
    
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post #19 of 21
Thanks for the link BlackDragon. The graphs sum it up nicely.
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post #20 of 21
It also occurs to me that peoples stated vcores are pretty meaningless without knowing if they have LLC enabled or not. It's like giving your core temps without the ambient temperature. Pointless.
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