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Vdroop or not??(LLC) Poll!!

Poll Results: Would you have Vdroop on or off?

 
  • 53% (114)
    Vdroop on
  • 46% (98)
    Vdroop off
212 Total Votes  
post #1 of 84
Thread Starter 
pretty much as the thread suggests Vdroop or not?
i personally would leave it off because for some reasons my i7 and Quad dont like it and crash when idling but pass hours of prime...

but i would like to see what this community prefers.

and i included a poll if you would be kind enough to participate in

and i would love your feedback and experiences with it \\

Update: im starting to think that possibly the mobo may have a factor on LLC more than what i thought. i only have Asus boards which dont seem to like LLC to much so i personally dont run it. i get crashes which Kris Boughton states ironically
from my own experience.

and from the article there are also graphs showing that LLC actually increases power consumption. but keep in mind load voltages are different. 1.28 LLC off and 1.33 LLC on both had the same BIOS vcore VID soo
any other thoughts?

heres the graph


and i found these graphs. keep in mind these are voltages taken from P95 stability test


and now w/ vdroop


w/o vdroop

w/o vdrop


note all pics are from anandtech from this article

EDIT: found some great info, + its a great read here
thanks!!


Edited by bluebunny - 5/22/10 at 11:34pm
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post #2 of 84
I intended to vote for Vdroop On, but I used my keyboard and my vote didn't go as planned. So, my vote was supposed to be Vdroop On.

Anyway, this is one of those questions that I think will never be answered unless we can get somebody to spend a few years with a few different systems that get placed into 2 categories: 1 that runs with LLC disabled, and the other with LLC enabled. Then the person would have to subject all of the systems in both groups to the exact same conditions every single day. Not only that, but all of the systems would have to basically be the most common systems (from the motherboard to the CPU to the power supply, etc.).

Then what needs to happen is the person would need to say "ok, after 5 years, here are the results".

So for now, this is what we have:

A 2-page section of a 13-page article that explains why vDroop should be left alone:
  1. http://www.anandtech.com/cpuchipsets...spx?i=3184&p=5
  2. http://www.anandtech.com/cpuchipsets...spx?i=3184&p=6
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post #3 of 84
I was fully intending to do a test with it, but the time considerations to do it properly and methodologically correct were just too much- I may revisit it over the summer.

At any rate, my hypothesis is that LLC on is fine for non-extreme voltages. By that, I mean vCore less than the max (1.45) , realistically somewhere around less than 1.35.
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post #4 of 84
LLC is fine as long as you aren't pumping a lot of volts through your chip. Also some boards overvolt A LOT when you turn it on like some EVGA boards so you need to watch out for that.
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post #5 of 84
Thread Starter 
@two cables ya i hear where your coming from and i read through that article b4 i got my i7 he makes a interesting point.

so any one else have any thoughts and opinion's on the subject. i know we got a lot of people on here running vdroop off so your thoughts please. and also i think this should help the people wondering if they should run vdroop on or of since i see a thread once in a while pop up "should i use LLC blah blah blah etc etc"

Thanks for those who helped so far
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post #6 of 84
Quote:
Originally Posted by bluebunny View Post
@two cables ya i hear where your coming from and i read through that article b4 i got my i7 he makes a interesting point.

so any one else have any thoughts and opinion's on the subject. i know we got a lot of people on here running vdroop off so your thoughts please. and also i think this should help the people wondering if they should run vdroop on or of since i see a thread once in a while pop up "should i use LLC blah blah blah etc etc"

Thanks for those who helped so far
I think this is going to be one of those things where people will continue to post questions even if we had a sticky in every single forum and even if the background of every OCN page said "there's a sticky for that question". I mean, like Burn pointed out, to be able to arrive at the answer is going to take quite a long time and quite extensive testing. I sincerely doubt that we will ever have any hard evidence because by the time we could get that evidence, technology will have advanced so far that it won't matter by then.
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post #7 of 84
I've been doing the bulk of my o.c. testing with vdroop off (LLC enabled) but I've also recently just gone back to look at more moderate 3.6/3.8... 24/7 type "crunching" overclocks with with vdroop on. I like running with it off but I do kind of wonder if these out-of-spec voltage swings might eventually cause problems down the road? On the other hand does it really matter anyway if I'm not holding on to the system long enough to see any of these possible negative affects before transistioning to newer technology?
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post #8 of 84
That anandtech article is TL;DR.

The truth is: most decent motherboards have a good enough bios team and PWM to be able to bypass Intel's intended vdroop.

I really, really, really, really, really, really doubt it will ever cause any harm to the CPU or board. I think the majority of OCers disable vdroop, except for TwoCables that is. And you get to save a few bucks on your power bill because of the lower idle voltage
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post #9 of 84
you might want to change the poll options as its not clear which is llc on or off.
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post #10 of 84
It's there for a reason.

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