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i7 2600k Voltage issue @ 4.8ghz

post #1 of 61
Thread Starter 
So I have manged to get it to boot, and validate @ 4.8ghz. Not stable though, I noticed a droop in the voltage when under load from 1.35 -> 1.33/1.328. Any idea why this is happening? I have tried it with HT on and off. So far no luck staying anywhere near 1.35v.
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post #2 of 61
Set CPU LLC to Ultra High or LLC2 depending on what your motherboard calls it LLC set to Auto or extreme can cause Vdroop.
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post #3 of 61
Quote:
Originally Posted by DSP1 View Post
Set CPU LLC to Ultra High or LLC2 depending on what your motherboard calls it LLC set to Auto or extreme can cause Vdroop.
This.


Vdroop is the cpu vcore under load and the difference between what is set in the bios and what you really get in windows. LLC helps to reduce that difference (vdroop) and can help stability under load.

Hope that helps
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post #4 of 61
Thread Starter 
I'll try it and get back to you guys.
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post #5 of 61
Thread Starter 
Also, what about vrm frequency?
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post #6 of 61
Set vrm freq to 350 manual, set phase to extreme, and cpu current @140%
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post #7 of 61
Thread Starter 
Still getting a slight vdroop on ultra high. Drops to 1.336 then stabilizes at 1.344

Edit: even setting to 1.36 I get vdroop to 1.344. Very annoying as this is under my stable vcore.
Edited by Akkarin - 10/11/11 at 10:51am
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post #8 of 61
Thread Starter 
Bump. 1.37v gives me 1.368 idle but load drops to 1.36, stable for 10m @ 1.36 :X Anyone have any suggestions? I have PLL overvoltage disabled, not sure if that matters, but I read to turn it off after 4.5ghz.
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post #9 of 61
Quote:
Originally Posted by Akkarin View Post
Bump. 1.37v gives me 1.368 idle but load drops to 1.36, stable for 10m @ 1.36 :X Anyone have any suggestions? I have PLL overvoltage disabled, not sure if that matters, but I read to turn it off after 4.5ghz.
Having PLL overvoltage enabled does matter. Especially above 4.5 Ghz. Just make sure you're not confusing PLL overvoltage with CPU PLL.
    
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post #10 of 61
Thread Starter 
I have PLL Overvoltage set to disabled. CPU PLL is set to 1.8v. Are these settings correct? I really want to fix this vdroop issue > 4.5ghz. When I am @ 4.5ghz I get about a .01v vdroop. From 1.285 down to 1.274 fluctuating to 1.28.
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