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CPU voltage descending when running prime95

post #1 of 7
Thread Starter 
When my pc is @ idle my cpu voltage is at 1.40v and when I run prime95 it decreases to 1.32v. Ideas??
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post #2 of 7
Vdrop due the load!
Fix, add more voltage.
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post #3 of 7
It's called vdroop. Basically, your motherboard automatically lowers the CPU voltage when loaded to prevent voltage spikes from damaging it. You can turn it off in the BIOS if you want to, but be aware that on very high voltages this can be dangerous for your CPU (not that high voltages aren't dangerous already )
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post #4 of 7
Quote:
Originally Posted by Shame486 View Post
Vdrop due the load!
Fix, add more voltage.
This. Even with max VDDA voltage mine drops to 1.352v from 1.4v.
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post #5 of 7
Thread Starter 
how bout LLC 0% or 100%
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post #6 of 7
Run the LLC @ 'full calibration'. Also lower your voltage in BIOS, LLC will raise your voltage under load.
EX:
1.40V......1.32V @ full load...LLC disabled
1.275V....1.32V @ full load...LLC full calibration
Edited by IOSEFINI - 6/8/11 at 2:57pm
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post #7 of 7
Another option is to increase the voltage but turn on C1 and C&C without using LLC. LLC basically raises your voltage anyways.

That way under load you get the voltage you need and while idle your chip runs cooler and at a lower voltage.
    
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