V Droop

[Leonard]

Hello community,

 

I have recently gotten my 3570k to 4.7Ghz with 1.220v but bhen i stress test it it goes up from 0.978v at idle to 1.220v and fluctuates from 1.220v to 1.210v then back to 1.220v I had it at 4.4Ghz with 1.128v and there it also fluctuates from 1.128v to 1.120v then back to 1.128v then back to 1.120v.

 

My question is if you, the overclockers, would you consider this to be vdroop?

[crunzaty]

It jumps up and down all the time, this is normal for what i've seen and heard.

[MG2R]

The CPUs and VRMs are designed to scale the voltage according to the requested clock speed, that's why it jumps from 0.978 to 1.220 whe put a load on it.

 

The fluctaution from 1.220 to 1.210 is most likely because the VRMs are never 100% perfect. The same applies to the voltages comming from a PSU, there is always a margin of error on them.

 

Vdroop is when you request 1.2V, but you only get 1.1V, for example. This is caused by internal losses inside the VRM.

[Leonard]

The CPUs and VRMs are designed to scale the voltage according to the requested clock speed, that's why it jumps from 0.978 to 1.220 whe put a load on it.

 

The fluctaution from 1.220 to 1.210 is most likely because the VRMs are never 100% perfect. The same applies to the voltages comming from a PSU, there is always a margin of error on them.

 

Vdroop is when you request 1.2V, but you only get 1.1V, for example. This is caused by internal losses inside the VRM.

Cool. At stock speeds it does that as well. I think i might get a better PSU. Thanks for the views expressed. 

[MG2R]

Cool. At stock speeds it does that as well. I think i might get a better PSU. Thanks for the views expressed. 

Vdroop and Vcore fluctuation has nothing to do with your PSU ;) It's all about the VRM

[Leonard]

Vdroop and Vcore fluctuation has nothing to do with your PSU ;) It's all about the VRM

So i should get a higher grade motherboard then? Mine is the lowest on the ASUS z77 range. P8z77 - v lx but i find it to be good maybe i won't IDK, it works so i will leave it.

[Darell3]

This happens to me when stress testing. But when playing games i dont get vdroop.

[MG2R]

So i should get a higher grade motherboard then? Mine is the lowest on the ASUS z77 range. P8z77 - v lx but i find it to be good maybe i won't IDK, it works so i will leave it.

From what you've posted, I can only conclude that you're not experiencing any Vdroop. Vcore fluctuation is normal and can not be avoided, at all. You can combat Vdroop by downloading the ASUS AI Suite. Going into the Digi+ VRM settings will alow you to set CPU Load-Line Calibration, this will adjust the Vcore voltage to take into account Vdroop.

[Leonard]

From what you've posted, I can only conclude that you're not experiencing any Vdroop. Vcore fluctuation is normal and can not be avoided, at all. You can combat Vdroop by downloading the ASUS AI Suite. Going into the Digi+ VRM settings will alow you to set CPU Load-Line Calibration, this will adjust the Vcore voltage to take into account Vdroop.

Yes i know about that and i do use AI Suite II. I was just wondering if it happens to other people is all.