VDroop question

G

Gillette

[H]ard|Gawd
Joined
Feb 6, 2005
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1,319
I'm going to use my system as an example in this case.

Default VID for my E6750 is 1.35V, but with VDroop CPU-Z shows voltage as 1.312V. I currently have my CPU overvolted to 1.35625V and CPU-Z shows voltage as 1.328V due to VDroop.

Should I assume that because of VDroop my CPU is still being fed voltage that is WITHIN its specs of 1.35V, or is it actually getting the full increased voltage and is outside the norm?
 
As far as getting voltage within specs, you don't have to worry about the voltage being too low unless it is causing instability.

Vdroop is normal, at least on all motherboards that I've ever owned, and you'll probably notice that you get more droop under load than while idling. But as long as your system remains stable, don't worry about going under specs. And you can, of course, go a little over spec without worrying about it either, provided your temps don't get too high.

You should also check your BIOS, because your board/BIOS might be adjusting the voltage down while idling to reduce CPU stress/heat. There is a description in the C2D overclocking thread.
 
I'm not too worried about the voltage being low, more just wondering if I'm actually overvolting or not <_<
 
Nope, if your voltage once Windows is loaded is within spec or just over, you should be fine. So you should be good to go.
 
There's also load/idle vdroop you should be aware of. Most mid to upper board makers include a setting to combat this form of vdroop.

I'll use my board as an example.

I set 1.4625
in Windows I get 1.43
under load I get 1.37

With the setting enabled.

I set 1.4625
in Windows I get 1.43
under load I get 1.42

Without the setting on in the first scenario, prime will fail. To get the 1.42 stable voltage for load I would have to set 1.55, get 1.46 and end up with 1.42 under load. Under idle, that's excessive voltage for doing nothing.
 
Slade said:
Without the setting on in the first scenario, prime will fail. To get the 1.42 stable voltage for load I would have to set 1.55, get 1.46 and end up with 1.42 under load. Under idle, that's excessive voltage for doing nothing.
Click to expand...

Or if you're worried about excessive idle voltage and don't have the setting to combat the droop, you can leave on whichever setting it is that drops the voltage while idling. I can never remember what it's called (there's one to change the multi and one to lower the voltage).
 
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