CPU-Z Voltages higher than BIOS Setting Voltages?

[20mmrain]

Now this subject might have been covered before but I couldn't find an answer I was satisfied with in the Threads here so I am going to ask it anyways.

Alright I was tweaking my i5 750's @3.8 voltages and noticed something when looking in CPU-Z compared to the BIOS.
My voltages actually read higher in CPU-Z than in the BIOS.

Now I was under the impression that yes the voltages do usually read differently in CPU-z than in the BIOS. But I thought it was usually lower because of Vdroop. Well mine read higher.....

For instance I will show you.....

Vcore: 1.3 (In BIOS) = 1.28 to 1.31(in CPU-z)

DIMM: 1.63 (In BIOS) = 1.64 (In CPU-Z)

CPU VTT: 1.175 (IN BIOS) = 1.21 to 1.22 (In CPU-Z)

PCH: 1.10 (In BIOS) = 1.09 (In CPU-Z) <---bad example

CPU PLL: 1.875 (In BIOS) = 1.88 (In CPU-Z)

So with four out of the five showing higher voltages in CPU-Z than in the BIOS I wonder why it reads this way. So I tried reading it off of HW Monitor .... same thing. Next I tried Eleet (EVGA's Overclocking tool)..... same thing.
Like I said I thought the hole purpose for setting these values in the BIOS is so that they would not exceed the numbers you put it when spiking back after Vdroop.

Anyone shed some light on this???? I'm not really worried about it but I would still like to know why!

Thanks in advance guys!

 

[Mussels]

because CPU-Z is generic software.

It could be reading it not knowing abotu some specifics of your board, and thus reading it wrong.

it could also be reading it right, and your motherboard is putting out a higher voltage than you set...

 

[20mmrain]

because CPU-Z is generic software.

It could be reading it not knowing abotu some specifics of your board, and thus reading it wrong.

it could also be reading it right, and your motherboard is putting out a higher voltage than you set...

Well I guess I should be happier about a little higher voltages than lower (for stability ) but let's say it's the later of the too..... do you think it's something that I should keep an eye on more than normal?
Or you would pay it no mind?

I have voltage read points I guess I could just barrow a Multi meter and check it out.... but I would still like to hear from people to see if I am the only one who ever had this experience?

 

[Mussels]

check with the multimeter then. only way to be sure.

 

[sneekypeet]

If you have Load line calibration active in the bios, that would be why. If it is set to auto it is active as well.

 

[20mmrain]

If you have Load line calibration active in the bios, that would be why. If it is set to auto it is active as well.

I don't have LLC in my BIOS settings at all. Since they don't have this option you might be right.... that might be why. I have looked all over the place......for LLC that was my first thought too. Maybe I will look again just to be sure.

 

[sneekypeet]

It would likely be in with all the other voltages. My Asus LE had it, I just assumed yours would as well.

 

[20mmrain]

It would likely be in with all the other voltages. My Asus LE had it, I just assumed yours would as well

Yeah that is kind of strange huh??? I just looked again and unless EVGA calls it something different I don't have it.

The closest thing I have to it is EVGA VDroop Setting: And of course I have that Disabled.

But yeah my Gigabyte board had LLC, My Asus board has LLC, My other Gigabyte Board has LLC, and my old MSI board that I don't use any more had LLC. Come to think of it ...... it's been awhile since I have owned a board that hasn't had LLC on it some where in the settings?

 

[sneekypeet]

LLC does take care of vdroop Thats most likley it. I have seen fluctuations on voltages with it off or on, but at load, without it I can always tell as the CPU voltage drops way less under stress.

 

[[Ion]]

The same thing happens for me, according to the BIOS and CoreTemp my X4 955 runs at 1.35v stock...CPU-Z says 1.408

 

[20mmrain]

The same thing happens for me, according to the BIOS and CoreTemp my X4 955 runs at 1.35v stock...CPU-Z says 1.408

Good so at least I am not the only one.... I guess I am not really concerned about it..... I just want to know if it's right for stability purposes.
Because look think about it...... I mean my over clock will be stable either way but.... with these new i5/i7 voltages they are very sensitive to voltage increases. Some i5/i7's can be killed just by a little bit to much voltage in just the wrong area.
Now I guess that could be true for any over clock but these CPU's seem to be more fragile. And if I don't have the voltage there that means my over clock is actually doing better than I think and even more stable (as in terms of voltages) than I think.
But if the voltage increase is really there that is fine too..... I just want to know about it so I can compensate for it as I raise my over clock so I don't over volt and kill something.

I understand these programs are not 100% accurate but still I think they could do better.

So it looks like I am going to have to get that multimeter.

LLC does take care of vdroop Thats most likley it. I have seen fluctuations on voltages with it off or on, but at load, without it I can always tell as the CPU voltage drops way less under stress.

I thought that VDroop setting and LLC were very similar but not exactly the same thing. Someone explained it to me that way at least a long time ago. But if they are exactly the same thing then damn do I feel silly.
Either way I have seen ups and downs with it on too..... but still I usually see it go under instead of above the voltage. But your right that is probably it.
But if I had a misunderstanding on those two settings thank you for clearing that up for me. I have been wrong on that this hole time then how embarrassing!