Core Voltage Doesn't Change when set in bios

[Daniel Barnett]

Hi,
I recently bought an 8600k and an MSI Gaming Pro Carbon
I set my core voltage to 1.3v as a baseline for overclocking, HWinfo64 and all other software reports a voltage of 1.125 and it never changes. What is going on?

 

[caqde]

The voltage shown in Software is not always accurate. Depending on the motherboard your actual voltage could be higher or lower than that value including the one you set in the BIOS. You would need a multimeter that is touching the right spots on your motherboard to get an accurate picture of what the actual voltage is.

On another note is the reported 1.125V higher than what it said before you increased it to 1.3V in the bios.

 

[TJ Hooker]

Are you looking at the voltage at idle or under load? Are you sure you're looking at Vcore and not VID?

 

[k1114]

Possibly vdroop. Have you read an overclocking guide?

A multimeter for overclocking. That's a new one.

 

[Daniel Barnett]

I have the voltage set to manual VCORE at 1.3v, with windows power plan on high performance it idles at 1.125 and at "load" under occt medium data set it is still at 1.125

I've tried overclocking using intel extreme tuning and i just set the mutiplier and everything else to auto. The voltage averages around 1.32 for a 48x core multiplier. A higher voltage than is probably necessary.

 

[TJ Hooker]

I meant are you sure you're looking at Vcore and not VID in whatever monitoring program you're using, not whether you're setting Vcore in BIOS.

 

[Daniel Barnett]

I meant are you sure you're looking at Vcore and not VID in whatever monitoring program you're using, not whether you're setting Vcore in BIOS.

There is small, medium, and large data set. Small being the most stressful, and large being the least stressful

And yes im sure, because in the home screen of the bios it says 8600k, 100 x 48, 1.3v

 

[Daniel Barnett]

Im reading VID from Hwinfo and core voltage in Intel Extreme Tuning. Both say 1.125

 

[TJ Hooker]

I meant are you sure you're looking at Vcore and not VID in whatever monitoring program you're using, not whether you're setting Vcore in BIOS.

And yes im sure, because in the home screen of the bios it says 8600k, 100 x 48, 1.3v

As I said, I'm not talking about the BIOS. I meant that in HWiNFO64 there are sensor readings for VID, and there are sensor readings for Vcore. You want to be looking at the latter.

Please post a screenshot of hwinfo64.

 

[TJ Hooker]

Im reading VID from Hwinfo and core voltage in Intel Extreme Tuning. Both say 1.125

Ok, that explains it, you want to look at Vcore, not VID. What does hwinfo64 say for Vcore?

 

[Daniel Barnett]

Im reading VID from Hwinfo and core voltage in Intel Extreme Tuning. Both say 1.125

Ok, that explains it, you want to look at Vcore, not VID. What does hwinfo64 say for Vcore?

Which voltage is used for stability when it comes to overclocking?

 

[TJ Hooker]

VID is the nominal voltage the CPU requests based on what frequency it's running at. At stock settings I believe Vcore would be a function of VID. But AFAIK it you can't really change VID. Vcore is the actual voltage that's being supplied to the CPU. Vcore is what you change and what will ultimately determines stability.

I am not aware of any reason to pay attention to VID when overclocking (or otherwise).

Edit: VID may be dependent on p state the CPU is in or something like that, rather than specifically frequency. Same idea though.

 

[Daniel Barnett]

This is what my bios looks like

 

[TJ Hooker]

OK.

Yes, Vcore is what you want to be changing in the BIOS (along with potentially the load line calibration setting, which affects how the core voltage droops under load, not sure what area of your BIOS that would be in). As I said, in hwinfo64 look at Vcore and ignore VID. If Intel XTU "core voltage" is saying the same thing as hwinfo64 VID, I'd say you can probably ignore that too.

 

[Daniel Barnett]

VID is the nominal voltage the CPU requests based on what frequency it's running at. At stock settings I believe Vcore would be a function of VID. But AFAIK it you can't really change VID. Vcore is the actual voltage that's being supplied to the CPU. Vcore is what you change and what will ultimately determines stability.

I am not aware of any reason to pay attention to VID when overclocking (or otherwise).

Edit: VID may be dependent on p state the CPU is in or something like that, rather than specifically frequency. Same idea though.

I've been overclocking all the way back to phenom II and core 2 quad. I guess names have changed over the years.
Overclockng my 4790k through intel extreme affects the Vcore directly, but apparently with newer gens it means something different.
Thanks for your help