Question Z370 vs Z390 Vcore

[thetiesthatbind2018]

Hello! Since the Z370 and Z390 motherboards measure Vcore on a different way, does that mean that a Vcore value added on a Z370 MOBO should be higher than Z390?

What I mean, if I say I run a 9700K with 1.3V in a Z370 do I need a higher or smaller value for the Z390?

 

[TJ Hooker]

Since the Z370 and Z390 motherboards measure Vcore on a different way

Where'd you hear that?

 

[thetiesthatbind2018]

From Intel's page on Reddit I think and also various YT videos. On the Z390 it measures from the CPU Pin Power or something like that, while on Z370 it's from the VRMs. If i'm transferring this correctly.

Where'd you hear that?

 

[TJ Hooker]

Do you have any links?

 

[thetiesthatbind2018]

Do you have any links?

So since the Vcore is measured differently between these two platforms.

Incorrect, however VCore is measured differently between manufacturers, and some manufacturers show both readings.

MSI and ASRock utilize the standard VCore measurement system with no modifications, which measures voltage at the VRM location.

ASUS uses a VR VOUT style of measurement, which measures voltage closer to the CPU socket, giving a more accurate reading of what is actually being applied to the CPU after voltage losses through the copper in the motherboard. The confusion comes in the fact that ASUS has decided to label this as VCore (not technically incorrectly), without mentioning the change, which makes voltage readings appear different from Z370 to Z390.

Gigabyte has both readings on board with two separate sensors. When you set VCore voltage in BIOS, you are affecting the standard VCore measurement, however you can see VR VOUT voltage readings in Windows using a sensor monitoring program like HWINFO64.

To answer the basis of your question with these items out of the way, an ASUS Z390 motherboard will display lower voltage readings than any ASUS Z370 motherboard, or any other Z370/Z390 motherboard when looking at the VCore reading. It should match nearly exactly (or within a margin of error) with a Gigabyte VR VOUT reading.

That’s what I got from Reddit, so I got it wrong in the first place but there are some differences or confusion after all on the matter.

 

[TJ Hooker]

It sounds like any changes made just affect how the Vcore value is being read back in software, not how the core voltage is actually being generated or supplied. So it wouldn't really affect the value that you're setting in the BIOS.

"Applied voltages and load-line levels are comparable to before, but not the software voltage readings."
https://www.overclock.net/forum/276...7Hya0w17pTYFoPwYTWNpuZw7-9_KJMnHNI3wgR-kN5qpc

But I wouldn't expect the voltage required for a given overclock to be the exact same from one motherboard to another regardless, even if there were no difference in how it is being measured.