Should I pay attention to VCore or VID when overclocking my CPU?

Blake_24

Commendable
Sep 2, 2016
38
0
1,540
When I am overclocking I know that putting too much voltage can harm a cpu. the VID seems to be very steady but the VCore fluctuates a lot. What one should I pay attention to when doing stress tests and seeing if my C-States are working properly?
 
Solution
It will never match, it's not expected to.

When AVX or other modern instructions are present, you can see voltage jumps in the neighborhood of 0.13 or more.

The only thing that matters is what it hits..... I have mine set in BIOS at 1.3875 and it routinely peaks at 1.44 when under RoG Real bench stress testing ... and on occasion, it will hit 1.48 and even break 1.50 for a microsecond.
In order to keep your vcore as stable as possible you need to play with your LLC (Load Line Calibration) setting under BIOS. For some reason this option differs greatly from mobo to mobo, so you need to test under which value it will hold your vcore closest to the value you've assigned to it.
 
It also depends on what loads are being applied. When AVX or other modern instructions are present, you can see voltage jumps in the neighborhood of 0.13 or more. Without knowing specifically "what CPU", any further direction is difficult.

I recommend load testing with RoG Real Bench and HWiNFO to get a handle on voltage range.
 

Blake_24

Commendable
Sep 2, 2016
38
0
1,540


I am currently using a 4790k. I am wondering this because I am worried about hurting my CPU because I can't seem to get the voltage while using the computer to match the adaptive voltage I set in the BIOS.
 
It will never match, it's not expected to.

When AVX or other modern instructions are present, you can see voltage jumps in the neighborhood of 0.13 or more.

The only thing that matters is what it hits..... I have mine set in BIOS at 1.3875 and it routinely peaks at 1.44 when under RoG Real bench stress testing ... and on occasion, it will hit 1.48 and even break 1.50 for a microsecond.
 
Solution