I'm confused on Windows Perf Mon CPU reading

[Ferris23]

I have my CPU overclocked using the FSB bclk to 103 (lol early 2000's) using an MSI Z590 and an i9 10900. Everything is great. I just noticed however that Windows is reading my CPU lower than what CPU-Z and my bios and any other app I've tested it with read it at. I'm confused by this. Thanks.

 

[Absalom]

This is normal when not under full load. Different polling intervals nets different values at a given time especially when the clocks, multiplier, etc. are dynamically adjusting.

 

[Ferris23]

Ah that makes sense. Thank you. I've been tinkering with CPU bios settings just checking on my work haha.

 

[XoR_]

Windows calculates clock assuming bus speed is 100MHz so it won't be able to show correct processor speed in your case.

 

[Absalom]

Windows calculates clock assuming bus speed is 100MHz so it won't be able to show correct processor speed in your case.

Yeah, doing the math, that's probably the case here.