Why does the clock speed change?

[orangecat]

So I've disabled all the settings in my BIOS that would cause CPU clock speed or voltage changes and sometimes one or more of my CPU cores will run at a higher multiplier for a second or two. In AIDA64 when I stability test once in a while I'll check my CPU clock speed statistics and notice that for example core 2 was clocked at 4713Mhz at one point even though the CPU multiplier is set at 46 so it shouldn't be going higher than 46 ever. I don't know if this is a bug in AIDA64 or maybe it was a real reading. Sometimes it's one core sometimes it's all of them.

[themctipers]

CPU bus clock? 

[orangecat]

6 minutes ago, themctipers said:

CPU bus clock? 

100Mhz.

[themctipers]

1 minute ago, Kilobytez95 said:

100Mhz.

Set it to 101? I find 100 unstable on my i7

[orangecat]

3 minutes ago, themctipers said:

Set it to 101? I find 100 unstable on my i7

Will look into it.

[-rascal-]

Is Intel "Turbo Boost" enabled in the UEFI (BIOS)?

Is Intel "Speed Step" enabled in the UEFI (BIOS)?

What is your power option setting in Windows?

 

"Turbo Boost" is the most probable cause.