Cores jumping around

[coneil3822]

Is this normal? I havent seen it happen before. Maybe I am just over thinking it. https://streamable.com/ff5tlj

[Haro]

If you mean they keep changing in frequency at idle then for the most part yes 

If you want to be 100% sure update the bios 

[mariushm]

It's fine... every time the application refreshes the screen, there's a spike in cpu usage caused by the application itself and the video card driver (which will probably use a random thread on a random core)

You probably also have other things in the background running.

[coneil3822]

8 minutes ago, TofuHaroto said:

If you mean they keep changing in frequency at idle then for the most part yes 

If you want to be 100% sure update the bios 

 

5 minutes ago, mariushm said:

It's fine... every time the application refreshes the screen, there's a spike in cpu usage caused by the application itself and the video card driver (which will probably use a random thread on a random core)

You probably also have other things in the background running.

Thanks guys. When i go away from my computer temps rise to 60 degrees or so idle and when i come back and move the mouse for example the drop back to 35

[mariushm]

Most likely that is because the bios is configured to slow down the cpu fan to keep the system silent, if the cpu cores idle (don't do much work).

Most likely it will dynamically adjust fan speed to keep the cpu at around 55-60 degrees (or not make more effort if the cpu temperature is already low enough)

 

The CPU will happily work at up to around 80 degree Celsius without any problems, without going bad, nothing to worry about. From cpu's point of view, it works exactly the same at 30 degrees as 60 degrees.

 

When you go back to pc, one or several cores turn on and the fan probably starts spinning faster... As there's no significant additional heat produced by the cpu in so little time, it's easy for the extra fan airflow to bring the temperature down quickly.

 

[coneil3822]

Just now, mariushm said:

Most likely that is because the bios is configured to slow down the cpu fan to keep the system silent, if the cpu cores idle (don't do much work).

Most likely it will dynamically adjust fan speed to keep the cpu at around 55-60 degrees (or not make more effort if the cpu temperature is already low enough)

 

The CPU will happily work at up to around 80 degree Celsius without any problems, without going bad, nothing to worry about. From cpu's point of view, it works exactly the same at 30 degrees as 60 degrees.

 

When you go back to pc, one or several cores turn on and the fan probably starts spinning faster... As there's no significant additional heat produced by the cpu in so little time, it's easy for the extra fan airflow to bring the temperature down quickly.

 

Ive worked out why. It was Windows System Assessment Tool using about 80% of CPU after being idle for 5 mins. I deleted the Task Scheduled for it. All fixed.