my bad. i tought i added the screenshots.
@vamsikrishnawwqq2 @AnthonyLee_ASUS i got 3 screenshots with different timestamps but the idea is the same. Screenshots are taken after the start up. first 10 to 20 seconds the usage is high. After that, it will go to normal usage around 788-800mhz for each core.
It seems that the fan starts spins higher when i enter BIOS. i'm not sure if this is normal or not.