I recently swapped from the standard Celeron to a Q8400S CPU when I noticed the temps were very high at idle as you can see in the url below.
The (stock) passive cooler feels well placed (screws are as tight as they can go), used Arctic5 Thermal Paste (tried different paste as well) and replaced both rear fans with F8 PWM Arctic fans (one stock fan had a noise / ball bearing issue). When I remove the cooler I do see that the paste hasn't spread to every corner that perfectly but it shouldn't make
that much of a difference in temps correct? the ambient temperature in the room is around 22 degrees celcius.
Anyone has any idea what the issue could be? I currently do not have a way to get into bios settings to play with voltages or to perform bios updates.
I've swapped back to the Celeron CPU and if the temperatures show correctly it was idle at 60 degrees which seems high too.
https://imgur.com/a/T1WPkyIMin temps at idle are at 60-67 depending on the core.