"A sort of sound" is about as vague a description as you could give.
What sort of sound - fan noise ?
Are you sure it is the CPU - not the GPU? My GPU card does make the occasional sound as it switches speed.
What system are you running?
When does the sound occur?
Whining Sound. I think Fan noise. I change Compatible Graphic Card Nvedia 730T. Window 10 build 1709 . Only when CC 2018 is running. When quit it goes.