save my fans

Hello, I was curious if someone could direct me toward the information I seek. To begin with I have an i7 7700k @ 4.2 (3.9 idle w/ speedstep ) on an Asus PRIME Z270-AR mobo. I'd like to figure out if it'd be possible for speedstep to go down to around 2.5-3 ghz while my pc is just idling or I'm...