In balanced mode, INtel and AMD processors will ramp up from 800 MHz to 2 GHz, to 3 GHz in an instant, and then back down to idle as workload conditions dictate...
Only if nothing is happening (no WIndows updates, no program update checks, etc) will it sit at a constant 800 MHz and 28C, for instance...
Naturally, certain fan control profiles might also allow temps to ramp up before even running the fans in the interest of noise suppression...