Your answer has many many determinants like what type of cooling you're using, air or water. The volts on the cpu applied. Ambient temp where the pc is running. I can go on but your question is left wide open.
If I do oc I usually don't hit it hard. Maybe like from a 2.6 to a 2.8 or 3 just for fun so not much added volts to the cpu. Air cooling is all I need. The ambient temp is around 74. I am not a gamer but do a lot of video editing.
I'm using the cooler that came with my PC when I originally bought it (I bought it as an acer about 9 months ago, then gutted it). The fan speed is set to automatic.