Power control on 7970 radeon

pyr0_m4n

Honorable
Feb 4, 2013
950
0
11,360
In the catalyst control center, there's a slider for power control. I know it has something to do with the allowed power the card can consume, but what exactly does it do? I've got it set at 0, but would it be better just to max it out so the card can use whatever it needs?
 

Will it make any difference if I just raise it now? in case I OC more in the future? someone said that i could burn the card if I did that.