I've recently bought a GTX 660 and it 's an OCed edition which comes with gpu clock of 1033 then its written that a gpu boost is 1098 is this clocks will be enabled during games or do i have to enable them ???
More aboutwhat boost
it is done automatically. the card will boost the clock if the thermal allows it. IMO it is a feature for those who don't OC or afraid to OC their card themselves