I have my x800pro with all 16 pipes enabled with bios at stock pro speeds 475/450. . what I am wondering. and think is common sense. is when gaming or benching. I boost the card up to 545/610 without any heat 38c/69c or stability issues. yet when doing other non3d things on the computer I back the card down to stock speeds. does this make sense I mean there is no reason to leave the card at the highest settings all the time right?