NB run cooler then SB on this board (don't ask me why...) Never went over 70°c NB (with AS5) SB run about 5°c more. I probably just got myself a weak board. I think its a rip off for the price, having to run 1 extra fan both SB/NB show real design flow from ASUS

I have my card set at 90°c never had a shutdown since a installed the 2 fan and AS5 but when i first got this board, it would hit the limit on stock setting with no OC... 90°c SB.