Hi ,
shady06 : you know i have the exact same setup as you , SLK-947U + V9 smart fan 2
.... i got my smartfan from a TT V9 .
There VERY loud when up full , but i think there the most powerful fans ive used , i was even playing hovercraft with mine , square peice of cardboard round circle cut out in the middle with fan face down ... 😀
My P4 2.6c@3.2 are around 25º/26º in normal use , web browsing , mp3's .etc etc