Quote Originally Posted by ChuckM View Post
I think it would be better with the psu fan up, blowing into the case like would if it were top mounted. Anyway here's the manual and it says if the fan is on the bottom of psu to point it up.
http://www.antec.com/pdf/manuals/300_EN%20manual.pdf
psu fans dont blow outwards, they blow 'into' themselves so-to-speak