i think what he's trying to say is using a psu like this http://www.newegg.com/Product/Product.asp?Item=N82E16817148027The power supplies that have a 120 millimeter fan on them are they made only for cases that have a vent on top of case or can they be placed upside down. Does it matter? What about venting efficiency?
the top fan of the psu is going to be right up against the top of the case, right?