Hey guys, so I have an Antec 900 case "http://www.newegg.com/Product/Product.aspx?Item=N82E16811129021" and I have a Corsair RM 750w Power Supply "http://www.newegg.com/Product/Product.aspx?Item=N82E16817139055". My Antec 900 case does not have vents at the bottom of the case. I'm not sure if my power supply fan should be facing up or down? What is recommended? Do most people face it down or up?