I have currently got a graphic card , so I decided to install a intake fan at the rear ,(by googling it I obtained many info about it).but everyone in various forums recommend bottom intake and top exhaust. but unfortunately I don't have a case where I can install top exhaust , so I have my exhaust at the rear end. And to be mentioned I have a faster exhaust fan than the intake. is it a good idea , what are the pros and cons.