You never really get good airflow from a factory computer. I suggest possibly getting a cheap all steel case like this http://www.newegg.com/Product/Product.aspx...N82E16811121087 with high CFM fans. One intake and one out. Or you could go for a little bit more expensive; and get a better case like this http://www.newegg.com/Product/Product.aspx...N82E16811133086 Always rembember, that most of the fans you get from a case are not good CFM. The first case, isn't going to have good CFM fans anyway. The second, more expensive. I would buy the case, and then later decide if you need better fans or not.