Hi! I build my new computer, I have everything all set, I have a HAF 912, so I get lots of air and all to my gpu (Radeno HD 7950) and I want to overclock it (in catalyst of course). The card ( http://www.newegg.com/Product/Product.aspx?Item=N82E168... ) comes at a core clock of 800Mhz, and an effective memory clock of 1250Mhz. I was wondering what other people have gotten in the past, and what I should expect. Also, what performance boost I would achive.