Hi. I recently got a 7950 and I'm thinking about adding another one but I'm not sure if it would work. The one card takes up two slots and even if I managed to put another card would they be too close together? Please help thank you This is my motherboard http://www.ascendtech.us/dell-4vwf2-ms-7591-motherboard_i_mbd4vwf2ms7591m.aspx