I currently have a 2.8 Ghz intel core 2 duo iMac (2008) with the upgraded nvidia geforce 8800 GT 512mb and 5gb of ram however I am wanting to play a game that requires FINAL FANTASY XIV thus I am thinking i need to upgrade my video card. What is the best way to do this.... I heard that since my iMac was upgraded it has a connector to the logic board. I was thinking that if a long cable exists that i could run out the bottom of iMac and plug into a new graphics card which is compatible with newer imac or mac pro.... is this possible? if so what cards and cables do i need?