HI, I have a NVIDIA GeForce 7300 GT in my mac pro, and I want to add another graphics card with an HDMI port so I can hook up my TV. I was wondering if anyone has setup a dual graphics card configuration in their mac that were not identical cards? I'm researching the ASUS EN9500GT TOP/DI/512M GeForce 9500 GT (Newegg Item#:N82E16814121267). Does anyone know if this card is supported on the mac, or know of an hdmi card that is compatible for the mac? Thanks in advance for reading and advice!