Hi. I have an amd3200 and an asus a8n deluxe sli board. I'm thinking about upgrading my video card. I'm totally confused as to which cards I can use. Would some one kindly help me figure out which pcie bus I have (I think PCIe 16?) and which cards currently are compatible. I'm looking at the 8600gt cards. Some are PCI3 2.0, some are PCIx16.....I'm lost. Thanks in advance.