I'm getting a Asrock dual vista board, and a p4D today (upgrading my wifes XP 2500@2.2ghz finnaly) and I'm going to use her existing 6800 agp in it. However I'm looking to upgrade to a pcix videocard eventually, and am curious as to what will work in a pcix4 slot. I've been perusing them at Newegg, and they all say "PCI-X16". What gives?