My system is supported by an ATI Radeon 9550 AGP 256mb graphics card. I have also a spare ATI Sapphire 256mb PCI Express card. I have read recently in a magazine that an PCI Express graphics card has a much faster response than an AGP card. Has anyone had any experience with this, and can confirm or deny this fact, as if the ATI Sapphire PCI Express card IS faster then I will swop them over. Many thanks for anyone taking the time to reply.