OrneryBoy SG AGP - Accelerated Graphics Port http://www.webopedia.com/TERM/A/AGP.html http://computer.howstuffworks.com/agp.htm PCI - Peripheral Component Interconnect http://www.webopedia.com/TERM/P/PCI.html http://computer.howstuffworks.com/pci.htm
OrneryBoy SG for video card, both PCI and AGP are compatible PCI generally used for sound, IEEE1394 (Firewire), Networks, TV Tuner cards, etc
pie SG modern mbs will come with pci and agp slots.... although graphic cards can fit into pci slots...the better ones usually go in the agp slot