What is Accelerated Graphics Port Function AGP Slot

AGP vs PCI agp expansion slot RM F4ATNB–Computer motherboard showing PCI expansion slots, top of closed chip socket, Ram slots for memory and Gigabyte processor heart_plus download agp slot meaning Accelerated Graphics Port − AGP is a type of expansion bus specifically designed for graphics cards It provides a faster data

agp slot image I have this curious AGP card, altough it's not a GPU What is it and why would you want to use