AGP Definition Stands for "Accelerated Graphics Port." AGP is a type of expansion slot designed specifically for graphics cards. It was developed in 1996 as an alternative to the PCI standard. Since the AGP interface provides a dedicated bus for graphics data, AGP cards are able to render graphics faster than comparable PCI graphics cards. Like PCI slots, AGP slots are built into a computer's motherboard. They have a similar form factor to PCI slots, but can only be used for graphics car...