apg slotOlder Expansion Slots on Motherboards 1. AGP Slot. Stands for Accelerated Graphics Port, this slot is available only in older motherboards to connect the graphics card for accelerating 3D output. AGP offers fasterHowever, it is installed on a AGP slot on my Gabyte GA-6VTXE-A Rev. 1.x without any 8X. Thus, this Nvidia VGA Card can be installed on AGP 8X without any problems