This is the last/best motherboard to have an AGP4X slot @ 1.5V. This board also has a PCI-Express X16 slot too. The versatility continues with the ram. This board accepts DDR or DDR2 memory. However, you cannot operate this board with both DDR &amp; DDR2 memory installed. The installable socket 775 CPU can go up to the first generation Core2Quads from Intel. There is a 5% performance hit per core if a Core2Quad CPU is installed.