EVGA 384-P3-N966-TR e-GeForce 9600 GSO Dual Slot Edition 384MB PCI Express 2.0 Graphics Card PCI-Express 2.0 Interface GeForce 9600 GSO with 550MHz clock 384MB 192-bit GDDR3 memory 800 MHz clock/1600 MHz effective memory rate Full DirectX 10 and Open GL 2.1 Support