EVGA 512-P3-N975-AR e-GeForce 9800 GT 512MB DDR3 PCI-E 2.0 Graphics Card PCI Express 2.0 Support GeForce 9800 GT with 600MHz clock 512MB 256 bit 1ns GDDR3 memory 900 MHz clock with 1800 MHz effective memory rate Full DirectX 10 and OpenGL 2.1 support