EVGA 512-P3-N978-AR e-GeForce 9800 GT Akimbo Edition 512MB DDR3 PCI-E 2.0 Graphics Card PCI Express 2.0 Support GeForce 9800 GT with 650MHz clock 512MB 256 bit 1ns GDDR3 memory 950 MHz clock with 1900 MHz effective memory rate Full DirectX 10 and OpenGL 2.1 support