EVGA 512-P3-N874-AR e-GeForce 9800 GTX + Superclocked 512 MB DDR3 PCI-Express 2.0 Graphics Card--Lifetime Warranty GeForce 9800 GTX (778MHz clock) 512 MB 256-bit 0.8ns DDR3 Memory (1123MHz clock - 2246MHz effective) 1890MHz Shader Clock 128 Processing Cores PCI Express 2.0