Full Details on Amazon.com : http://www.amazon.com/gp/product/B00264GHWS?tag=tsukuyomi-20
EVGA 896-P3-1171-AR GeForce GTX 275 Superclocked 896 MB DDR3 PCI-Express 2.0 Graphics Card
PCI Express 20
GeForce GTX 275 Superclocked version with 648 MHz clock
896MB of DDR3 memory
2376 MHz memory clock and 1458 MHz shader clock
Full DirectX 10 Shader model 40 and Open GL 30 Support