EVGA GeForce GTX480 1536MB GDDR5 Dual DVI, HDMI, SLI Graphics Cards 015-P3-1480-KR GPU Core Clock : 700MHz GDDR5 Memory Clock: 3696MHz (Effective) CUDA Cores: 480 PCI-E 2.0 Microsoft DirectX 11 support NVidia PhysX, NVidia PureVideo HD, NVidia 2-Way, 3-Way and 4-Way SLI Ready, NVidia 3D vision Surround Ready OpenGL 3.2 Support and NVidia CUDA Technology with CUDA C/C++, DirectCompute 5.0 and OpenCL support Microsoft Windows XP/Vista/7 support