Palit Microsystems GTX 550 Ti 1024 MB 192-bit GDDR5 PCI Express 2.0 x 16 HDCP Ready SLI Support Video Card NE5X55T0HD09F Microsoft DirectX11 SupportNVIDIA CUDA technology with CUDA C/C++DirectCompute 5.0 and OpenCL support NVIDIA PhysX technologyNVIDIA SLI ReadyNVIDIA 3D Vision support NVIDIA Pure Video HD technologyPCI Express 2.0 support Two dual-link DVI-I connectors One mini-HDMI 1.4a connector Dual-Link HDCP capable OpenGL 4.1 support