Galaxy GeForce GT 640 GC 1GB DDR3 with 384 Stream Processors, Core Clock: 950MHz, Memory Clock: 891 (1782 Effective) MHz, Processor Clock: 950MHz, Memory Interface: 128-bit. FEATURES: Factory Overclocked, NVIDIA Unified Architecture, NVIDIA CUDA technology, Direct Compute Support, OpenCL Support, NVIDIA PureVideo HD technology, High Definition 1080p Display Support, NVIDIA PhysX technology, Dual-link DVI, VGA and HDMI 1.4a output, Dual-link HDCP Capable, PCI Express 2.0 support, Microsoft DirectX 11 support, OpenGL 4.1 support.