Gtx 550 Ti 1GB DDR5 192 Bit 900/4100 HDcp Dual Dvi Hdmi ZOTAC GeForce GTX 550 Ti 1GB GDDR5 PCI Express Dual DVI Video Card General Features: NVIDIA GeForce GTX 550 Ti GPU (graphics processing unit) 192 stream processors 900 MHz core clock 1800 MHz shader clock 1 GB GDDR5 memory 192-bit memory interface 4100 MHz memory clock PCI Express 2.0 x16 interface NVIDIA CUDA Technology NVIDIA PhysX Technology NVIDIA PureVideo HD Technology