NVIDIA GeForce GTS250 1GB/ 512MB 256Bit DDR3/DDR2 Graphic Card,vga card,vga,graphic card Memory: 1024MB, 512MBMemory Interface: 256BITBus interface: PCI Express 2.0 Support128 Stream ProcessorRAMDACs: 400 MHz 2nd generation NVIDIA unified architecture  3-way NVIDIA SLI technologyMicrosoft DirectX 10 supportNVIDIA CUDA technologyNVIDIA SLI Multi-Monitor supportGiga Thread TechnologyNVIDIA Lumenex EngineGeForce 3D VisionOpenGL 2.1 Optimization and DirectX 10.0 and Shader Model 4.0 SupportNVIDIA PureVideo HD technologyNVIDIA PhysX-ReadyTwo dual-link DVI outputs support two 2560x1600 resolution DisplaysBuilt for Microsoft Windows VistaDiscrete, Programmable Video ProcessorDual-stream hardware accelerationHDMI function through DVI-HDMI and VGA dongle