NVIDIA Quadro 2000D by PNY 1GB GDDR5 PCI Express Gen 2 x16 Dual DVI-I DL OpenGL, DirectX, CUDA, and OpenCL Profesional Graphics Board, VCQ2000D-PB Chipset: Quadro 2000D Video Memory: 1GB DDR5 Memory Interface: 128-bit Bus: PCI-Express 2.0 x16 RAMDAC: 400 MHz Stream Processors units: 192 Memory Bandwidth: 41.6 GB/s