CUDA, Compute Unified Device Architecture, is a technology that allows a programmer to use the C programming language to be executed on the GPU. CUDA has been developed by nVidia and to use this architecture, you have to install a nVidia GPU and special streamprocessing drivers. CUDA only works fast with the new GPU series GeForce 8800. According to nVidia the drives works with older GPUs, too, but because of the different streaming architecture it is significantly slower. As of November 19, 2007, the CUDA SDK has not been made publicly available and so far only few developers have actually seen it. For more info see the CUDA homepage.