OpenCL, as in 0wn3d by Apple for use with closed hardware like Nvidia? 
OpenCL*is an open standard, initally developed by Apple but supported by AMD, Intel, nVidia and IBM. nVidia uses his propietary CUDA.
The power of Amiga comes from powerful auxillary chips?
Agnus, Denise and Paula were powerful auxiliary chips that assisted the cpu. OpenCL and GPUs are the 2010's version of that. Cell also supports OpenCL.