I do a lot of work in CUDA and the design of the nMac Pro is absolutely perfect for CUDA development since 1 card is dedicated to processing. Unfortunately none of the cards offered for the system have CUDA support. Any chance Apple will offer an nVidia card in the future? I find it odd that they went down the AMD route as they use nVidia as the discrete cards in their rMBP products. Yes I know I could use OpenCL but I find it much more difficult to use and debug.