Something I want to start working with is massively parallel computation, and the new Mac Pro would be a good candidate for that. Meanwhile I was reading an article about a former teacher of mine Andrew Ng about a paper he wrote on how you can build Googles $1M artificial brain on the cheap (see link above). What they did is outfit a bunch of workstations with Nvidia graphics for $20,000. It's not clear if they are saying the GPU's are 1TFLOP or the workstation is 1TFLOP. At any rate the new mac pro they showed is at 7 TFLOPS I believe, making it quite capable for deep learning algorithms. If it comes in at around $6 then it will be quite cheap too.