Been debating where and when to post this. Juicy. Shows that Apple has a lab somewhere that is working on eGPUs. The very thing I posted about a few weeks ago. (CUDA coming to nMP near you) I decided to try out a variety of cards as they are lying around here. I can write an EFI that gives boot screen, etc but unlike cMP these cards still have no info in the "PCI" section of Profiler. Instead, the usual "There was an error...blah, blah,blah" of unflashed cards. Imagine my surprise when I tossed in an old Quadro 3800 and saw the attached screen. Why oh why would the "Graphics and Displays" section have those TB specific fields? Somebody put them there and it wasn't me. I would guess that Apple has been quietly working on this for some time but has held off introducing either as a favor to Intel, to sell more computers, or just because they are mean. In any case, the system profiler knows what an eGPU is. I would guess that they have a routine in that blocks this info on more common and recent cards, but somehow older obscure cards still show up like this. We will be offering a limited number of eGPU options, but my guess is that eventually Apple themselves will. Or maybe not, I have found that my rMBP becomes an awesome gaming machine when I dock it with TB GTX980. Then I undock and take with me. At which point my 2014 dog-slow Mini becomes a gaming machine, via the same GTX980. So, you could buy 1 pricey GPU and use it with all of your TB equipped Macs. When you wanted to run CUDA on your nMP, BANG ! Crisis 4 on your MBA? BANG ! Sounds far too useful and sensible for Apple to market it. In any case, there it is, proof it is either coming or was tested and set aside. We'll see which.