Apple plainly states that this is unsupported. They don't use a standard displayport 1.2 protocol here. Note that The mac pros support up to 4K. There is some amount of custom work done here, presumably in terms of drivers. It's also an embedded design rather than one that is limited to whatever bandwidth can be run over the current thunderbolt. Also what does Xgrid have to do with anything? Xgrid died a long time ago, and it related to distributed computation. You may...
2/14/15 at 4:11pm