Apple Reportedly Developing 5K Retina Thunderbolt Display With Integrated GPU (hothardware.com)
MojoKid quotes a report from HotHardware: If you head over to Apple's website, the Cupertino outfit will happily sell you a 27-inch Thunderbolt display for $999, at least until its inventory runs out. Word on the web is that it's nearly out of stock and Apple doesn't plan to replenish them. Instead, Apple will launch a new version of its Thunderbolt monitor, one that's been upgraded to a 5K resolution and has a discrete GPU stuffed inside. It's an interesting product actually, if you think about it. Depending on the task, it can take some serious graphics muscle to drive a 5K resolution display. It amounts to over 14.7 million pixels (5120x2880), compared to Apple's current generation Thunderbolt display which runs at 2560x1440, or less than 3.7 million pixels. Apple's thinking is likely that if it integrates a GPU capable of driving a 5K resolution into the display itself, it won't have to worry about trying to balance graphics performance with thin and light designs for its future Mac systems.
Don't sent pixels.
You're sending the instructions that go into the GPU, not the pixel data that comes out of the GPU. So you're sending polygon vertices and textures and so on. Worst case is video, and then you are sending an mpeg stream, which is a lot less bandwidth than number of pixels times number of frames.