Now "all" they need to do is incorporate some thermal conduction channels (either fluid or metal, whichever works better) into this concept so that a Chipset-CPU-GPU-SRAM-DRAM stack can be cooled down enough to avoid dopant migration, and they're onto something. The socket for such a thing would need to include the SB port pins (SATA, USB, HD Audio, etc.), plus the video outputs (HDMI / DP), plus perhaps a few PCIe channels for other peripherals. An expandable version might have a single memory channel as well. I could see this being a success as a laptop-on-a-chip, or an office desktop-on-a-chip, as well as a server performance add-in module for a VM host. That memory bandwidth is in the same realm as the top-end discrete GPUs of today, so if the power and heat problems can be solved then this even facilitates a viable gaming computer on-a-chip. Of course, that's an awful lot of power and heat to manage on a single chip, though you would be able to save some by reducing the power consumed in chip-to-chip interconnect circuits and amplifiers.
This is going to be interesting to see where it goes.