Most recent higher-end laptops seems to have a Thunderbolt 3 connection. However, this does not seem to be case for recent motherboards or graphics cards for desktop computers.
I know that one application of Thunderbolt 3 is connecting external GPUs, which is a laptop-specific need. However, Thunderbolt 3 has other uses as well:
- Seems to provide access to the PCI Express bus in general (although I do not know whether there is any other practical application for this than external GPUs).
- Can provide a high-bandwidth video signal for external displays.
At least the latter would seem to be useful on desktop computers as well. Why is Thunderbolt a mostly laptop-only technology then?