I didn't have time to cover it in the video but ray tracing makes a huge difference for foveated rendering in VR. Maybe I'll write about it when I have some time.
So far nothing meeting the Oculus reqs (970 GTX or better) will fit in a SFF PC, much less a laptop. Part of that is physical size, but 100W+ TDP for a graphics card alone is never going to be acceptable to most people, if only because of cooling problems and fan noise.