> An unrelated but very underrated is the egpu. Egpus are external to the pc unlike a dgpu. So you can buy a thin laptop, connect it via Thunderbolt to a rtx 3080 and enjoy faster gpu performance than allowed on any laptop on the market, and enjoy a thin lightweight, silent laptop the rest of the time. Disclaimer Thunderbolt is still a moderate limiting factor in reaching peak performance.

Not just for laptops: this sounds also a bit like what the Switch dock could have been.

(And in some sense, it reminds me of Super FX chip for the SNES.)