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we're already at the point where ppl don't buy new PCs because they are still fast enough.

getting to the point where silicon development stops and full-on quantum computing begins has been a long time coming. these d-wave machines are still a long ways from a proper quantum computer.

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There is also the option of alternative substrates, such as graphene, carbon nanotubes or doped diamond.

Diamond could operate at higher temperatures and frequencies (giving us better single-threaded performance again). Graphene would be more suited to the current manufacturing process. I don't know much about nanotube processors other than that they are in research too.

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