I wonder what will happen to the CPU, especially if it’s not speeding up much anymore. Perhaps with Apple doing its own chips, the CPU will just have less and less of the work assigned to it.
if someone figures out a way to bring EUV to mass production scale, we would afaik essentially have a clear path all the way to 3nm
Which still really isn't that much further considering how far we have come so far.
That’s a BIG if.
At some point it was going to be germanium to replace silicon.
The problem is silicon is really cheap compared to germanium, so germanium only makes sense if the increased speed is worth the cost (which it probably isn't for almost all applications);
What’s the cost factor? Ie why not have a UI germanium chip and silicon the rest of it?
He's talking about germanium channel FinFETs, GaAs was intended to entirely replace silicon, which probably was never going to happen.
GaAs logic is probably happening at some point, just not yet. All improvements like that which would be incredibly expensive to develop will be held off on until all cheaper options have been exhausted. It does seem to be slowly moving though.
GaAs is gallium arsenide, which still has applications in high frequency transistors.