What is the lead time on a (silicon) chip foundry?

[Quartz]

Raw sand in one end, CPUs, GPUs, RAM, etc out the other end?

Say I'm Bezos. I see that there's a world-wide undercapacity of chip manufacture. I have the billions required to build the plant de novo. So how quickly could I be up and running?

 

[Quartz]

I don't know but I just have a vision of you building a machine in the garage where you pour beach sand in one end and a fully formed working 3090 comes out the other with a budget of £50.

That would be nice!

 

[Quartz]

30 months

https://semiwiki.com/semiconductor-...-go-from-a-muddy-field-to-full-28nm-capacity/

Cool.