Firm predicts it will cost $28 billion to build a 2nm fab and $30,000 per wafer, a 50 percent increase in chipmaking costs as complexity rises::As wafer fab tools are getting more expensive, so do fabs and, ultimately, chips. A new report claims that
I didn’t think the ~5nm limit could be broke due to quantum tunneling.
The nm number is just the smallest part on the waffer. It’s not actually the transistor.
They solved this problem by making the nanometer bigger.
https://en.m.wikipedia.org/wiki/5_nm_process