Elon Musk's Terafab semiconductor project could cost $5 trillion, Bernstein claims — herculean effort would cost more than 70% of the total yearly US government budget

To build 1 TW of AI silicon per year, Elon Musk's TeraFab would need to process 22.4 million Rubin Ultra GPU wafers, 2.716 million Vera CPU wafers, and 15.824 million HBM4E wafers annually using from 142 to 358 fabs, according to Bernstein.