Nvidia's accelerator shipments can meet estimates because Rubin can replace Blackwell in existing racks, reducing the need for new US power. About 30% of shipments go abroad; if a third of the Blackwell base upgrades, only about 21 GW of new US power is needed by 2028. ERCOT additions, backup engines, converted mining sites and smaller sites should more than cover that need. The estimated share of non-Nvidia accelerators is a weaker assumption. x.com x.com x.com x.com x.com x.com