Nvidia reports 85% revenue surge, authorizes $80B share buyback, and guides next quarter to $89B-$93B as AI data center demand drives record growth.

Nvidia's soaring revenue highlights the escalating demand for AI infrastructure, raising questions about sustainability and geopolitical risks.

Chip giant Nvidia on Wednesday posted record quarterly revenue of $81.6 billion, blowing past Wall Street forecasts as insatiable demand for its artificial intelligence hardware…