An end of an era in Silicon Valley. Jensen Huang, who co-founded Nvidia in 1993 and transformed it into a central force in the global AI boom, has resigned as CEO, president and board member with immediate effect. His departure follows a turbulent week marked by his admission of an extramarital affair with a woman reportedly suspected by US officials of spying for China, as well as reports of a second relationship with a senior Nvidia executive. CFO Colette Kress has been appointed interim CEO as the board begins its search for a permanent successor. The exit also raises fresh questions about Nvidia's business dealings and alleged chip shipments to China.