Nvidia said its board has begun searching for a permanent chief executive and will consider candidates from inside and outside the company. Harvey C. Jones, the former chief executive of Synopsys, will oversee the search after being appointed the first-ever chairman of Nvidia’s board.

Finance chief Colette Kress will serve as interim CEO. The company thanked Huang for his “immeasurable contributions” to Nvidia and the industry but gave no reason for his resignation. Huang did not comment.

His departure follows widespread reports alleging two extramarital affairs: one with a suspected Chinese spy and another with Kimberly Powell, a senior Nvidia executive who leads the company’s healthcare business.