SAN FRANCISCO — Nvidia’s sales of the computing chips powering the artificial intelligence craze surged beyond the lofty bar set by stock market analysts in a performance that may ease recent jitters about a Big Tech boom turning into a bust that topples the world’s most valuable company.

The results announced late Wednesday provided a pulse check on the frenzied spending on AI technology that has been fueling both the stock market and much of the overall economy since OpenAI released its ChatGPT three years ago.

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