Nvidia Corp has forecasted second-quarter revenue more than 50% above Wall Street estimates, with the company saying it is boosting supply to meet surging demand for its artificial-intelligence chips. The AI boom has helped Nvidia become the fifth-most valuable US company by market value. Its data center chip sales hit $4.28 billion, beating analyst estimates of $3.89 billion, according to segment data from FactSet. Gaming chip revenue beat Wall Street expectations at $2.24 billion versus estimates of $1.97 billion, according to FactSet data.