Nvidia revenue soars 53.6 percent, powers past estimates

(Reuters) - Nvidia Corp reported a better-than-expected 53.6 percent surge in quarterly revenue, driven by strong demand for the company's graphics processing chips used in personal computers and data centers. Nvidia also increased its quarterly dividend to 14 cents per share from 11.5 cents per share and also authorized an additional $2 billion under its buyback program. The Santa Clara, California-based company dominates the high-end PC gaming market, where its chips are used to power graphica