A sells man demonstrates a computer game in a display area of Nvidia Corp. during the second day of the annual 2007 Computex Taipei
A sales man demonstrates a computer game in a display area of Nvidia Corp. during the second day of the annual 2007 Computex Taipei June 6, 2007. Nvidia Corp, the world's top graphics chip maker, said on Wednesday a growing number of average consumers are now using its graphic cards as increasingly complex programs require more sophisticated graphics. Reuters

Nvidia Corp (NVDA.O) forecast fiscal 2013 sales well ahead of market expectations, helped by demand for its graphics chips, sending its shares up 6 percent in extended trade.

Nvidia, whose name is well known to gamers, graphic designers and other high-end users, said it expects 2013 sales of $4.7-$5.0 billion.

We see growth across our entire graphics processing unit (GPU) and mobile-processor business, Chief Executive Jen-Hsun Huang said in a statement.

Analysts, on an average, were looking for sales of $4.45 billion, according to Thomson Reuters I/B/E/S.

For 2013, the company, which has stepped up its push into the mobile devices market, forecast gross margin of about 51-53 percent.

Shares of Santa Clara, California-based Nvidia shares were up 6.2 percent, or 82 cents, at $14 in extended trade. They closed at $13.18 on Tuesday on Nasdaq.