SAN FRANCISCO -- Nvidia's ( NVDA) profit plunged 73% in its fiscal fourth quarter, but the chipmaker managed to beat Wall Street's lackluster expectations. The Santa Clara, Calif., graphics chipmaker posted net income of $61.7 million, or 11 cents a share, in the three months ended Oct. 26, vs. net income of $235.7 million, or 38 cents a share, at this time last year. Excluding $8.3 million in restructuring charges, as well as $38 million in stock compensation expenses and a $4.5 million charge related to a royalty dispute, Nvidia said it earned 20 cents a share. Analysts polled by Thomson Reuters were looking for 12 cents a share, excluding charges. Shares of Nvidia were up 5%, or 38 cents, at $8 in extended trading Thursday. The company boosted its gross margin two percentage points sequentially to 41% in the third quarter, ahead of its own forecast and the average analyst expectation of 39.6% gross margin. "Improving gross margin while managing operating expenses enabled us to significantly improve our operating fundamentals," said CEO Jen-Hsun Huang in a statement. Sales in the quarter were down 20% year over year at $897.6 million, slightly ahead of the $890 million expected by analysts. The company did not provide a forecast for the current quarter, but is scheduled to hold a conference call with analysts later Thursday.