The chip maker Micron Technology posted fiscal third-quarter results that were above expectations after signs of stabilization in the personal computer industry that could fuel demand for DRAM chips. Micron said in a statement on Monday its revenue jumped 72 percent to $3.98 billion in the third quarter, which ended in May. Analysts on average had expected revenue of $3.89 billion, according to Thomson Reuters I/B/E/S. Prices for DRAM and NAND chips have been bolstered by limited amounts of investment in new production capacity by Micron and rivals Samsung or SK Hynix. Micron reported a net profit of $806 million, or 68 cents a share, compared with a net profit of $43 million, or 4 cents, a year earlier. Excluding items, Micron earned 79 cents a share. Analysts on average had expected third-quarter earnings of 70 cents a share. Shares of Micron were unchanged in extended trade after closing down 1.85 percent at $31.26 on the Nasdaq.