Still bleeding from a costly acquisition, Advanced Micro Devices accounted in the fourth quarter, for overspending $1.6 billion on a graphics chip-maker -- but it posted a narrower loss than analysts feared on surging sales of microprocessors.

AMD shares gained 2.21 percent in after-hours trade, having closed down 23 cents, or 3.50 percent, at $6.34 on the New York Stock Exchange.