Intel and AMD in the second quarter maintained their market share positions in the global microprocessor business amid fast industry growth, reflecting the intense competition among the two companies, according to iSuppli Corp.

Dominant supplier Intel in the second quarter accounted for 80.4 percent of global microprocessor revenue, down from 80.7 percent in the second quarter of 2009 when the company?s share reached a four-year high.

On a sequential basis, Intel gained 0.1 points of share from the 80.3 percent it held in the first quarter of 2010.

AMD?s share amounted to 11.52 percent in the second quarter of 2010, up 0.04 points from 11.48 the same time a year ago. On a sequential basis, AMD saw its share decline by 0.2 points from the 11.72 percent of share it held in the first quarter of 2010.

The static market share situation might suggest that the second quarter was uneventful in terms of the competition between the two major microprocessor suppliers. However, with the market undergoing rapid growth and rapid technological development, the fact that the companies have largely retained their positions indicates they are competing furiously for every tenth of a point of market share. Global microprocessor revenue in the second quarter of 2010 rose 34 percent from the same period in 2009. The annual increase reflects the PCs market?s dramatic recovery from the dismal conditions seen in the second quarter of 2009, when global PC shipments declined by 4.3 percent compared to a year earlier. In contrast, PC shipments in the second quarter of 2010 increased by 22.8 percent from the same quarter in 2009.

Meanwhile, technology as measured from the second quarter evolved significantly during the past 12 months. Approximately 38 percent of notebook PC microprocessors shipped during the period were graphics-enabled microprocessors, up significantly from 2009, according to data from iSuppli?s PC Technology Penetration Forecast.