The global PC microprocessor revenues in the fourth quarter of 2011 rose to $10.9bn, up 1.8% compared to third quarter and up 14.2%compared to the corresponding quarter of 2010, according to International Data Corporation’s (IDC) latest PC microprocessor market share study.

IDC Personal Computing research director of semiconductors Shane Rau said the average selling price (ASP) that OEMs pay for PC microprocessors rose more than 9% in 2011, making 2011 the second consecutive year of notable ASP increases.

Overall shipments for the year 2011 grew 3.6% compared to 2010.

Mobile PC processor unit shipments registered a growth of 3.9% in 2011, while x86 server processor unit shipments grew 9% and desktop processor unit shipments grew 2.7%.

Intel garnered 80.3% of the worldwide market share for the fourth quarter of 2011, followed by AMD with 19.6%.

While for the full year 2011, Intel had a global market share of 80.1%, AMD had a share of 19.7%

The improving job growth in the United States and stabilisation of sovereign debt issues in Europe may cause IDC to review this growth rate modestly after the close of the first quarter of 2012.