Intel gained momentum in the first quarter of 2008, but rival AMD continued to increase marketshare year-over-year, figures from iSuppli show. Intel gained 1.2 percent to reach 79.7 percent of global microprocessor revenue in the first quarter, but was down 0.7 percent from the first quarter of 2007. AMD lost share in between Q4 2007 and Q1 2008, m