SUNNYVALE, Calif.--(BUSINESS WIRE)--Rambus Inc. (NASDAQ:RMBS) today reported financial results for the second quarter ended June 30, 2015. GAAP Financial Results: Revenue for the second quarter of 2015 was $72.8 million, which was relatively flat on a sequential basis from the first quarter of 2015 primarily due to higher sales of security products offset by lower royalty revenue. As compared to the second quarter of 2014, revenue was down 5% primarily due to lower royalty revenue, offset by hi