Delaware Court Enjoins Micron Case Against Rambus

Also denies motion to transfer Delaware action to California

LOS ALTOS, California, United States - March 29, 2006 - At a hearing today, the Federal District Court for the District of Delaware issued two rulings regarding where certain patent and other related disputes between Rambus (Nasdaq:RMBS) and Micron are to be decided.

In its first ruling, the court granted a motion by Rambus and issued an injunction against Micron’s further prosecution of a newly-filed Virginia lawsuit against Rambus. The Delaware court ruled that Micron’s allegations could not be pursued in Virginia given the overlap of those allegations with a prior Delaware action filed in August 2000 by Micron.

In its second ruling today, the Delaware court denied a motion by Rambus seeking to transfer the pending Delaware case to California. Neither ruling affects other pending patent or antitrust cases in California by Rambus against Micron.

Additional information regarding this case is available on Rambus’ website at http://investor.rambus.com (under Litigation Update section).

About Rambus Inc.

Rambus is one of the world’s premier technology licensing companies specializing in the invention and design of high-speed chip interfaces. Since its founding in 1990, the company's patented innovations, breakthrough technologies and renowned integration expertise have helped industry-leading chip and system companies bring superior products to market. Rambus’ technology and products solve customers’ most complex chip and system-level interface challenges enabling unprecedented performance in computing, communications and consumer electronics applications. Rambus licenses both its world-class patent portfolio as well as its family of leadership and industry-standard interface products. Headquartered in Los Altos, California, Rambus has regional offices in North Carolina, India, Germany, Japan and Taiwan. Additional information is available at www.rambus.com.