Rambus Reaches Settlement in Securities Class Action

Los Altos, California, United States  -- September 7, 2007 --  Rambus Inc. (Nasdaq:RMBS) today announced that it has reached a settlement in principle regarding the consolidated securities class action filed in July 2006 pertaining to the Company's accounting for option grants and related disclosures. The settlement, which is subject to final documentation as well as review by the court, provides for a payment by Rambus of $18 million and would lead to a dismissal with prejudice of all claims against all defendants in the litigation. In addition, Rambus has been and will continue to be in discussions with its insurers concerning their contribution of a portion of the settlement amount.

This settlement is subject to final documentation as well as preliminary and final court approval.

About Rambus Inc.

Rambus is one of the world's premier technology licensing companies specializing in the invention and design of high-speed chip architectures. 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, Korea and Taiwan. Additional information is available at www.rambus.com.