Nasdaq Grants Rambus Additional Filing Extension

Los Altos, California, United States  -- November 21, 2006

--  Rambus Inc. (NASDAQ: RMBS) today announced that, on November 20, 2006, the Listings Qualification Panel of The Nasdaq Stock Market, Inc. (“NASDAQ”) granted Rambus’ request for an extension to file its Form 10-Qs for the quarters ended June 30, 2006 and September 30, 2006. Pursuant to the extension, Rambus’ common stock will continue to be listed on the Nasdaq Global Select Market subject to the filing of above referenced financial statements by February 9, 2007.

The extension was granted based on Rambus’ requests to the Listings Qualification Panel of the NASDAQ Stock Market on September 21, 2006 and November 17, 2006. On November 15, 2006, Rambus received a NASDAQ staff determination letter resulting from the delay in the Company’s filing of its Form 10-Q for the quarter ended September 30, 2006, indicating that the Company failed to comply with the filing requirements for continued listing set forth in Marketplace Rule 4310(c)(14), and that its securities are, therefore, subject to delisting from the Nasdaq Global Select Market. Rambus had previously received a NASDAQ staff determination letter resulting from the delay in the Company’s filing of its Form 10-Q for the quarter ended June 30, 2006 indicating that the Company failed to comply with the filing requirements for continued listing. 

As previously announced, the Audit Committee of the Rambus Board of Directors is currently conducting an independent investigation to review the Company’s historical stock option granting practices and related accounting. The Company has previously disclosed that it would not be able to file its Form 10-Q for the period ending September 30, 2006 on time while the investigation is ongoing. The Audit Committee is making every effort to complete its investigation, and the Company will make every effort to file its restated financial reports as soon as practicable after the completion of the investigation.

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.