Rambus Signs Patent License Agreement With Renesas Technology Corp.

Five-year agreement covers memory and logic interfaces

LOS ALTOS, California, United States - 9/29/2005   Rambus Inc. (Nasdaq:RMBS), one of the world’s premier technology licensing companies specializing in high-speed chip interfaces, today announced it has signed a patent license agreement with Renesas Technology Corp. that allows the development and manufacture of integrated circuits (ICs) employing interfaces based on Rambus’ patented inventions.

The agreement is for a five-year term and covers high-speed controllers and other interfaces invented by Rambus. Under the agreement, Renesas will provide monetary and other compensation to Rambus. Specific terms of the agreement are confidential.

“Renesas is a global leader in the semiconductor market and signing this renewal represents strong validation of our patent portfolio,” said Harold Hughes, chief executive officer at Rambus. “This agreement continues our relationship with an industry leader and expands the availability of our technology in the market.”

Since its founding in 1990, Rambus has focused on advancing electronic system performance through innovations in logic and memory interfaces, controller architectures, and system design. The result is a broad portfolio of innovations and patents that enables semiconductor manufacturers and system designers to achieve ever-increasing levels of functionality and performance, to lower system costs, to mitigate risk with silicon-proven designs, and to reduce time to market. For more information on Rambus’ patent portfolio, please visit www.rambus.com/products/innovationslicensing/.

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 innovations, breakthrough technologies and integration expertise have helped industry-leading chip and system companies solve their most challenging and complex I/O problems and bring their products to market. Rambus's interface solutions can be found in numerous computing, consumer, and communications products and applications. Rambus is headquartered in Los Altos, California, with regional offices in Chapel Hill, North Carolina; Bangalore, India; Taipei, Taiwan; and Tokyo, Japan. Additional information is available at www.rambus.com.