Rambus Technology Provides Unprecedented Bandwidth to Sony Computer Entertainment's Playstation 3

XDR™ memory interface and FlexIO™ processor bus enable high performance computing and rich graphics for multimedia applications

E3 Expo, Los Angeles, Calif., - May 16, 2005 –   Rambus Inc. (Nasdaq:RMBS), one of the world's premier technology licensing companies specializing in high-speed chip interfaces, today revealed that Sony Computer Entertainment's PLAYSTATION®3 (PS3) computer entertainment system incorporates Rambus's XDR™ memory and FlexIO™ processor bus interface solutions for unprecedented bandwidth levels. PLAYSTATION 3 is based on the revolutionary Cell processor that has been developed by IBM, Sony Corporation, Sony Computer Entertainment, and Toshiba Corporation. The memory and processor bus interfaces were designed by Rambus to help enable high performance computing, rich graphics and real-life images.

"It gives us great pride to see a project of this magnitude come to fruition after the years of successful collaboration with Sony Computer Entertainment to design and deliver this incredibly efficient and state-of-the-art computer entertainment system," said Harold Hughes, chief executive officer at Rambus. "Our goal remains to deliver the world's fastest interface solutions which our customers can easily integrate into their designs allowing them to focus on their core business of bringing the world's most advanced, high-volume systems to the marketplace."

The Rambus XDR memory interface, capable of data rates of 3.2GHz to 8.0GHz, achieves data rate speeds that are an order of magnitude higher than today's mainstream memory systems while utilizing fewer DRAMs and fewer controller pins. FlexIO processor buses are capable of running up to 8.0GHz data rates providing bandwidth more than four times faster than best-of-class processor buses available today. All Rambus high-speed interfaces are developed as complete solutions for high-volume, low-cost systems.

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' 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, Calif., with regional offices in Chapel Hill, North Carolina; Bangalore, India; Taipei, Taiwan; and Tokyo, Japan. Additional information is available at www.rambus.com.