Samsung to Offer 1 Gigabit XDR DRAM

Los Altos, California, United States  - December 4, 2009 - Rambus Inc. (NASDAQ: RMBS), one of the world's premier technology licensing companies specializing in high-speed memory architectures, today announced that Samsung Electronics Co., Ltd. will offer a 1 Gigabit XDR™ DRAM memory device. XDR DRAM is a key component of Rambus' award-winning XDR memory architecture. Samsung's 1Gb XDR DRAM device will broaden the availability of XDR technology for gaming, computing and consumer electronics applications.

"Samsung's market leadership means system manufacturers can be assured of a reliable supply of our XDR DRAM," said Sharon Holt, senior vice president of Licensing and Marketing at Rambus. "With XDR memory's world-leading bandwidth performance, designers can meet their system requirements with fewer devices and greater power efficiency."

The XDR memory architecture achieves significantly higher performance than today's standard memories. It provides excellent bandwidth with superior power efficiency for demanding computing and consumer electronics applications.

About Rambus Inc.

Rambus is one of the world's premier technology licensing companies specializing in the invention and design of high-speed memory 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' innovations and solutions enable unprecedented performance in computing, communications and consumer electronics applications. Rambus licenses both its world-class patent portfolio as well as a range of leadership and industry-standard memory solutions. 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.