LOS ALTOS, Calif.—(BUSINESS WIRE)—December 5, 2007— Rambus Inc. (NASDAQ: RMBS) today announced it has received notification from the Staff of the Securities and Exchange Commission stating that the informal investigation into the Company's past stock option practices has been terminated and that no enforcement action has been recommended to the Commission.

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. Additional information is available at www.rambus.com.

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Contact:

Rambus Inc.
Linda Ashmore, 650-947-5411
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