Rambus Wins First Phase of Hynix Trial

Judge rejects motion to dismiss; patent trial to proceed

LOS ALTOS, California, United States - January 5, 2006  -- Rambus Inc. (Nasdaq:RMBS) today announced that the judge in the patent infringement matter with Hynix Semiconductor has denied Hynix’s request to dismiss Rambus’ case based on unclean hands and document spoliation following a two-week evidentiary hearing. Among other things in the ruling, the Honorable Ronald Whyte held, “the court concludes that Rambus did not engage in unlawful spoliation of evidence.”

In a 42-page ruling, Judge Whyte determined that Rambus should be allowed to argue the merits of its patent infringement position against Hynix for SDRAM, DDR and DDR2 SDRAM memory products. The date for that trial has been set for March 6, 2006.

“We are pleased with this ruling and look forward to proceeding to the patent phase of our case,” said John Danforth, senior vice president and general counsel at Rambus. “We have great confidence in our intellectual property position and are pleased with the opportunity to present our position to a jury.”

Additional information about this case can be found on Rambus’ website at www.rambus.com/inv/ (under Litigation Update section).

About Rambus Inc.

Rambus is one of the world’s premier technology licensing companies specializing in the invention and design of high-speed chip interface. 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’ 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.