Rambus Signs New Technology License Agreement With IBM; Agreement Allows Access to XDR Memory Controller Interface Cell for ASIC Customers

LOS ALTOS, Calif., Jun 15, 2005 (BUSINESS WIRE) -- Rambus Inc. (Nasdaq:RMBS), one of the world's premier technology licensing companies specializing in high-speed chip interfaces, today announced that IBM has signed a new license agreement to allow them access to Rambus's XDR(TM) memory controller interface cell, dubbed XIO. This agreement enables IBM to provide an advanced, high-speed design for high-performance consumer applications utilizing their state-of-the-art 90 nanometer (nm) ASIC process.

Rambus's high-speed XIO cell combined with IBM's IP and advanced process technology capabilities will allow IBM to assist its customers in bringing high performing designs to the market.

"Rambus has a long history of designing and delivering very high speed, advanced interface designs that have been broadly used in the industry," said Tom Reeves, vice president of IBM's Semiconductor Products and Solutions. "We have worked with them on several projects and are pleased to build upon our existing relationship with this new agreement."

The Rambus XIO cell is a high-performance, low-latency controller interface to XDR DRAM memory sub-systems. It is a versatile CMOS macro cell that can be seamlessly integrated into a wide variety of target processes. The general purpose cell is independent of the logical memory controller design, enabling support for a wide variety of memory applications needing high bandwidth and low latency. The XIO provides a wide, on-chip, CMOS-level signaling interface to the memory controller logic and a narrow, high-speed Differential Rambus Signaling Level (DRSL) interface to the external XDR memory system.

"IBM maintains a strong leadership position in processors and process technology and we are happy to extend our working relationship with them to help bring the most advanced products to the market," said Laura Stark, vice president of Platform Solutions at Rambus. "The industry continues to face challenging interface issues as designs increase in speed and users demand more and more functionality. Our engineers are focused on designing and developing the most advanced interface designs that help our customers meet the ever-increasing demands of their customer base."

For additional information on all the Rambus interface products, please go to www.rambus.com/products.

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