Rambus and Cadence Collaborate and Deliver Fully Integrated and Independently Verified PCI Express Solutions.

New Offering Combines Best-of-Breed Design and Verification IP for High-Quality, Low-Risk, and Simplified Design Integration

LOS ALTOS, Calif. & SAN JOSE, Calif. -- Rambus Inc. (NASDAQ:RMBS), one of the world's premier technology licensing companies specializing in high-speed chip architectures, and Cadence[R] Design Systems, Inc. (NASDAQ:CDNS), the leader in global electronic-design innovation, today announced fully integrated and independently verified PCI Express[R] solutions. The two companies have collaborated and now offer highly adaptable PCI Express digital cores and PHY IP from Rambus, tightly integrated and verified with Cadence verification IP.

The result of the joint work provides SOC designers with an independently verified solution that seamlessly integrates Rambus' design IP with the automated verification IP from Cadence. This solution helps shorten time to market with an efficient, predictable, and low-risk SOC design and verification to enhance the quality of the end product. In addition, the solution includes the Cadence Compliance Management System (CMS) featuring a PCI Express compliance verification plan (vPlan) and compliance tests, both of which have been specifically customized to the Rambus design IP. The CMS provides an automated plan and metric-driven solution to reach high levels of coverage without the need to develop tests. Based on the Cadence Incisive[R] Plan-to-Closure methodology, the offering allows customers to maximize design quality while minimizing protocol expertise and verification time.

"As a company developing cutting-edge technology, it is critical that we build our solutions on proven, tightly integrated technology," said John F. Brown, vice president, Engineering at Tilera Corporation. "Using the combination of the Rambus configurable PCI Express Digital Controller with the independently developed verification IP from Cadence enables the rapid and successful IP integration we are looking for."

"Through this collaboration, we are able to provide an ideal combination of Cadence verification IP and methodology expertise with Rambus design IP. This solution leverages the strengths of both companies, speeding up the IP integration process and increasing productivity and quality for customers," said Steve Glaser, vice president of Marketing at Cadence's Verification Division. "Designers will gain a higher degree of predictability with the functional coverage provided by the Rambus design-IP-specific CMS. The result gives our mutual customers confidence that they will get to market on schedule with a quality product."

The PCI-SIG-compliant and interoperability-tested Rambus PCI Express solution has been implemented and shipped in numerous high-volume applications. Rambus digital core IP has adaptable application interfaces that minimize the amount of glue logic required for integration. Rambus PHY cells are delivered as complete serial communication cells, optimized for maximum production yield.

"Increasingly powerful computing and consumer electronics applications require IP solutions that are flexible and seamlessly integrate into our customers' designs," said Tim Messegee, vice president of Marketing at Rambus Inc. "With this collaboration, Cadence and Rambus continue our commitment to provide the market with superior integrated IP and EDA solutions that accelerate time to market and reduce design risk."

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. 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' technology and products solve customers' most complex chip and system-level interface challenges enabling unprecedented performance in computing, communications and consumer electronics applications. Rambus licenses both its world-class patent portfolio as well as its family of leadership and industry-standard interface products. Headquartered in Los Altos, California, Rambus has regional offices in North Carolina, India, Germany, Japan, Korea and Taiwan. Additional information is available at www.rambus.com.

About Cadence

Cadence enables global electronic-design innovation and plays an essential role in the creation of today's integrated circuits and electronics. Customers use Cadence software and hardware, methodologies, and services to design and verify advanced semiconductors, consumer electronics, networking and telecommunications equipment, and computer systems. Cadence reported 2006 revenues of approximately $1.5 billion, and has approximately 5,200 employees. The company is headquartered in San Jose, Calif., with sales offices, design centers, and research facilities around the world to serve the global electronics industry. More information about the company, its products, and services is available at www.cadence.com.

PCI Express and PCI-SIG are registered trademarks of the PCI Express Special Interest Group. The PCI-SIG is the special interest group that owns and manages PCI specifications as open industry standards.

Rambus and the Rambus logo are registered trademarks of Rambus Inc. All other trade names are the service marks, trademarks, or registered trademarks of their respective owners.

Cadence is a registered trademark and the Cadence logo is a trademark of Cadence Design Systems, Inc. in the U.S. and other countries. All other trademarks are the property of their respective owners.