Rambus Unveils Low Power Initiative for Multi-Gbps Platforms

Rambus Inc. (NASDAQ:RMBS), one of the world's premier technology
licensing companies specializing in high-speed chip architectures,
today unveiled low power signaling technologies targeted at multi-Gbps
platforms. Through this initiative, Rambus has achieved a 3X power
reduction when compared to traditional serial link implementations
while still delivering high performance. In its labs, Rambus
demonstrated its low power technologies in a test transceiver that
transferred more than 3,600 Terabits of data, the equivalent of the
contents of nearly 100,000 standard-format DVDs, utilizing the power
of only two standard AA batteries.

Rambus will be presenting a paper on the results of this
initiative on February 14, 2007 at the International Solid State
Circuits Conference (ISSCC) in San Francisco, CA.

"Rambus invests in technologies that provide the highest interface
performance for a range of power envelopes," said Kevin Donnelly,
senior vice president of Engineering at Rambus. "This initiative
further illustrates the innovative work our team is doing to help
reduce power consumption without sacrificing performance. Working with
our customers, we look forward to bringing these low power innovations
to market."

Rambus took a systems-level approach to reducing power in a
multi-Gbps transceiver architecture. After analyzing the breakdown of
power distribution in existing transceivers, Rambus developed a test
chip in a 90nm foundry process technology that operates at 6.25 Gbps
over a channel with -15dB of loss. The test transceiver dissipates 14
mW, resulting in a power-performance metric of 2.2 mW/Gbps. Rambus
innovations, such as a low-offset receiver, low-swing voltage-mode
transmitter, low-bandwidth CDR, and low-power phase rotator, enable
significant power reduction over existing state-of-the-art transceiver
designs.

The Rambus low power signaling technologies can be applied to
future parallel bus and serial link products for use in
power-sensitive compute and consumer applications.

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.