Industry Ships 25 Million XDR(TM) DRAM Memory Devices

Rambus Inc. (NASDAQ:RMBS), one of the world's premier technology
licensing companies specializing in high-speed chip architectures,
today announced that its customers have shipped over 25 million
XDR(TM) DRAM (extreme data rate dynamic random access memory) devices
worldwide. Designed for both high-bandwidth and cost-sensitive
systems, XDR DRAM and the XDR memory architecture are ideally suited
for graphics processing, consumer electronics, network and server
applications, as well as a new generation of compute platforms driven
by multi-core processors. XDR DRAM is the high-performance memory
solution in Sony's breakthrough PLAYSTATION(R)3 (PS3(TM)) computer
entertainment system.

According to Nam Kim, research director at iSuppli Corporation,
"The XDR memory architecture with its underlying inventions is a key
element in creating the rich graphics seen in the Sony PS3 and could
lend itself to future graphics-intensive applications such as HDTV."

The XDR memory architecture operating at 4.0GHz provides an
unmatched 8.0 GB/s of peak memory bandwidth with a single, 2-byte wide
XDR DRAM. XDR DRAM works seamlessly with the XDR Memory Controller
(XMC), XDR IO controller interface cell (XIO), and the XDR Clock
Generator (XCG) to enable unprecedented levels of memory performance
while utilizing the fewest number of ICs. With a roadmap extending to
8.0GHz providing 16.0 GB/s of bandwidth per device, XDR DRAM continues
to provide an order of magnitude higher performance than today's
standard memories.

"The market is demanding higher performance memory solutions to
satisfy the needs of multi-core processing and other compute-intensive
applications," said Sharon Holt, senior vice president of Sales,
Licensing, and Marketing at Rambus. "The XDR memory architecture,
coupled with our engineering services, gives our customers a
competitive advantage in both performance and time-to-market."

The XDR memory architecture features key enabling technologies
built on patented Rambus innovations that include low-voltage,
low-power Differential Rambus Signaling Level (DRSL); Octal Data Rate
(ODR) technology that transfers eight bits of data each clock cycle;
FlexPhase(TM) circuit technology for precise on-chip alignment of data
with clock; and Dynamic-Point-to-Point (DPP) for both enhanced signal
integrity and scalability.

Proven in high-volume and cost-competitive applications, Rambus
solutions are backed by comprehensive engineering support services
that range from chip design to system integration, and can scale for
future cost reduction. For more information on the XDR memory
architecture, as well as the next generation of XDR, the 8GHz XDR2
DRAM with patented micro-threading, please visit www.rambus.com/xdr.
XDR DRAM licensees include Elpida Memory Inc., Qimonda AG, and Samsung
Electronics Co. Ltd.

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.

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