SGI AND VOLTAIRE BRING HIGH-SPEED INFINIBAND CLUSTERS TO ALTIX FAMILY

FOR IMMEDIATE RELEASE

SGI AND VOLTAIRE BRING HIGH-SPEED INFINIBAND CLUSTERS TO ALTIX FAMILY

Voltaire InfiniBand Interconnect Solutions Allow Altix 350 Customers To
Easily Establish High-Performance Linux Clusters

MOUNTAIN VIEW, Calif. and BEDFORD, Mass. (January 20, 2004)-Silicon Graphics
(NYSE: SGI) and Voltaire today announced that they will jointly provide SGI®
Altix(tm) server customers with Voltaire InfiniBand solutions, enabling easy
creation of high-speed clusters. Voltaire's InfiniBand product line will be
particularly useful to customers seeking to cluster multiple SGI® Altix(tm)
350 server nodes. The SGI Altix 350 server, which was introduced Jan. 12, is
the only fully scalable Linux® mid-range system purpose built specifically
for scientists, design engineers, researchers and other technical computing
users.

SGI Professional Services will offer Voltaire InfiniBand switch routers,
InfiniBand-to-IP and InfiniBand-to-Fibre Channel routers, InfiniBand
adapters, 64-bit Linux InfiniBand software stack and VoltaireVision(tm)
InfiniBand Fabric Management software to customers seeking 64-bit Linux
cluster solutions based on the SGI Altix platform. The Voltaire solutions
also simplify the often difficult task of creating hybrid cluster
environments that enhance existing 32-bit server clusters with 64-bit servers.

The two companies will demonstrate their combined solution at the 2004
LinuxWorld Conference & Expo in New York City Jan. 20-23. A total of five
Altix 350 nodes in two cluster configurations will be interconnected via
Voltaire InfiniBand solutions in the SGI Booth 459, and two other servers
will be interconnected in the Voltaire Booth 861. The systems will run
real-world bioinformatics, chemistry and database applications across
multiple nodes. SGI Altix systems are designed to handle the large data sets
and throughput challenges common to high-performance applications for
manufacturing, oil and gas exploration, earth and environmental sciences
research, genomics and homeland security.

"Today's technical users have requirements for systems that 'scale up' and
ones that 'scale out,'" said Dave Parry, senior vice president and general
manager, Server and Platform Group, SGI. "Scaling out in high-performance
computing environments requires extremely high I/O rates, which presents
particular difficulties to many clustering environments. The powerful
combination of SGI's new Altix 350 server and InfiniBand interconnect
solutions from Voltaire enables customers to deploy a complete solution for
scaling up and scaling out of complex applications and workloads."

"The SGI Altix family answers a powerful desire within the HPC community to
embrace open systems without taking a hit in performance," said Ronnie
Kenneth, chairman and CEO, Voltaire. "SGI's latest Linux server, the
mid-range Altix 350, presents an opportunity to reach even more
performance-conscious technical users with high-throughput Altix clusters.
Today's announcement means that Voltaire solutions can further broaden the
interconnect options available to these important customers."

Voltaire's InfiniBand solutions balance high-performance hardware with
production-ready standards based software stack for HPC clusters. The result
is unmatched performance within InfiniBand clusters and in their connectivity
with the existing infrastructure. 

The SGI Altix family of servers combines industry-standard 64-bit Linux with
the Intel® Itanium® 2 processor family and SGI® NUMAflex(tm) architecture to
enable global shared memory systems from a few to hundreds of processors with
up to 4 terabytes of shared memory, which is a first for Linux OS-based
computing. The Altix 350 server offers breakthrough flexibility and
configurability for mid-range configurations, scaling up to 16 processors and
192GB memory per node. It is uniquely capable of independently scaling across
processors, shared memory and/or I/O on a single, standard chassis with
different expansion modules, making it ideal for demanding technical
applications. In combination with Voltaire's InfiniBand solutions, Altix 350
clusters are designed to scale out to thousands of processors, providing
customers with the industry's premier cluster solution.


This release contains forward-looking statements regarding SGI® technologies
and third-party technologies that are subject to risks and uncertainties.
These risks and uncertainties could cause actual results to differ materially
from those described in such statements. The viewer is cautioned not to rely
unduly on these forward-looking statements, which are not a guarantee of
future or current performance. Such risks and uncertainties include long-term
program commitments, the performance of third parties, the sustained
performance of current and future products, financing risks, the impact of
competitive markets, the ability to integrate and support a complex
technology solution involving multiple providers and users, the acceptance of
applicable technologies by markets and customers, and other risks detailed
from time to time in the company's most recent SEC reports, including its
reports on From 10-K and Form 10-Q.

About Voltaire
Voltaire is a leading provider of high performance InfiniBand solutions for
enterprise data centers and HPC environments. Voltaire's InfiniBand solutions
deliver significant return on investment to the data center by improving the
performance and utilization of clustered databases, shared servers and
storage. For HPC customers, Voltaire leads the industry with the largest
InfiniBand Trade Association-certified switch to support clusters scaling
from hundreds to thousands of nodes. With business headquarters near Boston,
Massachusetts, Voltaire is certified by the IBTA's Integrator's List. More
information about Voltaire is available at www.voltaire.com
<http://www.voltaire.com/>  or by calling 1-800-865-8247.

SILICON GRAPHICS | The Source of Innovation and Discovery(tm) SGI, also known
as Silicon Graphics, Inc., is the world's leader in high-performance
computing, visualization and storage. SGI's vision is to
provide technology that enables the most significant scientific and creative
breakthroughs of the 21st century. Whether it's sharing images to aid in
brain surgery, finding oil more efficiently, studying global climate or
enabling the transition from analog to digital broadcasting, SGI is dedicated
to addressing the next class of challenges for scientific, engineering and
creative users. With offices worldwide, the company is headquartered in
Mountain View, Calif., and can be found on the Web at www.sgi.com.

-end-

Silicon Graphics, SGI, InfiniteReality, OpenGL, OpenML, Onyx, XFS, the SGI
cube and the SGI logo are registered trademarks and Altix, NUMAflex, Open
Inventor, OpenGL Performer, OpenGL Volumizer, OpenGL Vizserver, Onyx4 and The
Source of Innovation and Discovery are trademarks of Silicon Graphics, Inc.,
in the United States and/or other countries worldwide. Intel and Itanium are
registered trademarks of Intel Corporation or its subsidiaries in the United
States and other countries. UNIX is a registered trademark of The Open Group
in the U.S. and other countries. Linux is a registered trademark of Linus
Torvalds in several countries. All other trademarks mentioned herein are the
property of their respective owners.


Media Contacts:

Theresa Campbell
theresac@sgi.com
916.419.0281

Doug Black
Noblemen Group
dblack@noblemengroup.com
781.631.2593

SGI PR Hotline:
650.933.7777


<><><><><><><><><><><><><><><><><><><><>
                            Doug Black
                 Noblemen Communications
<><><><><><><><><><><><><><><><><><><><>
Strategic Marketing & Corporate Communications
  Public Relations ~ Public Speaking Programs
                     Advertising ~ Branding
                    Phone: (781) 631-2593
                      Cell: (781) 389-3772
<><><><><><><><><><><><><><><><><><><><>