RACKABLE SYSTEMS ANNOUNCES ADOPTION OF AMD OPTERON™
PROCESSOR MODELS 252 AND 852

New Line of Processors Complements Rackable Systems' High-Density Server Designs

MILPITAS, CALIF., February 14, 2005 - Rackable Systems, Inc., a leading provider of compute and storage servers for scale out data center deployments, today announced the adoption of the newly launched AMD Opteron™ processor Models 252 and 852 with Direct Connect Architecture. Available across Rackable Systems' line of highly dense, thermally efficient servers, the newest AMD Opteron processor series offers high performance and seamless integration with Rackable Systems' open architecture designs.

"We're pleased to see these new AMD Opteron processor models come to market," said Giovanni Coglitore, founder and chief technology officer at Rackable Systems. "The newest addition to the Opteron processor family enhances the depth and breadth of our own products, enabling us to continue providing the flexibility, choice and performance our customers demand."

The AMD Opteron processor offers compatibility with today's 32-bit software, with a manageable upgrade path to 64-bit capabilities without the need to modify hardware infrastructure. With a compatible operating system, applications can address the full range of memory from each processor. Rackable Systems' four-way AMD Opteron processor-based servers feature up to 64GB of system memory for reliable, optimized performance.

"Working together with Rackable Systems, we are able to help compute- and storage-intensive enterprises reduce their power consumption, while increasing their computing and storage capabilities," said Ben Williams, vice president, Commercial and Server/Workstation Business, AMD. "The new AMD Opteron processor with Direct Connect Architecture offers leading-edge performance, price/performance and reliability and forms the foundation of the superior solutions offered by Rackable Systems."

About Rackable Systems
Rackable Systems, Inc. is a leading provider of compute and storage servers for scale out data center deployments. The company's patented server designs feature key competitive advantages in the areas of density, thermal efficiency, serviceability, power distribution and remote management. Driven by a fierce commitment to superior innovation and customer service, Rackable Systems is one of North America's top server vendors. Founded in 1999 and based in Milpitas, California, Rackable Systems' customers include Lawrence Livermore National Laboratory, nVidia, Tellme Networks, Toshiba America Electronic Components, U.C.S.C. Human Genome Project, Webex and Yahoo!.

To learn more about Rackable Systems, visit www.rackable.com, call 408-240-8300, or email info@rackable.com.

Contact Information:

Rackable Systems Colette LaForce 408-240-8324 claforce@rackable.com

Schwartz Communications, Inc. Jeremy Towsey-French 415-512-0770 rackablesystems@schwartz-pr.com

Rackable Systems is a registered trademark of Rackable Systems®, Inc. A