RACKABLE SYSTEMS, INC. ANNOUNCES 13 NEW SERVERS FEATURING THE LATEST INTEL 1600 MHZ BUS TECHNOLOGY

New Servers Deliver High Performance with 1600 Front Side Bus and 800 Speed Memory

FREMONT, Calif., January 31, 2008 – Rackable Systems, Inc. (NASDAQ: RACK), a leading provider of servers and storage products for large-scale data centers, today announced the availability of thirteen new high-performance servers based on two new motherboard offerings featuring the new Intel® 5400 chipset.

Leveraging the E5462, E5472, X5472 or X5482 Intel Xeon 5000 series quad-core processors, these servers deliver extreme performance with high clock speeds and a 1600 MHz front side bus. Featuring sixteen memory slots compatible with the latest 800 MHz speed fully-buffered DIMMs, the memory performance of these servers is also exceptional.

"Our newest servers feature a range of flexible chassis options and are optimized for memory-oriented markets such as High Performance Computing and Electronic Design Automation," said Tony Gaughan, chief products officer of Rackable Systems. "We continue to focus on developing customizable, build-to-order data center solutions with valued partners like Intel, while improving flexibility and time-to-market for our products."

These new Intel Xeon based servers are available on a range of 1U, 2U and 3U half-depth and standard-depth form factors:

• C1001-L07: Half-depth 1U, one 3.5" or two 2.5" hot-swap hard drives, one PCI-E x16 expansion slot, up to 88 servers per cabinet density
• C2000-T14: Half-depth 2U, internal 3.5" hard drives, two PCI-E expansion slots
• C2002-T14: Half-depth 2U, two 3.5" hot-swap hard drives, two PCI-E expansion slots
• C2004-L07: Half-depth 2U, four 3.5" hot-swap hard drives, one PCI-E x16 expansion slot
• C3001-T14: Half-depth 3U, one 3.5" hot-swap hard drive, three PCI-E and two PCI-X expansion slots
• S3006-T14: Half-depth 3U, six 3.5" hot-swap hard drives, two PCI-E and two PCI-X expansion slots
• S3009-T14: Half-depth 3U, nine 3.5" hot-swap hard drives, two PCI-E and two PCI-X expansion slots
• S3012-L07: Half-depth 3U, twelve 3.5" hot-swap hard drives, one PCI-E x16 expansion slot
• C1104-L07: Standard-depth 1U, four 3.5" hot-swap hard drives, one PCI-E x16 expansion slot
• C2104-T14: Standard-depth 2U, four 3.5" hot-swap hard drives, up to two PCI-E and two PCI-X expansion slots
• S2108-T14: Standard-depth 2U, eight 3.5" hot-swap hard drives, up to two PCI-E and two PCI-X expansion slots
• S3118-T14: Standard-depth 2U, eighteen 3.5" hot-swap hard drives, up to two PCI-E and two PCI-X expansion slots
• Scale Out-L07: Scale Out chassis, two internal 3.5" hot-swap hard drives, one PCI-E x16 expansion slot

Rackable Systems' award-winning x86 server designs—which can help reduce power consumption and cooling costs—enable some of the world's largest data centers to deploy high density, high performance server configurations while significantly reducing operational expenses and total cost of ownership. As organizations continue to focus on decreasing energy consumption and implementing "green" technology in the data center, Rackable Systems' Eco-Logical™ server and storage products enable them to meet these challenges.

About Rackable Systems
Rackable Systems, Inc. (NASDAQ: RACK) is a leading provider of Eco-Logical™ servers and storage for large-scale data center deployments. The company’s products are designed to provide benefits in the areas of density, thermal efficiency, serviceability, power distribution, data center mobility and remote management. Founded in 1999 and based in Fremont, California, Rackable Systems is a founding member of The Green Grid and serves Internet, enterprise software, federal government, entertainment, financial services, oil and gas exploration and HPC customers worldwide.

Contact Information:

Rackable Systems Colette LaForce 510-933-8324 claforce@rackable.com

Schwartz Communications, Inc. Jen Spark and Jack Cowett 415-512-0770 rackablesystems@schwartz-pr.com

Rackable Systems and Eco-Logical are trademarks or registered trademarks of Rackable Systems, Inc. All other trademarks are property of their respective holders.