Voltaire Switches Drive World's Most Power-Efficient Supercomputers

The high performance and power efficiency of Voltaire Ltds (NASDAQ: VOLT) switching solutions are connecting the worlds most energy efficient supercomputers, according to the new Green500 List (www.green500.org). Voltaire Grid Director InfiniBand switches are powering the worlds most energy-efficient supercomputer at IBM Boeblingen Lab and the worlds fastest Los Alamos Laboratory petaflop supercomputer, which took the No. 3 position for energy performance.

The supercomputers are based on industry-standard technologies and interconnected by Voltaire Grid Director DDR/20 Gbps InfiniBand switches. Delivering 20 Gbps InfiniBand performance, Voltaire switches require on average only 5 watts of power per port, making them a much more energy efficient networking technology than 1 and 10 Gigabit Ethernet. Voltaire also delivered the high performance interconnect for many of the other supercomputers on the list.

One of the most important and challenging problems IT faces is how to address escalating power requirements of large data centers, said Patrick Guay, Executive Vice President Global Sales and General Manager of Voltaire, Inc., the U.S. subsidiary of Voltaire Ltd. Our customers are realizing the energy efficiency afforded by a Voltaire InfiniBand fabric and are using the solution as part of their virtualization and consolidation strategies.

Voltaire solutions are powering both the worlds fastest supercomputer on the Top500 list and the worlds most energy efficient supercomputer on the Green500 list demonstrating that performance does not come at the expense of efficiency, Guay added.

More than 70% of Global 1000 enterprises will face significant data center problems during the next four years requiring substantial capital costs to build new facilities or refurbish existing ones, said Rakesh Kumar, Research VP, Gartner Research. Our research has shown that the immediate green IT issues in data centers are around power, cooling and floor space problems. We believe, therefore that user spending should focus on these areas. In addition, Gartner recommended that during the next two years, users should select core IT hardware, including servers, storage and networking equipment based on their energy characteristics, as well as on traditional IT metrics like price/performance.(1)

The Green500 (www.green500.org) is a list ranking the most energy-efficient supercomputers in the world and serves as a complementary view to the Top500 (www.top500.org) list of the most powerful supercomputers.

More information about the power-efficiency of Voltaires switching solutions, including downloadable whitepapers and a free data center efficiency calculator, is available at http://www.voltaire.com/unifiedfabric.

About Voltaire

Voltaire Ltd. (NASDAQ: VOLT) designs and develops server and storage switching and software solutions that enable high-performance grid computing within the data center. Voltaire refers to its server and storage switching and software solutions as the Voltaire Grid Backbone. Voltaires products leverage InfiniBand technology and include director-class switches, multi-service switches, fixed-port configuration switches, Ethernet and Fibre Channel routers and standards-based driver and management software. Voltaires solutions have been sold to a wide range of end customers including governmental, research and educational organizations, as well as enterprises in the manufacturing, oil and gas, entertainment, life sciences and financial services industries.

Founded in 1997, Voltaire Ltd. is headquartered in Herzliya, Israel, and has its U.S. headquarters in Billerica, Massachusetts. More information about Voltaire is available at www.voltaire.com or by calling 1-800-865-8247.

(1) For additional information, see Gartner Research Note: Green IT: Immediate Issues for Users to Focus On, Rakesh Kumar, August 7, 2008, ID Number: G00159605

Forward Looking Statements

Information provided in this press release may contain statements relating to current expectations, estimates, forecasts and projections about future events that are "forward-looking statements" as defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements generally relate to the Voltaire's plans, objectives and expectations for future operations and are based upon management's current estimates and projections of future results or trends. They also include third-party projections regarding expected industry growth rates. Actual future results may differ materially from those projected as a result of certain risks and uncertainties. These factors include, but are not limited to, those discussed under the heading "Risk Factors" in Voltaires annual report on Form 20-F filed with the Securities and Exchange Commission on May 5, 2008. These forward-looking statements are made only as of the date hereof, and we undertake no obligation to update or revise the forward-looking statements, whether as a result of new information, future events or otherwise.

All product and company names mentioned herein may be the trademarks of their respective owners.

Contacts:

Media Contact:
Voltaire
Christy Lynch, +1 978-439-5407
christyl@voltaire.com
or
Investor Relations Contact:
CCGK Investor Relations
Ehud Helft/Fiona Darmon
+1 646-797-2868 / +972-54-566-3221
info@gkir.com

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