Voltaire Ltd. (NASDAQ: VOLT), a leading provider of scale-out data center fabrics, today announced that its switches provide the server-to-server or server-to-storage interconnect fabric for 56 percent of the InfiniBand deployments on the 36 th edition of the TOP500 list of the world’s most powerful supercomputers released this week. This represents more than double the share of any other InfiniBand systems vendor. In addition, Voltaire switches are used in 54 new entries on the list since June 2010, bringing Voltaire’s total count to 121.

Voltaire switches accelerate 31 of the Top 100 systems -- including 3 of the Top 10, and 3 of the 7 total petascale systems on this list. Voltaire switches also comprise the high-performance fabrics for 82 percent of the commercial sites that use InfiniBand.

“Voltaire’s scale-out InfiniBand fabrics consist of our proven Grid Director™ switches and our unique application acceleration and management software which deliver industry-leading performance and efficiency for demanding computing environments,” said Asaf Somekh, vice president of marketing, Voltaire. “The new TOP500 list reflects Voltaire’s continued leadership in the InfiniBand switching market with more deployments than any other InfiniBand switch vendor. All in all, Voltaire switches are powering a quarter of the total compute power created by all of the 500 supercomputers on the list.”

The closely watched TOP500 list, issued twice a year on www.TOP500.org, ranks the most powerful supercomputers worldwide and serves as a valuable tool for tracking trends in supercomputer performance and architectures. The latest list reflects changes from June 2010 to November 2010.

About Voltaire

Voltaire (NASDAQ: VOLT) is a leading provider of scale-out computing fabrics for data centers, high performance computing and cloud environments. Voltaire’s family of server and storage fabric switches and advanced management software improve performance of mission-critical applications, increase efficiency and reduce costs through infrastructure consolidation and lower power consumption. Used by more than 30 percent of the Fortune 100 and other premier organizations across many industries, including many of the TOP500 supercomputers, Voltaire products are included in server and blade offerings from Bull, Fujitsu, HP, IBM, NEC and SGI. Founded in 1997, Voltaire is headquartered in Ra’anana, Israel and Chelmsford, Massachusetts. More information is available at www.voltaire.com or by calling 1-800-865-8247.

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 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 Voltaire’s annual report on Form 20-F for the year ended December 31, 2009. 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.

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