Silicon Graphics Announces New Stock Symbol SGID

Company Expects Smooth Transition To OTC Securities Market

MOUNTAIN VIEW, Calif., (November 7, 2005)—Silicon Graphics, a leader in high-performance computing, visualization and storage, announced today it will begin trading its stock on the Over-the-Counter (OTC) securities market under the ticker symbol 'SGID'.

"SGI is a long-term strategic technology supplier that we believe is mission critical to the nation," said Bob Bishop, chairman and CEO, SGI. "Putting our OTC transition in context, there will be no change to our products, services and operations, or our commitments to customers, partners and vendors. We remain focused on our customers and our business objectives."

The OTC is a regulated but decentralized market of securities traded via an electronic quotation system that serves more than 3,000 companies. On the OTC, securities are traded by a network of brokers or dealers who carry inventories of securities to facilitate the buy and sell orders of investors, rather than providing the order matchmaking service seen in specialist exchanges. OTC securities include national, regional, and foreign equity issues. Companies traded OTC must be current in their reports filed with the SEC and other regulatory authorities.

Forward-Looking Statements
This news release contains forward-looking statements relating to future events or expected financial performance that involve risks and uncertainties. The company's future results could differ materially from the expectations discussed herein. Factors that might cause such a difference include risks associated with the timely development, production and acceptance of new products and services; increased competition; dependence on third party partners and suppliers; the failure to achieve expected product mix and revenue levels; and failure to manage costs and generate improved operating results and cash flows. These and other risks are detailed from time to time in SGI's periodic reports that are filed with the Securities and Exchange Commission, including SGI's annual report on Form 10-K for the year ended June 24, 2005.

SILICON GRAPHICS | The Source of Innovation and Discovery™
SGI, also known as Silicon Graphics, Inc. (OTC: SGID), is a 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, providing technologies for homeland security and defense 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.

Silicon Graphics, SGI, the SGI cube and the SGI logo are registered trademarks and The Source of Innovation and Discovery is a trademark of Silicon Graphics, Inc., in the United States and/or other countries worldwide. All other trademarks mentioned herein are the property of their respective owners.