Press Release

SGI® To Present At the UBS Global Technology And Services Conference


FREMONT, CA (June 2, 2009) — SGI® (NASDAQ:SGI), today announced that Mark Barrenechea, president & CEO, and Jim Wheat, chief financial officer, will participate in the UBS Global Technology and Services Conference in New York on Monday, June 8, 2009. Mark Barrenechea will present on behalf of SGI at 3:45 p.m. Eastern Time.

The public is invited to listen to a live web cast of the presentation on the Investor Relations section of the company's website at investors.sgi.com. A replay of the web cast will be available approximately two hours after the conclusion of the call.

About SGI
SGI® is a global leader in large-scale clustered computing, clustered storage, HPC and data center enablement and services. SGI is dedicated to solving these industries' most demanding business and technology challenges. Visit www.sgi.com for more information.

Contact Information:

James Wheat
SGI
Chief Financial Officer
510-933-8088
Erik Bylin
SGI
Investor Relations
ebylin@sgi.com

SGI is a registered trademark of Silicon Graphics International Corp.