SANTA CLARA, Calif. -- September 1, 2005 - Sun Microsystems, Inc. (Nasdaq: SUNW) today announced Sun's Enterprise class UltraSPARC(R) IV-based Sun Fire V890 system running the Solaris 10 Operating System (OS) and Sybase IQ has set a new benchmark world record. Sun demonstrates continued SPARC processor excellence and industry-leading performance and price/performance on the Sun Fire V890 server by offering the following advantages:

• Best multi-user performance for any system at the 100GB Scale Factor 24139 TPC-H throughput@100GB -- more than twice the previous best from IBM, 11531 TPC-H throughput@100GB obtained with 16x Opt 2.0GHz processors (August 31, 2005)
• The dual node Sun Fire V890 with a $/QphH of $46, the Best price- performance of any 16-processor configuration at 100GB SF, 35% better than the IBM e325 Cluster at $71. (August 31, 2005)
• The Sun Fire V890 dual node configuration has the lowest total cost of ownership ($485,449) of any 16 processor submission at 100GB, more than 40% cheaper than the IBM e325 Cluster at $863,410 (August 31, 2005)

Actual Test Results Conducted by TPC:

• The dual node Sun Fire V890 system delivered 10487 QphH@100GB at a price performance of $46/QphH@100GB, and with availability date of 8/5/2005.
• The IBM EServer 3215 cluster delivered 12,216 QphH@100GB at a price performance of $71/QphH@100GB, and with a scheduled availability of 11/08/03.
• TPC-H, QphH and $/QphH are trademarks of the Transaction Processing Performance Council (TPC). Additional information on the TPC-H benchmark can be found at www.tpc.org.

About TPC-H

Established by the Transaction Processing Performance Council (TPC), the TPC-H benchmark is an industry-standard Decision Support test designed to measure systems' capability to examine large volumes of data, execute queries with a high degree of complexity, and give answers to critical business questions. The TPC-H benchmark evaluates a composite performance metric (QphH@size) and a price/performance metric $/QphH@size) that measure the performance of various decision support systems by the execution of sets of queries against a standard database under controlled conditions. TPC-H, QphH and $/QphH are trademarks of the TPC. For additional information on the TPC-H benchmark, please visit the Transaction Processing Performance Council's Web site at http://www.tpc.org/.

About Sun Microsystems, Inc.

A singular vision -- "The Network Is The Computer" -- guides Sun in the development of technologies that power the world's most important markets. Sun's philosophy of sharing innovation and building communities is at the forefront of the next wave of computing: the Participation Age. Sun can be found in more than 100 countries and on the Web at http://sun.com.

Sun, Sun Microsystems, the Sun logo, Java, StarOffice, Solaris, and The Network Is The Computer are trademarks or registered trademarks of Sun Microsystems, Inc. in the United States and other countries. All SPARC trademarks are used under license and are trademarks or registered trademarks of SPARC International, Inc. in the United States and other countries. Products bearing SPARC trademarks are based upon an architecture developed by Sun Microsystems, Inc.