Analyst Firm Reports Sun Captures Leadership in Worldwide UNIX(R) Server Revenue and Unit Shipments

Highlights from Gartner: -- Sun is number 1 in worldwide UNIX server revenue.

-- Sun is number 1 in worldwide UNIX server shipment.

-- Sun increased its Sun(TM) X86-64 platform server revenue year-to-year

by 378.6%.

-- Sun increased its X86-64 unit year-to-year shipments by 274.6%.

-- Sun is number 1 in worldwide UNIX+ Sun(TM) Linux platform unit

shipments.

-- Sun reclaimed the number three position in all OS server revenue. About Sun Microsystems, Inc.

Since its inception in 1982, a singular vision -- "The Network Is The Computer(TM)" -- has propelled Sun Microsystems, Inc. to its position as a leading provider of industrial-strength hardware, software and services that make the Net work. Sun can be found in more than 100 countries and on the World Wide Web at http://www.sun.com NOTE: Copyright 2005 Sun Microsystems, Inc. All rights reserved. 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. Mark Richardson

Sun Microsystems, Inc.

650-257-4038

mark.richardson@sun.com