EARTH SCIENCES

SANTA CLARA, CA -- Sun Microsystems, Inc. (Nasdaq: SUNW) today announced it leads the U.S. workstation market with $197 million in revenue and 30 percent marketshare for the total workstation market -- covering all operating systems -- according to Q4CY'01 results reported by analyst firm Gartner Dataquest. Sun demonstrated a 29 percent sequential growth in revenue for this market, eclipsing the closest competitor by five percent and regaining the market's top spot. In addition, Sun continues its stronghold as the #1 UNIX/RISC workstation vendor in the U.S. for the calendar year 2001. Sun's shipment share grew four percent during the year to 76 percent of the market, a figure that easily beats all competitors combined. Furthermore, Sun has led the worldwide UNIX/RISC market for both shipments and revenue since 1996, when Gartner Dataquest began tracking this market segment. ``Sun's growing leadership position reflects the priorities that our customers place on a workstation's ability to handle increasingly massive workloads and ever-expanding complexity. Sun's SPARC/Solaris, 64-bit architecture can deliver better application performance than 32-bit architectures with higher processor clock speeds,'' said Robbie Turner, vice president, Client and Technical Market Products, Sun Microsystems, Inc. ``Sun's relentless innovations in technical computing over the past 20 years have helped make our desktop products the de facto standard for mission-critical computing, and we'll continue to grow our workstation market by extending our business into new areas, including visualization and grid computing.'' Sun's workstations serve the mission-critical computing needs of hundreds of universities and governments around the world as well as customers in software engineering, EDA, classified defense, financial services and Geoscience & Geoengineering. Customers include Landmark Graphics, Norske Shell, Brigham and Women's Hospital, Devon Energy, Motorola, Saab Automobile and the State University of New York at Buffalo. For more information visit www.sun.com