CORRECTING AND REPLACING ADVISORY/PMC-Sierra CEO and President Participates at Semico Summit 2004.

Business Editors/High-Tech Writers

CORRECTION...by PMC-Sierra

ADVISORY...For March 14-16

Semico Summit 2004

--(BUSINESS WIRE)

In BW5041 issued March 8, 2004: The WHEN: section of release should read: March 15, 2004 from 10:15 to 11:30 AM MST (sted March 14 to 16, 2004)

The corrected release reads:

ADVISORY/PMC-SIERRA CEO AND PRESIDENT PARTICIPATES AT SEMICO SUMMIT 2004

WHAT:   Bob Bailey, president and CEO at PMC-Sierra, will participate
        on the "Where Is Our Industry Now?" panel on March 15, 2004,
        from 10:15 to 11:30 AM MST.

        PMC-Sierra (Nasdaq:PMCS) is a leading provider of high-speed
        broadband communications and storage semiconductors and
        MIPS-based microprocessors for Enterprise, Access, Metro
        Optical Transport, Storage Area Networking and Wireless
        network equipment.

WHEN:   March 15, 2004 from 10:15 to 11:30 AM MST

WHERE:  Marriott Camelback Inn Resort and Spa, Scottsdale, AZ

About the Semico Summit

The Semico Summit is hosted by Semico Research, a worldwide leader in semiconductor market analysis, research, and custom consulting. This annual event, now in its seventh year, is one of the most anticipated gatherings of semiconductor industry executives and is attended by presidents, CEOs, and vice-presidents from across the full spectrum of semiconductor companies.

The Semico Summit is characterized by a series of high-impact panel discussions focused on the most pressing business and technology issues facing semiconductor industry executives. Panelists are selected from among the top executives at leading technology companies who have demonstrated vision, leadership, and a track record of success. For more information, visit www.semico.com/summit04.

About Semico Research Corporation

Semico Research Corp. is a market and engineering research company located in Phoenix, Arizona. Semico has been operating for over a decade and was founded by a group of semiconductor industry veterans who had a fundamental belief that semiconductor forecasts should be based on consumption in end-use markets. Today, Semico Research is the largest research firm dedicated solely to the semiconductor industry. With analysts located worlwide, Semico is able to provide the most accurate and timely information on semiconductor components, manufacturing technologies and semiconductor end-use markets. For more information, visit www.semico.com.

About PMC-Sierra

PMC-Sierra(TM) is a leading provider of high-speed broadband communications and storage semiconductors and MIPS-based(TM) microprocessors for Enterprise, Access, Metro Optical Transport, Storage Area Networking and Wireless network equipment. The company offers worldwide technical and sales support, including a network of offices throughout North America, Europe and Asia. The company is publicly traded on the Nasdaq Stock Market under the PMCS symbol and is included in the S&P 500 Index. For more information, visit www.pmc-sierra.com.

(C) Copyright PMC-Sierra, Inc. 2004. All rights reserved. PMC-Sierra, PMC, and PMCS are trademarks of PMC-Sierra, Inc. All other trademarks are the property of the respective owners.