Filed Pursuant to Rule 424(b)(3)
                                                      Registration No. 333-50958


PROSPECTUS SUPPLEMENT DATED JULY 17, 2001

(To Prospectus filed on November 30, 2000)



                                PMC-SIERRA, INC.


                                   PROSPECTUS

                        1,579,718 Shares of Common Stock

         This Prospectus Supplement together,  with the Prospectus listed above,
is to be used by certain holders of the above-referenced  securities or by their
transferees,  pledgees,  donees or their successors in connection with the offer
and sale of the above referenced securities.

         The table captioned "Selling Stockholders"  commencing on page 3 of the
Prospectus is hereby amended to reflect the following additions and changes.


                                                                Shares to be
                                                               Offered for the
             Selling Stockholders                            Selling Stockholder
------------------------------------------------------     ---------------------
Capital Management Services, LLC                                    4,412

Venture Capital Fund 1999, LLC                                      1,324

JBCL O'Brien Partners, L.P.                                            60