On December 11, 2008, PMC-Sierra, Inc. issued a press release updating the outlook for its revenues in the fourth quarter ending December 28, 2008. A copy of the press release is attached hereto as Exhibit 99.1 and incorporated herein by reference.

The information in this Form 8-K and the exhibit attached hereto shall not be deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, regardless of any general incorporation language in such filing.

(d) Exhibits.

Exhibit No.   Description

99.1          Press Release issued by PMC-Sierra, Inc. on December 11, 2008


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                                   SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: December 10, 2008