PMC Sierra (PMCS) 8-K/A Completion of Acquisition or Disposition of Assets

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statement on Form S-3 (Nos. 333-70248, 333-44204, 333-34648, 33-86930, 33-90392, 33-96620 and 33-97490) and Form S-8 (Nos. 333-45118, 333-40508, 333-44212, 33-41027, 333-13387, 333-13359, 333-13357, 33-80988, 333-56244, 333-48110, 333-35276, 333-34622, 333-94999, 333-92885, 333-87039, 333-55983, 333-55991, 333-34671, 333-81414, 333-102747, 333-115123, 333-128427, 33-80992 and 33-94790) of PMC-Sierra, Inc. of our report dated February 24, 2006 relating to the Combined Statements of Assets Sold and Liabilities Transferred and Combined Statements of Revenues and Operating Expenses of the Storage Semiconductor Business, a business unit of Avago Technologies Pte. Ltd., as of October 31, 2005 and 2004 and for each of the three years in the period ended October 31, 2005, which appears in this Current Report on Form 8-K/A of PMC-Sierra, Inc.

PricewaterhouseCoopers LLP

San Jose, California

March 10, 2006