We consent to the incorporation by reference in the Registration Statement (Form S-8) pertaining to the 2012 Inducement Plan of Affymetrix, Inc. of our reports dated February 28, 2012, with respect to the consolidated financial statements and schedule of Affymetrix, Inc., and the effectiveness of internal control over financial reporting of Affymetrix, Inc. included in its Annual Report (Form 10-K) for the year ended December 31, 2011, filed with the Securities and Exchange Commission.