EXHIBIT 23.1

Consent of Independent Registered Public Accounting Firm

The Supervisory Board
Infineon Technologies AG:

We consent to the use of our report included in this Registration Statement on Form F-3 and to the reference to our firm under the heading “Experts” in the prospectus, which is part of this Registration Statement.

Our report refers to a change in basis of accounting to International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board.

KPMG AG
Wirtschaftsprüfungsgesellschaft

Munich, Germany
July 14, 2009