POWER OF ATTORNEY
      Know all by these present, that the undersigned hereby
 constitutes
       and appoints Geoff Ribar and Philip Lau,
the undersigned's
       true and lawful attorney-in-fact to:
      (1)	execute for and on behalf of the
undersigned,
 in the undersigned's capacity as an officer, director
and/or more
 than 10% stockholder of SiRF Technology Holdings, Inc.
 (the "Company"), Forms 3, 4 and 5 (including amendments
thereto) with respect to securities of the Company) in
accordance
 with section 16(a) of the Securities Exchange
 Act of 1934 and
 the rules thereunder;
      (2)	do and perform any and all acts for
and on behalf of
the undersigned which may be necessary or
desirable to complete
and execute any such Form 3, 4 or 5 (or amendments thereto),
 and
 timely file such form with the
United States Securities and Exchange
Commission and any stock
exchange or similar authority; and
      (3)	take any other action of any type whatsoever in
 connection with the foregoing which, in the
opinion of such
 attorney-in-fact, may be of benefit to, in the best
interest of,
or legally required by, the undersigned, in connection
with filing
 such Form 3, 4 or 5, it being understood that the
documents executed
by such attorney-in-fact on behalf of the undersigned
pursuant to this
Power of Attorney shall be in such form and shall
contain such terms
 and conditions as such attorney-in-fact may approve in such
attorney-in-fact's discretion.
      The undersigned hereby grants to such
attorney-in-fact
      full power and authority to do and perform any
and every act
       and thing whatsoever requisite, necessary, or proper
 to be done
       in the exercise of any of the rights and powers herein
granted, as
       fully to all intents and purposes as the undersigned
 might or could do
       if personally present, with full power of substitution
or revocation,
hereby
       ratifying and confirming all that such attorney-in-fact
shall lawfully do
or cause
       to be done by virtue of this power of attorney and the
rights and powers
herein
       granted.  The undersigned acknowledges that the foregoing
attorney-in-
fact,
       in serving in such capacity at the request of the
undersigned, is not
assuming,
      nor is the Company assuming, any of the undersigned's
responsibilities to
      comply with section 16 of the Securities Exchange Act
of 1934, and
      that this Power of Attorney does not relieve the
undersigned from
      responsibility for compliance with the undersigned's
 obligations under the
      Exchange Act.  The undersigned further acknowledges
that this
       Power of Attorney authorizes, but does not require,
the attorney-in-fact
to
       act in his discretion on information provided to
 him without independent
       verification of such information.
      This Power of Attorney shall remain in full force
and effect until the
      undersigned is no longer required to file Forms 3,
4 and 5 with respect to
       the undersigned's holdings of and transactions in
securities issued by
the
       Company, unless earlier revoked by the undersigned
in a signed writing
      delivered to the foregoing attorney-in-fact.
      IN WITNESS WHEREOF, the undersigned has caused this
Power of Attorney
       to be executed as of this 25th day of April 2008.


Atul Shingal
Signature

Atul Shingal
Print Name
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