LIMITED POWER OF ATTORNEY FOR
                        SECTION 16 REPORTING OBLIGATIONS
 
        Know all by these presents, that the undersigned hereby makes,
constitutes and appoints Kathy Lanterman, Barry Weinert and Cynthia  Holbrook 
as the undersigned's true and lawful attorney-in-fact, with full power
and authority as hereinafter described on behalf of and in the name, place and
stead of the undersigned to:
 
        (1)     prepare, execute in the undersigned's name and on the
        undersigned's behalf, and submit to the U.S. Securities and Exchange
        Commission (th
e "SEC") a Form ID, including amendments thereto, and any
        other documents necessary or appropriate to obtain codes and passwords
        enabling the undersigned to make electronic filings with the SEC of
        reports required by Section 16(a) of the Securities Exchange Act of 1934
        (the "Exchange Act") or any rule or regulation of the SEC;
 
        (2)     prepare, execute, acknowledge, deliver and file Forms 3, 4, and
        5 (including any amendments thereto) with respect to the securities of
        Silicon Graphics, Inc., a Delaware corporation (the "Company"), with the
        SEC, any national securities exchanges and the Company, as considered
        necessary or advisa
ble under Section 16(a) of the Exchange Act and the
        rules and regulations promulgated thereunder, as amended from time to
        time;
 
        (3)     seek or obtain, as the undersigned's representative and on the
        undersigned's behalf, information on transactions in the Company's
        securities from any third party, including brokers, employee benefit
        plan administrators and trustees, and the undersigned hereby authorizes
        any such person to release any such information to the undersigned and
        approves and ratifies any such release of information; and
 
        (4)     perform any and all other acts which in the discretion of such
&nb
sp;       attorney-in-fact are necessary or desirable for and on behalf of the
        undersigned in connection with the foregoing.
 
        The undersigned acknowledges that:
 
        (1)     this Power of Attorney authorizes, but does not require, such
        attorney-in-fact to act in their discretion on information provided to
        such attorney-in-fact without independent verification of such
        information;
 
        (2)     any documents prepared and/or executed by such attorney-in-fact
        on behalf of the undersigned pursuant to this Power of Attorney will be
        in such form and will contain such information and disclosure a
s such
        attorney-in-fact, in his or her discretion, deems necessary or
        desirable;
 
        (3)     neither the Company nor such attorney-in-fact assumes (i) any
        liability for the undersigned's responsibility to comply with the
        requirement of the Exchange Act, (ii) any liability of the undersigned
        for any failure to comply with such requirements, or (iii) any
        obligation or liability of the undersigned for profit disgorgement under
        Section 16(b) of the Exchange Act; and
 
        (4)     this Power of Attorney does not relieve the undersigned from
        responsibility for compliance with the un
dersigned's obligations under
        the Exchange Act, including without limitation the reporting
        requirements under Section 16 of the Exchange Act.
 
        The undersigned hereby gives and grants the foregoing attorney-in-fact
full power and authority to do and perform all and every act and thing
whatsoever requisite, necessary or appropriate to be done in and about the
foregoing matters as fully to all intents and purposes as the undersigned might
or could do if present, hereby ratifying all that such attorney-in-fact of, for
and on behalf of the undersigned, shall lawfully do or cause to be done by
virtue of this Limited Power of Attorney.
 
                This Power of Attorney shall remain in full force and effect
        until revoked by the undersigned in a si
gned writing delivered to such
        attorney-in-fact.
 
        IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to
be executed as of this 9th day of June 2008.
 
                                        /s/ Timothy L. Pebworth
                                        ----------------------------------------
                                    &
nbsp;   Name: Timothy L. Pebworth