Exhibit 23.1



            CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in this Registration Statement on
Form S-1 of our report dated March 31, 2005 (April 20, 2006, as to the effects
of the restatement discussed in Note 2), relating to the financial statements
and financial statement schedule of Cray Inc. appearing in the Annual Report on
Form 10-K of Cray Inc. for the year ended December 31, 2005 (which report
expresses an unqualified opinion and includes an explanatory paragraph related
to the restatement discussed in Note 2), and to the reference to us under the
heading "Experts" in the Prospectus, which is part of this Registration
Statement.



/s/ DELOITTE & TOUCHE LLP

Seattle, Washington
September 27, 2006