Exhibit 21.1

SILICON GRAPHICS, INC. SUBSIDIARIES



|                                            |  |                              
|------------------------------------------- |  | -----------------------------
|Name                                        |  | Jurisdiction of Incorporation
|Silicon Graphics Federal, Inc.              |  | Delaware                     
|Silicon Graphics World Trade Corporation    |  | Delaware                     
|Cray Research, L.L.C.                       |  | Delaware                     
|Cray Financial Corporation                  |  | Delaware                     
|Cray Research America Latina Ltd.           |  | Delaware                     
|Cray Research Eastern Europe Ltd.           |  | Delaware                     
|Cray Research India Ltd.                    |  | Delaware                     
|Cray Research Asia/Pacific, Inc.            |  | Delaware                     
|Cray Research International, Inc.           |  | Delaware                     
|Silicon Studio, Inc.                        |  | Delaware                     
|Silicon Graphics Real Estate, Inc.          |  | Delaware                     
|MIPS Computer Systems Federal, Inc.         |  | Delaware                     
|MIPS HR Systems, Inc.                       |  | Delaware                     
|ParaGraph International, Inc.               |  | California                   
|WTI Developments, Inc.                      |  | California                   
|Silicon Graphics World Trade B.V.           |  | Netherlands                  
|Silicon Graphics Computer Systems GmbH      |  | Austria                      
|Silicon Graphics S.A./N. V.                 |  | Belgium                      
|Silicon Graphics s.r.o.                     |  | Czech Republic               
|Silicon Graphics A/S                        |  | Denmark                      
|Silicon Graphics Oy                         |  | Finland                      
|Silicon Graphics SA                         |  | France                       
|Silicon Graphics GmbH                       |  | Germany                      
|Silicon Graphics AE                         |  | Greece                       
|Silicon Graphics Kft                        |  | Hungary                      
|Silicon Graphics S.p.A.                     |  | Italy                        
|Silicon Graphics B.V.                       |  | Netherlands                  
|Silicon Graphics Europe Trade BV            |  | Netherlands                  
|Silicon Graphics Trading Sarl               |  | Switzerland                  
|Silicon Graphics A/S                        |  | Norway                       
|Silicon Graphics Sp.z.o.o.                  |  | Poland                       
|Silicon Graphics, S.A.                      |  | Spain                        
|Silicon Graphics AB                         |  | Sweden                       
|Silicon Graphics Finance S.A.               |  | Switzerland                  
|Silicon Graphics Manufacturing Finance Ltd. |  | Jersey, Channel Islands, U.K.
|Silicon Graphics Limited                    |  | Canada                       
|Silicon Graphics S.A.                       |  | Switzerland                  



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|                                                    |  |                         
|--------------------------------------------------- |  | ------------------------
|Silicon Graphics Computer Systems GmbH              |  | Austria                 
|Silicon Graphics Bilgisayar Sistemleri Anonim Siket |  | Turkey                  
|Silicon Graphics Limited                            |  | United Kingdom          
|Cray Research Limited                               |  | United Kingdom          
|Silicon Graphics (Pty) Limited                      |  | Republic of South Africa
|Silicon Graphics S.A.                               |  | Argentina               
|Silicon Graphics SA                                 |  | Chile                   
|Silicon Graphics S.A. de C.V.                       |  | Mexico                  
|Silicon Graphics S.A.                               |  | Venezuela               
|Silicon Graphics Pty Ltd.                           |  | Australia               
|Silicon Graphics Comercio e Servicos Ltda           |  | Brazil                  
|Silicon Graphics Computer Engineering & Technology  |  | China                   
|Silicon Graphics Limited                            |  | Hong Kong               
|Silicon Graphics Systems (India) Limited            |  | India                   
|Silicon Graphics Limited                            |  | New Zealand             
|Silicon Graphics Pte Ltd                            |  | Singapore               
|Korea Silicon Graphics Ltd.                         |  | South Korea             
|Silicon Graphics Limited                            |  | Taiwan                  
|Silicon Graphics Computer Systems Limited           |  | Israel                  
|Silicon Graphics Biomedical (1995) Ltd              |  | Israel                  
|Alias Systems NV                                    |  | Belgium                 
|Cray Research (Canada) Inc.                         |  | Canada                  
|Cray Research (Israel), Ltd.                        |  | Israel                  
|Silicon Graphics Sdn Bhd                            |  | Malaysia