| Rank | Site | Computer | Cores | Year | Rmax | Rpeak | | 301 | Semiconductor Company (C)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.2 GHz, Gig-Ethernet
IBM | 736 | 2005 | 2.87 | 4.71 |
| 302 | Government
United States | Cluster Platform 6000 rx1620, Itanium2 1.6 GHz, Quadrics
Hewlett-Packard | 504 | 2006 | 2.87 | 3.23 |
| 303 | NOAA/Geophysical Fluid Dynamics Laboratory (GFDL)
United States | SGI Altix 3700 Bx2, 1.5 GHz, Numalink
SGI | 512 | 2005 | 2.87 | 3.07 |
| 304 | NOAA/Geophysical Fluid Dynamics Laboratory (GFDL)
United States | SGI Altix 3700 Bx2, 1.5 GHz, Numalink
SGI | 512 | 2005 | 2.87 | 3.07 |
| 305 | NOAA/Geophysical Fluid Dynamics Laboratory (GFDL)
United States | SGI Altix 3700 Bx2, 1.5 GHz, Numalink
SGI | 512 | 2005 | 2.87 | 3.07 |
| 306 | Bank (J)
United Kingdom | Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz
Hewlett-Packard | 800 | 2005 | 2.86 | 5.12 |
| 307 | Bank (J)
United Kingdom | Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz
Hewlett-Packard | 800 | 2005 | 2.86 | 5.12 |
| 308 | Bank (J)
United Kingdom | Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz
Hewlett-Packard | 800 | 2005 | 2.86 | 5.12 |
| 309 | Bank (J)
United Kingdom | Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz
Hewlett-Packard | 800 | 2005 | 2.86 | 5.12 |
| 310 | Bank (J)
United Kingdom | Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz
Hewlett-Packard | 800 | 2005 | 2.86 | 5.12 |
| 311 | Bank (J)
United Kingdom | Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz
Hewlett-Packard | 800 | 2005 | 2.86 | 5.12 |
| 312 | Bank (J)
United Kingdom | Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz
Hewlett-Packard | 800 | 2005 | 2.86 | 5.12 |
| 313 | Bank (J)
United Kingdom | Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz
Hewlett-Packard | 800 | 2005 | 2.86 | 5.12 |
| 314 | Bank (J)
United Kingdom | Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz
Hewlett-Packard | 800 | 2005 | 2.86 | 5.12 |
| 315 | Sun Trust Florida
United States | Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz
Hewlett-Packard | 800 | 2005 | 2.86 | 5.12 |
| 316 | Sun Trust Florida
United States | Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz
Hewlett-Packard | 800 | 2005 | 2.86 | 5.12 |
| 317 | Sun Trust Florida
United States | Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz
Hewlett-Packard | 800 | 2005 | 2.86 | 5.12 |
| 318 | Sun Trust Florida
United States | Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz
Hewlett-Packard | 800 | 2005 | 2.86 | 5.12 |
| 319 | Government
United States | Cray XT3, 2.4 GHz
Cray Inc. | 740 | 2005 | 2.86 | 3.55 |
| 320 | Digital Media Company (D)
United States | Blade Cluster BL-20P, Pentium4 Xeon 2.8 GHz, GigEthernet
Hewlett-Packard | 1000 | 2005 | 2.86 | 5.60 |
| 321 | Digital Media Company (D)
United States | Blade Cluster BL-20P, Pentium4 Xeon 2.8 GHz, GigEthernet
Hewlett-Packard | 1000 | 2005 | 2.86 | 5.60 |
| 322 | Digital Media Company (D)
United States | Blade Cluster BL-20P, Pentium4 Xeon 2.8 GHz, GigEthernet
Hewlett-Packard | 1000 | 2005 | 2.86 | 5.60 |
| 323 | Digital Media Company (D)
United States | Blade Cluster BL-20P, Pentium4 Xeon 2.8 GHz, GigEthernet
Hewlett-Packard | 1000 | 2005 | 2.86 | 5.60 |
| 324 | Digital Media Company (D)
United States | Blade Cluster BL-20P, Pentium4 Xeon 2.8 GHz, GigEthernet
Hewlett-Packard | 1000 | 2005 | 2.86 | 5.60 |
| 325 | Digital Media Company (D)
United States | Blade Cluster BL-20P, Pentium4 Xeon 2.8 GHz, GigEthernet
Hewlett-Packard | 1000 | 2005 | 2.86 | 5.60 |
| 326 | Digital Media Company (D)
United States | Blade Cluster BL-20P, Pentium4 Xeon 2.8 GHz, GigEthernet
Hewlett-Packard | 1000 | 2005 | 2.86 | 5.60 |
| 327 | Digital Media Company (D)
United States | Blade Cluster BL-20P, Pentium4 Xeon 2.8 GHz, GigEthernet
Hewlett-Packard | 1000 | 2005 | 2.86 | 5.60 |
| 328 | Digital Media Company (D)
United States | Blade Cluster BL-20P, Pentium4 Xeon 2.8 GHz, GigEthernet
Hewlett-Packard | 1000 | 2005 | 2.86 | 5.60 |
| 329 | Digital Media Company (D)
United States | Blade Cluster BL-20P, Pentium4 Xeon 2.8 GHz, GigEthernet
Hewlett-Packard | 1000 | 2005 | 2.86 | 5.60 |
| 330 | Digital Media Company (D)
United States | Blade Cluster BL-20P, Pentium4 Xeon 2.8 GHz, GigEthernet
Hewlett-Packard | 1000 | 2005 | 2.86 | 5.60 |
| 331 | Digital Media Company (D)
United States | Blade Cluster BL-20P, Pentium4 Xeon 2.8 GHz, GigEthernet
Hewlett-Packard | 1000 | 2005 | 2.86 | 5.60 |
| 332 | EDS
United Kingdom | SuperDome 875 MHz/HyperPlex
Hewlett-Packard | 1536 | 2006 | 2.85 | 5.38 |
| 333 | Telecom Italia
Italy | SuperDome 875 MHz/HyperPlex
Hewlett-Packard | 1536 | 2006 | 2.85 | 5.38 |
| 334 | Telecom Italia
Italy | SuperDome 875 MHz/HyperPlex
Hewlett-Packard | 1536 | 2006 | 2.85 | 5.38 |
| 335 | Telecommunication Company
United States | SuperDome 1 GHz/HyperPlex
Hewlett-Packard | 1536 | 2006 | 2.85 | 5.38 |
| 336 | Telecommunication Company
United States | SuperDome 1 GHz/HyperPlex
Hewlett-Packard | 1536 | 2006 | 2.85 | 5.38 |
| 337 | Semiconductor Company (C)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.2 GHz - Gig-Ethernet
IBM | 734 | 2005 | 2.85 | 4.70 |
| 338 | Semiconductor Company (C)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 722 | 2005 | 2.83 | 5.20 |
| 339 | BMW AG
Germany | Integrity Superdome, Itanium2 1.5 GHz, HyperPlex
Hewlett-Packard | 768 | 2006 | 2.81 | 4.61 |
| 340 | Telecommunication Company
United States | Integrity Superdome, Itanium2 1.5 GHz, HyperPlex
Hewlett-Packard | 768 | 2006 | 2.81 | 4.61 |
| 341 | Defense Classified
United States | Cluster Platform 4000 DL145 Opteron 2.4 GHz GigEthernet
Hewlett-Packard | 1024 | 2005 | 2.80 | 4.92 |
| 342 | University of Notre Dame
United States | Union Station Cluster - Fire V60x/X2100 Cluster Opteron 2.2GHz dual core/Xeon 3.06GHz, GigEthernet
Sun Microsystems | 960 | 2006 | 2.80 | 4.62 |
| 343 | DCSC, University of Copenhagen
Denmark | eServer 326 Cluster. Opteron 2.6 GHz, GigEthernet
IBM | 1024 | 2005 | 2.79 | 5.32 |
| 344 | Semiconductor Company (L)
India | eServer, Opteron 2.6 GHz, GigEthernet
IBM | 1024 | 2005 | 2.79 | 5.32 |
| 345 | Irish Centre for High-End Computing
Ireland | Walton - eServer, Opteron 2.4 GHz, GigEthernet
IBM | 968 | 2005 | 2.79 | 4.65 |
| 346 | Gaming Company (B)
Taiwan | Blade Cluster BL-20P, Pentium4 Xeon 2.8 GHz, GigEthernet
Hewlett-Packard | 884 | 2005 | 2.77 | 4.95 |
| 347 | Gaming Company (B)
Taiwan | Blade Cluster BL-20P, Pentium4 Xeon 2.8 GHz, GigEthernet
Hewlett-Packard | 884 | 2005 | 2.77 | 4.95 |
| 348 | Acxiom
United States | Cluster Platform 3000 DL360G3 Xeon 3.2 GHz Myrinet
Hewlett-Packard | 800 | 2005 | 2.76 | 5.12 |
| 349 | Deutscher Wetterdienst
Germany | eServer pSeries p5 575 1.9 GHz
IBM | 416 | 2005 | 2.76 | 3.16 |
| 350 | Deutscher Wetterdienst
Germany | eServer pSeries p5 575 1.9 GHz
IBM | 416 | 2005 | 2.76 | 3.16 |
| 351 | Semiconductor Company (C)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.2 GHz - Gig-Ethernet
IBM | 698 | 2005 | 2.75 | 4.47 |
| 352 | Government
Germany | Cluster Platform 3000 DL360G4 Xeon 3.4 GHz, Myrinet
Hewlett-Packard | 512 | 2005 | 2.74 | 3.48 |
| 353 | Government
United States | Cluster Platform 3000 DL360G4 Xeon 3.4 GHz, Myrinet
Hewlett-Packard | 512 | 2005 | 2.74 | 3.48 |
| 354 | Government
Germany | Cluster Platform 3000 DL360G4 Xeon 3.4 GHz, Myrinet
Hewlett-Packard | 512 | 2005 | 2.74 | 3.48 |
| 355 | Government
Germany | Cluster Platform 3000 DL360G4 Xeon 3.4 GHz, Myrinet
Hewlett-Packard | 512 | 2005 | 2.74 | 3.48 |
| 356 | Sandia National Laboratories
United States | Cluster Platform 3000 DL360G4 Xeon 3.4 GHz, Myrinet
Hewlett-Packard | 512 | 2005 | 2.74 | 3.48 |
| 357 | Petroleum Company (G)
Saudia Arabia | Cluster Platform 3000 DL360G3 Xeon 3.06 GHz, GigEthernet
Hewlett-Packard | 800 | 2005 | 2.74 | 4.90 |
| 358 | Petroleum Company (G)
Saudia Arabia | Cluster Platform 3000 DL360G3 Xeon 3.06 GHz, GigEthernet
Hewlett-Packard | 800 | 2005 | 2.74 | 4.90 |
| 359 | Petroleum Company (G)
Saudia Arabia | Cluster Platform 3000 DL360G3 Xeon 3.06 GHz, GigEthernet
Hewlett-Packard | 800 | 2005 | 2.74 | 4.90 |
| 360 | Telecommunication Company
United States | Blade Cluster BL-20P, Pentium4 Xeon 3.06 GHz, Gig-Ethernet
Hewlett-Packard | 800 | 2005 | 2.74 | 4.90 |
| 361 | Telecommunication Company
United States | Blade Cluster BL-20P, Pentium4 Xeon 3.06 GHz, Gig-Ethernet
Hewlett-Packard | 800 | 2005 | 2.74 | 4.90 |
| 362 | Telecommunication Company
United States | Blade Cluster BL-20P, Pentium4 Xeon 3.06 GHz, Gig-Ethernet
Hewlett-Packard | 800 | 2005 | 2.74 | 4.90 |
| 363 | Telecommunication Company
United States | Blade Cluster BL-20P, Pentium4 Xeon 3.06 GHz, Gig-Ethernet
Hewlett-Packard | 800 | 2005 | 2.74 | 4.90 |
| 364 | Max-Planck-Gesellschaft MPI/IPP
Germany | pSeries 690 Turbo 1.3GHz
IBM | 1024 | 2004 | 2.74 | 5.32 |
| 365 | POSDATA
Korea, South | SuperDome 875 MHz/HyperPlex
Hewlett-Packard | 1472 | 2006 | 2.73 | 5.15 |
| 366 | Los Alamos National Laboratory
United States | Lightning Bolt #7 - Opteron 1.8 GHz dual core, Myrinet
Linux Networx | 1024 | 2005 | 2.73 | 3.69 |
| 367 | Trinity College Dublin
Ireland | IITAC - eServer Cluster, Opteron 2.4 GHz, Infiniband
IBM | 712 | 2005 | 2.72 | 3.41 |
| 368 | Government
United States | Cluster Platform 3000 DL360G3 Xeon 2.8 GHz GigEthernet
Hewlett-Packard | 912 | 2005 | 2.70 | 5.11 |
| 369 | Government
United Kingdom | Integrity Superdome, Itanium2 1.5 GHz, HyperPlex
Hewlett-Packard | 736 | 2006 | 2.69 | 4.42 |
| 370 | Government
United States | Cluster Platform 3000 DL360G3 Xeon 3.2 GHz Myrinet
Hewlett-Packard | 640 | 2005 | 2.69 | 4.10 |
| 371 | Purdue University
United States | Lear - PowerEdge SC1425 3.2 GHz, GigEthernet
Dell | 1024 | 2006 | 2.69 | 6.55 |
| 372 | Semiconductor Company (C)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.2 GHz - Gig-Ethernet
IBM | 680 | 2005 | 2.69 | 4.35 |
| 373 | Semiconductor Company (F)
India | xSeries x336 Cluster Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 730 | 2005 | 2.68 | 5.26 |
| 374 | PGS
Brazil | BladeCenter LS20, Opteron 2.0 GHz Dual core, GigEthernet
IBM | 1232 | 2006 | 2.67 | 4.93 |
| 375 | Bank (I)
United Kingdom | Blade Cluster BL-20P, Pentium4 Xeon 3.06 GHz
Hewlett-Packard | 760 | 2005 | 2.60 | 4.65 |
| 376 | Semiconductor Company (C)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 652 | 2005 | 2.59 | 4.69 |
| 377 | Semiconductor Company (C)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 652 | 2005 | 2.59 | 4.69 |
| 378 | Semiconductor Company (C)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 652 | 2005 | 2.59 | 4.69 |
| 379 | US Navy classified
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.2 GHz - Gig-Ethernet
IBM | 652 | 2005 | 2.59 | 4.17 |
| 380 | US Navy classified
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.2 GHz - Gig-Ethernet
IBM | 652 | 2005 | 2.59 | 4.17 |
| 381 | US Navy classified
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.2 GHz - Gig-Ethernet
IBM | 652 | 2005 | 2.59 | 4.17 |
| 382 | Coles Myer
Australia | Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz, GigEthernet
Hewlett-Packard | 720 | 2005 | 2.58 | 4.61 |
| 383 | Department of Employment and Workplace Relations
Australia | Blade Cluster BL-20P, Pentium4 Xeon 3.6 GHz, GigEthernet
Hewlett-Packard | 640 | 2005 | 2.58 | 4.61 |
| 384 | Department of Employment and Workplace Relations
Australia | Blade Cluster BL-20P, Pentium4 Xeon 3.6 GHz, GigEthernet
Hewlett-Packard | 640 | 2005 | 2.58 | 4.61 |
| 385 | Environment Canada
Canada | pSeries 690 Turbo 1.3GHz
IBM | 960 | 2004 | 2.56 | 4.99 |
| 386 | Energy Company (D)
United States | Cluster Platform 6000 rx5670-4x256, Itanium2 1.3 GHz, GigE
Hewlett-Packard | 1024 | 2003 | 2.56 | 5.32 |
| 387 | Semiconductor Company (D)
Israel | xSeries x336 Cluster Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 694 | 2005 | 2.54 | 5.00 |
| 388 | Semiconductor Company (D)
Israel | xSeries x336 Cluster Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 694 | 2005 | 2.54 | 5.00 |
| 389 | Semiconductor Company (C)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.2 GHz - Gig-Ethernet
IBM | 636 | 2005 | 2.54 | 4.07 |
| 390 | Semiconductor Company (D)
Israel | xSeries x336 Cluster Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 692 | 2005 | 2.54 | 4.98 |
| 391 | Semiconductor Company (D)
Israel | xSeries x336 Cluster Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 692 | 2005 | 2.54 | 4.98 |
| 392 | Semiconductor Company (D)
Israel | xSeries x336 Cluster Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 692 | 2005 | 2.54 | 4.98 |
| 393 | Sinopec
China | BladeCenter HS20 Cluster, Xeon EM64T 3.4 GHz - Gig-Ethernet
IBM | 692 | 2005 | 2.54 | 4.71 |
| 394 | Sinopec
China | BladeCenter HS20 Cluster, Xeon EM64T 3.4 GHz - Gig-Ethernet
IBM | 692 | 2005 | 2.54 | 4.71 |
| 395 | Semiconductor Company (D)
Israel | BladeCenter HS20 Cluster, Xeon EM64T 3.2 GHz - Gig-Ethernet
IBM | 634 | 2005 | 2.53 | 4.06 |
| 396 | Semiconductor Company (D)
Israel | xSeries x336 Cluster, Xeon EM64T 3.2 GHz, GigEthernet
IBM | 634 | 2005 | 2.53 | 4.06 |
| 397 | PGS
Australia | xSeries Xeon 3.06 GHz - Gig-Ethernet
IBM | 672 | 2005 | 2.52 | 4.11 |
| 398 | University of Chicago
United States | eServer 326 Cluster, Opteron Dual Core 2.2 GHz, GigEthernet
IBM | 1024 | 2006 | 2.52 | 4.51 |
| 399 | University of Alaska - ARSC
United States | eServer pSeries 655 (1.5 GHz Power4+)
IBM | 672 | 2004 | 2.51 | 4.03 |
| 400 | Semiconductor Company (C)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 628 | 2005 | 2.51 | 4.52 |
| 401 | Financial Institution (H)
Australia | Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz, GigEthernet
Hewlett-Packard | 700 | 2005 | 2.50 | 4.48 |
| 402 | Financial Institution (H)
Australia | Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz, GigEthernet
Hewlett-Packard | 700 | 2005 | 2.50 | 4.48 |
| 403 | Semiconductor Company (C)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 616 | 2005 | 2.46 | 4.44 |
| 404 | Semiconductor Company (C)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 616 | 2005 | 2.46 | 4.44 |
| 405 | Semiconductor Company (C)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 616 | 2005 | 2.46 | 4.44 |
| 406 | Semiconductor Company (C)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 616 | 2005 | 2.46 | 4.44 |
| 407 | Semiconductor Company (C)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 616 | 2005 | 2.46 | 4.44 |
| 408 | Semiconductor Company (C)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 616 | 2005 | 2.46 | 4.44 |
| 409 | Semiconductor Company (C)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 616 | 2005 | 2.46 | 4.44 |
| 410 | Semiconductor Company (C)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 616 | 2005 | 2.46 | 4.44 |
| 411 | Semiconductor Company (C)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 616 | 2005 | 2.46 | 4.44 |
| 412 | Cedars-Sinai
United States | Fire x2100 Cluster, Opteron 2.2 GHz dual core, Gig Ethernet
Sun Microsystems | 800 | 2006 | 2.46 | 3.52 |
| 413 | Hewlett-Packard
United States | Integrity Superdome, Itanium2 1.5 GHz, HyperPlex
Hewlett-Packard | 512 | 2006 | 2.44 | 3.07 |
| 414 | Hewlett-Packard
United States | Integrity Superdome, Itanium2 1.5 GHz, HyperPlex
Hewlett-Packard | 512 | 2006 | 2.44 | 3.07 |
| 415 | Hewlett-Packard
United States | Integrity Superdome, Itanium2 1.5 GHz, HyperPlex
Hewlett-Packard | 512 | 2006 | 2.44 | 3.07 |
| 416 | Hewlett-Packard
United States | Integrity Superdome, Itanium2 1.5 GHz, HyperPlex
Hewlett-Packard | 512 | 2006 | 2.44 | 3.07 |
| 417 | Hewlett-Packard
United States | Integrity Superdome, Itanium2 1.5 GHz, HyperPlex
Hewlett-Packard | 512 | 2006 | 2.44 | 3.07 |
| 418 | Hewlett-Packard
United States | Integrity Superdome, Itanium2 1.5 GHz, HyperPlex
Hewlett-Packard | 512 | 2006 | 2.44 | 3.07 |
| 419 | Hewlett-Packard
United States | Integrity Superdome, Itanium2 1.5 GHz, HyperPlex
Hewlett-Packard | 512 | 2006 | 2.44 | 3.07 |
| 420 | Amdocs
United States | SuperDome 1.1 GHz/HyperPlex
Hewlett-Packard | 1024 | 2006 | 2.43 | 4.51 |
| 421 | Amdocs
United States | SuperDome 1.1 GHz/HyperPlex
Hewlett-Packard | 1024 | 2006 | 2.43 | 4.51 |
| 422 | Beijing Founder Century Information Systems Co.
China | SuperDome 1.1 GHz/HyperPlex
Hewlett-Packard | 1024 | 2006 | 2.43 | 4.51 |
| 423 | Digital China Ltd.
China | SuperDome 1.1 GHz/HyperPlex
Hewlett-Packard | 1024 | 2006 | 2.43 | 4.51 |
| 424 | SBM Gates Arrow Com.
United States | SuperDome 1.1 GHz/HyperPlex
Hewlett-Packard | 1024 | 2006 | 2.43 | 4.51 |
| 425 | SBM Gates Arrow Com.
United States | SuperDome 1.1 GHz/HyperPlex
Hewlett-Packard | 1024 | 2006 | 2.43 | 4.51 |
| 426 | SBM Gates Arrow Com.
United States | SuperDome 1.1 GHz/HyperPlex
Hewlett-Packard | 1024 | 2006 | 2.43 | 4.51 |
| 427 | French Industries
France | eServer, Opteron 2.6 GHz, GigEthernet
IBM | 798 | 2005 | 2.42 | 4.15 |
| 428 | Wellpoint
United States | Blade Cluster BL-20P, Pentium4 Xeon 3.6 GHz, GigEthernet
Hewlett-Packard | 600 | 2005 | 2.41 | 4.32 |
| 429 | Energy Company (E)
China | Blade Cluster BL-20P, Pentium4 Xeon 3.4 GHz, GigEthernet
Hewlett-Packard | 656 | 2006 | 2.41 | 4.46 |
| 430 | Energy Company (E)
China | Blade Cluster BL-20P, Pentium4 Xeon 3.4 GHz, GigEthernet
Hewlett-Packard | 656 | 2006 | 2.41 | 4.46 |
| 431 | The Wellcome Trust Sanger Institute
United Kingdom | BladeCenter HS20 Cluster, Xeon EM64T 3.2 GHz - Gig-Ethernet
IBM | 600 | 2005 | 2.40 | 3.84 |
| 432 | Financial Institution (J)
United Kingdom | Blade Cluster BL-25P, Opteron 2.4 GHz, GigEthernet
Hewlett-Packard | 896 | 2005 | 2.40 | 4.30 |
| 433 | Financial Institution (J)
United Kingdom | Blade Cluster BL-25P, Opteron 2.4 GHz, GigEthernet
Hewlett-Packard | 896 | 2005 | 2.40 | 4.30 |
| 434 | Digital Media Company (C)
United Kingdom | xSeries Xeon 3.06 GHz - Gig-E
IBM | 640 | 2004 | 2.40 | 3.92 |
| 435 | Defense Classified
United States | Cluster Platform 3000 DL360 Xeon 2.8 GHz GigEthernet
Hewlett-Packard | 840 | 2005 | 2.40 | 4.70 |
| 436 | SARA (Stichting Academisch Rekencentrum)
Netherlands | Lisa - PowerEdge 1850, 3.4 GHz, Infiniband
Dell | 544 | 2005 | 2.37 | 3.74 |
| 437 | Rice University
United States | Cray XD1, 2.2 GHz
Cray Inc. | 668 | 2005 | 2.35 | 2.94 |
| 438 | CSAR at the University of Manchester
United Kingdom | SGI Altix 1.3 GHz
SGI | 512 | 2005 | 2.34 | 2.66 |
| 439 | Bank (K)
Belgium | Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz, GigEthernet
Hewlett-Packard | 650 | 2005 | 2.33 | 4.16 |
| 440 | Bank (K)
Belgium | Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz, GigEthernet
Hewlett-Packard | 650 | 2005 | 2.33 | 4.16 |
| 441 | Sinopec
China | BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 576 | 2005 | 2.31 | 4.15 |
| 442 | Oak Ridge National Laboratory
United States | pSeries 690 Turbo 1.3GHz
IBM | 864 | 2002 | 2.31 | 4.49 |
| 443 | Automotive Manufacturer (F)
Italy | eServer, Opteron 2.0 GHz, Myrinet
IBM | 768 | 2005 | 2.31 | 3.07 |
| 444 | Brookhaven National Laboratory
United States | IBM QCDOC, PowerPC 440, 400 MHz, 6D-Torus
IBM | 4096 | 2006 | 2.28 | 3.28 |
| 445 | Sandia National Laboratories
United States | xSeries Xeon 3.06 GHz, Myrinet
IBM | 512 | 2004 | 2.27 | 3.13 |
| 446 | Beijing Founder Century Information Systems Co.
China | SuperDome 1 GHz/HyperPlex
Hewlett-Packard | 1024 | 2006 | 2.21 | 4.10 |
| 447 | Digital China Ltd.
China | SuperDome 1 GHz/HyperPlex
Hewlett-Packard | 1024 | 2006 | 2.21 | 4.10 |
| 448 | Digital China Ltd.
China | SuperDome 1 GHz/HyperPlex
Hewlett-Packard | 1024 | 2006 | 2.21 | 4.10 |
| 449 | Digital China Ltd.
China | SuperDome 1 GHz/HyperPlex
Hewlett-Packard | 1024 | 2006 | 2.21 | 4.10 |
| 450 | Sandia National Laboratories
United States | Red RoSE Cluster - Precision 470 Cluster, 3.6 GHz, Infiniband
Dell | 592 | 2005 | 2.21 | 4.26 |
| 451 | Louisiana State University
United States | SuperMike - P4 Xeon 1.8 GHz - Myrinet
Atipa Technology | 1024 | 2002 | 2.21 | 3.69 |
| 452 | Fermi National Accelerator Laboratory
United States | Pion - Intel Pentium 4 Cluster, 3.2 GHz, Infiniband
Self-made | 506 | 2006 | 2.21 | 3.24 |
| 453 | Datacentrix (Pty) Limited
South Africa | SuperDome 1.1 GHz/HyperPlex
Hewlett-Packard | 928 | 2006 | 2.20 | 4.08 |
| 454 | Los Alamos National Laboratory
United States | Flash - Opteron 2 GHz, Myrinet
Linux Networx | 764 | 2005 | 2.18 | 3.06 |
| 455 | Intel
United States | Intel Cluster, Xeon 3.2 GHz dual core, Infiniband
Intel | 480 | 2005 | 2.18 | 3.07 |
| 456 | Government
United States | Cray XT3, 2.4 GHz
Cray Inc. | 544 | 2005 | 2.17 | 2.61 |
| 457 | NASA/Goddard Space Flight Center
United States | AlphaServer SC45, 1 GHz
Hewlett-Packard | 1392 | 2002 | 2.16 | 2.78 |
| 458 | Semiconductor Company (C)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.2 GHz - Gig-Ethernet
IBM | 534 | 2005 | 2.16 | 3.42 |
| 459 | Meteorological Research Institute/JMA
Japan | SX-6/248M31 (typeE, 1.778ns)
NEC | 248 | 2004 | 2.15 | 2.23 |
| 460 | Texas Advanced Computing Center/Univ. of Texas
United States | Wrangler 2 - PowerEdge 1855, 3.2 GHz, Infiniband
Dell | 400 | 2005 | 2.14 | 2.56 |
| 461 | US Army Research Laboratory (ARL)
United States | pSeries 690 Turbo 1.3GHz
IBM | 800 | 2002 | 2.14 | 4.16 |
| 462 | University of California, Los Angeles
United States | Dawson - Apple XServe, 2.0/2.3 GHz, GigEthenet
Self-made | 512 | 2005 | 2.13 | 4.40 |
| 463 | Sony Pictures Imageworks
United States | xSeries Cluster Xeon 3.06 GHz - Gig-E
IBM | 568 | 2003 | 2.13 | 3.48 |
| 464 | CILEA
Italy | Michelangelo - Xeon 3.06 GHz, Opteron 2.2 GHz, Myrinet, Infiniband, VMI
Exadron | 756 | 2006 | 2.13 | 3.77 |
| 465 | NERSC/LBNL
United States | Jacquard - Opteron 2.2 GHz, Infiniband
Linux Networx | 630 | 2005 | 2.13 | 2.77 |
| 466 | IBM Poughkeepsie Benchmarking Center
United States | eServer pSeries p5 575 1.9 GHz
IBM | 320 | 2005 | 2.12 | 2.43 |
| 467 | Atomic Weapons Establishment
United Kingdom | SP Power3 375 MHz 16 way
IBM | 1920 | 2002 | 2.11 | 2.88 |
| 468 | Bowie State University
United States | Xseed - XServe G5 2GHz, Myrinet
Apple | 448 | 2005 | 2.10 | 3.58 |
| 469 | Avaya
United States | Cluster Platform 3000 DL380 Xeon 3.2 GHz Myrinet
Hewlett-Packard | 466 | 2005 | 2.10 | 2.98 |
| 470 | Cornell Theory Center
United States | PowerEdge 1855, 3.6 GHz, GigEthernet, Windows
Dell | 660 | 2005 | 2.09 | 4.75 |
| 471 | Universitaet Wuppertal
Germany | ALiCEnext, Opteron 1.8 GHz, GigE, Parastation
Angstrom Microsystems | 1024 | 2004 | 2.08 | 3.69 |
| 472 | Grid Technology Research Center, AIST
Japan | AIST Super Cluster M-64 - AIST Super Cluster M-64, Itanium2 1.3 GHz, Myrinet
IBM | 512 | 2004 | 2.08 | 2.66 |
| 473 | Geoscience (E)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 512 | 2005 | 2.08 | 3.69 |
| 474 | Geoscience (E)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 512 | 2005 | 2.08 | 3.69 |
| 475 | Geoscience (E)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 512 | 2005 | 2.08 | 3.69 |
| 476 | Geoscience (E)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 512 | 2005 | 2.08 | 3.69 |
| 477 | Geoscience (E)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 512 | 2005 | 2.08 | 3.69 |
| 478 | Geoscience (E)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 512 | 2005 | 2.08 | 3.69 |
| 479 | Geoscience (E)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 512 | 2005 | 2.08 | 3.69 |
| 480 | Geoscience (E)
United States | BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 512 | 2005 | 2.08 | 3.69 |
| 481 | Petroleum Company (H)
China | BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 512 | 2005 | 2.08 | 3.69 |
| 482 | WETA Digital
New Zealand | BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM | 512 | 2005 | 2.08 | 3.69 |
| 483 | AMD Developer Center
United States | Emerald - Rackable Foundation C1000, Opteron Dual-Core 2.2GHz, InfiniPath
Rackable Systems | 576 | 2005 | 2.07 | 2.53 |
| 484 | Semiconductor Company (C)
United States | xSeries Xeon 3.06 GHz - Gig-E
IBM | 550 | 2004 | 2.07 | 3.37 |
| 485 | Energy Company (D)
United States | Cluster Platform 6000 rx4640-4x136 Itanium2 1.3 GHz, GigE
Hewlett-Packard | 800 | 2004 | 2.06 | 4.16 |
| 486 | Universitaet Aachen/RWTH
Germany | Sun Fire 25K/6900 Cluster
Sun Microsystems | 672 | 2005 | 2.05 | 3.05 |
| 487 | Technische Universitaet Darmstadt
Germany | eServer pSeries p5 575 1.9 GHz, GigEth
IBM | 480 | 2005 | 2.05 | 3.65 |
| 488 | Arizona State University High Performance Computing Center
United States | Saguaro - PowerEdge 1855, 3.2 GHz, Infiniband
Dell | 400 | 2005 | 2.05 | 2.56 |
| 489 | Oracle Corporation
United States | Cluster Platform 3000 DL380G3, Pentium4 Xeon 2.8 GHz, Myrinet
Hewlett-Packard | 702 | 2004 | 2.04 | 3.93 |
| 490 | United Institute of Informatics Problems
Belarus | SKIF K-1000 - Opteron 2.2 GHz, Infiniband
Self-made | 576 | 2004 | 2.03 | 2.53 |
| 491 | National Center for High Performance Computing
Taiwan | Cluster Platform 6000 rx2600 Itanium2 1.5 GHz, Quadrics
Hewlett-Packard | 384 | 2004 | 2.03 | 2.30 |
| 492 | Geoscience (C)
United Kingdom | xSeries Xeon 2.8 GHz, Gig-Ethernet
IBM | 2256 | 2004 | 2.03 | 12.63 |
| 493 | Credit Suisse
Switzerland | BladeCenter HS20 Xeon 2.8 GHz, Gig-Ethernet
IBM | 1500 | 2004 | 2.03 | 8.40 |
| 494 | WETA Digital
New Zealand | BladeCenter Cluster Xeon 2.8 GHz, Gig-Ethernet
IBM | 1176 | 2003 | 2.03 | 6.59 |
| 495 | Semiconductor Company (C)
United States | xSeries Xeon 2.8 GHz, Gig-Ethernet
IBM | 1140 | 2003 | 2.03 | 6.38 |
| 496 | Semiconductor Company (C)
United States | xSeries Xeon 2.8 GHz, Gig-Ethernet
IBM | 1140 | 2003 | 2.03 | 6.38 |
| 497 | WETA Digital
New Zealand | BladeCenter Cluster Xeon 2.8 GHz, Gig-Ethernet
IBM | 1080 | 2003 | 2.03 | 6.05 |
| 498 | Semiconductor Company (C)
United States | xSeries Xeon 2.8 GHz, Gig-Ethernet
IBM | 1030 | 2003 | 2.03 | 5.77 |
| 499 | Semiconductor Company (C)
United States | xSeries Xeon 2.8 GHz, Gig-Ethernet
IBM | 1028 | 2003 | 2.03 | 5.76 |
| 500 | Semiconductor Company (C)
United States | xSeries Xeon 2.8 GHz, Gig-Ethernet
IBM | 1028 | 2003 | 2.03 | 5.76 |
