| Rank | Site | Computer | Cores | Year | Rmax | Rpeak | | 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 |