| Rank | Site | Computer | Cores | Year | Rmax | Rpeak | | 101 | Japan Meteorological Agency Japan | SR8000-E1/80 Hitachi | 80 | 2000 | 691.3 | 768 |
| 102 | Los Alamos National Laboratory/ACL United States | ORIGIN 2000 250 MHz SGI | 2048 | 1999 | 690.9 | 1024 |
| 103 | ERDC MSRC United States | AlphaServer SC40, 833 MHz Hewlett-Packard | 512 | 2002 | 690.9 | 853 |
| 104 | Compagnie Generale de Geophysique (CGG) United Kingdom | xSeries Cluster Xeon 2.4 GHz - Myrinet IBM | 320 | 2003 | 682.6 | 1536 |
| 105 | Brigham Young University United States | xSeries Cluster Xeon 2.4 GHz - Myrinet IBM | 256 | 2003 | 682.6 | 1228.8 |
| 106 | South Australian Partnership for Advanced Computing (SAPAC) Australia | xSeries Cluster Xeon 2.4 GHz - Myrinet IBM | 256 | 2003 | 682.6 | 1228.8 |
| 107 | American Museum of Natural History United States | Demeter - P4 Xeon 2.6 Ghz - Myrinet Linux Labs | 240 | 2003 | 680.3 | 1248 |
| 108 | Altria Group - Philip Morris Management United States | pSeries 690 Turbo 1.3GHz IBM | 240 | 2002 | 680 | 1248 |
| 109 | COLSA United States | pSeries 690 Turbo 1.3GHz IBM | 240 | 2002 | 680 | 1248 |
| 110 | US Department of the Treasury United States | pSeries 690 Turbo 1.3GHz IBM | 240 | 2002 | 680 | 1248 |
| 111 | NCSA United States | Titan Cluster Itanium 800 MHz IBM | 320 | 2001 | 677.9 | 1024 |
| 112 | Cray Inc. United States | Cray X1 Cray Inc. | 60 | 2003 | 675.5 | 768 |
| 113 | Cray Inc. United States | Cray X1 Cray Inc. | 60 | 2003 | 675.5 | 768 |
| 114 | Government United States | Cray X1 Cray Inc. | 60 | 2003 | 675.5 | 768 |
| 115 | Government United States | Cray X1 Cray Inc. | 60 | 2003 | 675.5 | 768 |
| 116 | US Army HPC Research Center at NCS United States | Cray X1 Cray Inc. | 60 | 2003 | 675.5 | 768 |
| 117 | US Army HPC Research Center at NCS United States | Cray X1 Cray Inc. | 60 | 2003 | 675.5 | 768 |
| 118 | University of Alaska - ARSC United States | Cray X1 Cray Inc. | 60 | 2003 | 675.5 | 768 |
| 119 | Fermi National Accelerator Laboratory United States | P4 Xeon Cluster 2.4 GHz - Myrinet Self-made | 256 | 2003 | 671.3 | 1228.8 |
| 120 | CSAR at the University of Manchester United Kingdom | T3E1200 Cray Inc. | 812 | 2000 | 671 | 974.4 |
| 121 | Fraunhofer Institut, Ernst-Mach Institute Germany | xSeries Cluster Xeon 2.0 GHz - Myrinet IBM | 256 | 2003 | 654.7 | 1024 |
| 122 | CBRC - Tsukuba Advanced Computing Center - TACC/AIST Japan | Magi Cluster PIII 933 MHz NEC | 1040 | 2001 | 654 | 970 |
| 123 | Boeing - Rocketdyne Power and Propulsion United States | PowerEdge 2650 Cluster P4 Xeon 2.4 GHz - GigE Dell | 264 | 2003 | 650 | 1267.2 |
| 124 | Victorian Partnership for Advanced Computing (VPAC) Australia | xSeries Cluster Xeon 2.8 GHz - Myrinet IBM | 192 | 2003 | 629.7 | 1075 |
| 125 | Semiconductor Company (F) India | xSeries Cluster Xeon 2.4 GHz - Gig-E IBM | 574 | 2003 | 626.1 | 2755.2 |
| 126 | Institute of High Performance Computing (IHPC) Singapore | pSeries 690 Turbo 1.3GHz IBM | 224 | 2002 | 623.9 | 1164.8 |
| 127 | Manufacturer (G) United States | pSeries 690 Turbo 1.3GHz IBM | 224 | 2002 | 623.9 | 1164.8 |
| 128 | IBM United States | pSeries 690 1.1GHz IBM | 256 | 2003 | 623 | 1126.4 |
| 129 | University of Utah United States | PowerEdge 2650 Cluster P4 Xeon 2.4 GHz - GigE Dell | 256 | 2002 | 618.3 | 1228.8 |
| 130 | Real World Computing (RWCP)/Tsukuba Research Center Japan | SCore IIIe/PIII 933 MHz Self-made | 1024 | 2001 | 618.3 | 955.4 |
| 131 | Meteorological Service of Canada (MSC) Canada | SX-6/80M10 NEC | 80 | 2002 | 616.9 | 640 |
| 132 | Petroleum Company (G) Saudia Arabia | xSeries Cluster Xeon 2.4 GHz - Gig-E IBM | 562 | 2003 | 609.4 | 2697.6 |
| 133 | University of Oklahoma United States | P4 Xeon Cluster 2 GHz - Myrinet Aspen Systems Inc. | 270 | 2002 | 606.9 | 1080 |
| 134 | NCSA United States | Netfinity Cluster PIII 1 GHz - Myrinet IBM | 1024 | 2001 | 594 | 1024 |
| 135 | Wachovia Corporation United States | pSeries 690 Turbo 1.3GHz IBM | 208 | 2002 | 591 | 1081.6 |
| 136 | CNRS/IDRIS France | pSeries 690 Turbo 1.3 GHz, GigEth IBM | 256 | 2002 | 590.2 | 1331.2 |
| 137 | Postbank Germany | pSeries 690 Turbo 1.3 GHz, GigEth IBM | 256 | 2002 | 590.2 | 1331.2 |
| 138 | Sprint PCS United States | SP Power3 375 MHz 16 way IBM | 528 | 2002 | 579 | 792 |
| 139 | University of Tokyo/Institute for Solid State Physics Japan | SR8000-F1/60 Hitachi | 60 | 2000 | 577 | 720 |
| 140 | Naval Research Laboratory (NRL) United States | 1200X P4 Xeon 2.2 GHz - Myrinet Appro International | 256 | 2002 | 575 | 1126.4 |
| 141 | PIK Germany | pSeries 655 1.1GHz IBM | 240 | 2003 | 574.9 | 1056 |
| 142 | Telecom Italia Italy | pSeries 690 Turbo 1.3GHz IBM | 200 | 2002 | 574 | 1040 |
| 143 | University of Zurich - Institute for Theoretical Physics Switzerland | zBox, AMD AthlonMP 1.8 GHz - SCI 2D Self-made | 288 | 2003 | 570.1 | 1036.8 |
| 144 | IBM Thomas J. Watson Research Center United States | SP Power3 375 MHz 16 way IBM | 520 | 2002 | 570 | 780 |
| 145 | Japan Atomic Energy Research Institute Japan | VPP5000/64 Fujitsu | 64 | 2001 | 563 | 614.4 |
| 146 | Kyushu University Japan | VPP5000/64 Fujitsu | 64 | 2000 | 563 | 614.4 |
| 147 | Meteo-France France | VPP5000/64 Fujitsu | 64 | 2003 | 563 | 614.4 |
| 148 | Petroleum Company (G) Saudia Arabia | SP Power3 375 MHz 16 way IBM | 512 | 2001 | 561 | 768 |
| 149 | US Army Research Laboratory (ARL) United States | SP Power3 375 MHz 16 way IBM | 512 | 2000 | 561 | 768 |
| 150 | ID-IMAG / INRIA Rhone-Alpes France | Cluster Platform 6000 rx2600 Itanium2 900 MHz Cluster - Myrinet Hewlett-Packard | 208 | 2003 | 561 | 748.8 |
| 151 | EDS/ Adam Opel AG Germany | pSeries 690 Turbo 1.3GHz IBM | 192 | 2002 | 558.2 | 998.4 |
| 152 | Deutsche Telekom AG Germany | SP Power3 375 MHz IBM | 528 | 2000 | 553 | 792 |
| 153 | Wright-Patterson Air Force Base/DoD ASC United States | SP Power3 375 MHz IBM | 528 | 2000 | 553 | 792 |
| 154 | ERDC MSRC United States | ORIGIN 3000 700 MHz SGI | 512 | 2003 | 553 | 716.8 |
| 155 | ERDC MSRC United States | ORIGIN 3000 700 MHz SGI | 512 | 2003 | 553 | 716.8 |
| 156 | Wright-Patterson Air Force Base/DoD ASC United States | ORIGIN 3000 700 MHz SGI | 512 | 2003 | 553 | 716.8 |
| 157 | Wright-Patterson Air Force Base/DoD ASC United States | ORIGIN 3000 700 MHz SGI | 512 | 2003 | 553 | 716.8 |
| 158 | Wright-Patterson Air Force Base/DoD ASC United States | ORIGIN 3000 700 MHz SGI | 512 | 2003 | 553 | 716.8 |
| 159 | United Kingdom Meteorological Office United Kingdom | T3E900 Cray Inc. | 876 | 1997 | 552 | 788.4 |
| 160 | Petroleum Company (A) United States | xSeries Cluster Xeon 2.4 GHz - Gig-E IBM | 520 | 2003 | 551.2 | 2496 |
| 161 | University of Michigan, Center for Advanced Computing United States | AMD AthlonMP Cluster 1.667 GHz - Myrinet Atipa Technology | 256 | 2003 | 550 | 853.5 |
| 162 | State Farm United States | SP Power3 375 MHz IBM | 520 | 2001 | 546 | 780 |
| 163 | Compagnie Generale de Geophysique (CGG) Malaysia | xSeries Cluster Xeon 2.4 GHz - Gig-E IBM | 512 | 2003 | 540.2 | 2457.6 |
| 164 | Lockheed Martin United States | xSeries Cluster Xeon 2.4 GHz - Gig-E IBM | 512 | 2003 | 540.2 | 2457.6 |
| 165 | Wright-Patterson Air Force Base/DoD ASC United States | AlphaServer SC45, 1 GHz Hewlett-Packard | 324 | 2002 | 540 | 648 |
| 166 | Los Alamos National Laboratory United States | ASCI Q - AlphaServer SC45, 1.25 GHz Hewlett-Packard | 256 | 2002 | 538.4 | 640 |
| 167 | Pharmaceutical Company Germany | SP Power3 375 MHz IBM | 510 | 2001 | 536 | 765 |
| 168 | Indiana University United States | SP Power3 375 MHz IBM | 508 | 2001 | 534 | 762 |
| 169 | Center for Development of Advanced Computing (C-DAC) India | PARAM Padma Cluster - pSeries 630 1.0GHz - PARAMNet C-DAC | 248 | 2003 | 532 | 992 |
| 170 | Amdocs United States | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 256 | 2003 | 530.5 | 896 |
| 171 | IT Telecom S.P.A. Italy | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 256 | 2003 | 530.5 | 896 |
| 172 | OverWrite United Kingdom | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 256 | 2002 | 530.5 | 896 |
| 173 | OverWrite Germany | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 256 | 2003 | 530.5 | 896 |
| 174 | POSDATA Korea, South | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 256 | 2003 | 530.5 | 896 |
| 175 | Telecommunication Company United States | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 256 | 2003 | 530.5 | 896 |
| 176 | SBC Service Inc United States | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 256 | 2003 | 529.6 | 896 |
| 177 | Sanpaolo Leasint SpA Italy | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 256 | 2003 | 529.6 | 896 |
| 178 | United Kingdom Meteorological Office United Kingdom | T3E1200 Cray Inc. | 636 | 1999 | 526 | 763.2 |
| 179 | Grid Technology Research Center, AIST Japan | Gfarm Cluster I - Xeon 2.8 GHz - GigE Self-made | 180 | 2003 | 520.7 | 1008 |
| 180 | VW (Volkswagen AG) Germany | Express5800 120RC-1, P4 2.8GHz Cluster - GigE NEC | 256 | 2003 | 519.8 | 1433.6 |
| 181 | Lockheed Martin United States | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 256 | 2003 | 517 | 896 |
| 182 | SAT/ISOSA Mexico | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 256 | 2003 | 517 | 896 |
| 183 | State Farm United States | SP Power3 375 MHz IBM | 488 | 2001 | 512 | 732 |
| 184 | Hewlett-Packard United States | Cluster Platform DL360G3, Pentium4 Xeon 2.8 GHz, Myrinet Hewlett-Packard | 128 | 2003 | 511 | 716.8 |
| 185 | Hewlett-Packard United States | AlphaServer SC ES40/EV67 Hewlett-Packard | 512 | 2000 | 507.6 | 682.66 |
| 186 | Lawrence Livermore National Laboratory United States | AlphaServer SC ES40/EV67 Hewlett-Packard | 512 | 2000 | 507.6 | 682.66 |
| 187 | University of Toronto Canada | xSeries Cluster Xeon 2.4 GHz - Gig-E IBM | 448 | 2003 | 505.7 | 2150.4 |
| 188 | Universitaet Wien Austria | P4 Cluster 2.53 GHz - GigE init.at | 192 | 2003 | 504.3 | 971 |
| 189 | Danish Meteorological Institute Denmark | SX-6/64M8 NEC | 64 | 2003 | 495.2 | 512 |
| 190 | National Aerospace Laboratory of Japan Japan | SX-6/64M8 NEC | 64 | 2002 | 495.2 | 512 |
| 191 | National Institute for Environmental Studies Japan | SX-6/64M8 NEC | 64 | 2002 | 495.2 | 512 |
| 192 | Centre Informatique National (CINES) France | SP Power3 375 MHz IBM | 472 | 2001 | 494 | 708 |
| 193 | Citicorp United States | pSeries 690 Turbo 1.3GHz GigEth IBM | 200 | 2002 | 493 | 1040 |
| 194 | Nagoya University Japan | VPP5000/56 Fujitsu | 56 | 1999 | 492 | 537.6 |
| 195 | Lawrence Livermore National Laboratory United States | SP Power3 375 MHz 16 way IBM | 448 | 2001 | 491 | 672 |
| 196 | KTH - Royal Institute of Technology Sweden | Cluster Platform 6000 rx2600 Itanium2 900 MHz Cluster - Myrinet Hewlett-Packard | 180 | 2003 | 489 | 648 |
| 197 | Rice University United States | Cluster Platform 6000 zx6000 Itanium2 900 MHz, Myrinet Hewlett-Packard | 174 | 2003 | 487.2 | 626.4 |
| 198 | University of Nebraska United States | Prairiefire AMD 1.8 GHz - Myrinet Atipa Technology | 256 | 2003 | 483.4 | 920.6 |
| 199 | Hitachi IPD Jigyobu (SP-OEM) Japan | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 224 | 2003 | 482.3 | 784 |
| 200 | Kyoto University Japan | VPP800/63 Fujitsu | 63 | 1999 | 482 | 504 |
| 201 | Umea University / HPC2N Sweden | AMD 1.66 GHz - SCI 3D-torus Self-made | 240 | 2002 | 481 | 800 |
| 202 | Centrica Plc United Kingdom | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 224 | 2002 | 479.5 | 784 |
| 203 | Universitaet Stuttgart, ITB Germany | BioCORTEX AMD 1.533 GHz - Myrinet Self-made | 256 | 2003 | 478.4 | 784.9 |
| 204 | Petroleum Company (B) United States | xSeries Cluster Xeon 2.4 GHz - Gig-E IBM | 392 | 2003 | 475.6 | 1881.6 |
| 205 | IN2P3 France | xSeries Cluster Xeon 2.4 GHz - Gig-E IBM | 384 | 2003 | 471.3 | 1843.2 |
| 206 | PDO Oman | xSeries Cluster Xeon 2.4 GHz - Gig-E IBM | 384 | 2003 | 471.3 | 1843.2 |
| 207 | Hewlett-Packard United States | SuperDome 750 MHz/HyperFabric Hewlett-Packard | 256 | 2002 | 470.9 | 768 |
| 208 | Lawrence Livermore National Laboratory United States | ASCI Blue-Pacific CTR, IBM SP 604e IBM | 1344 | 1998 | 468.2 | 892.4 |
| 209 | Cambridge University United Kingdom | Fire 15K 1.05 GHz Sun Microsystems | 300 | 2002 | 468.1 | 630 |
| 210 | Cambridge University United Kingdom | Fire 15K 1.05 GHz Sun Microsystems | 300 | 2002 | 468.1 | 630 |
| 211 | Cambridge University United Kingdom | Fire 15K 1.05 GHz Sun Microsystems | 300 | 2002 | 468.1 | 630 |
| 212 | IKON United States | pSeries 690 Turbo 1.3GHz IBM | 160 | 2002 | 468 | 832 |
| 213 | Government United States | ORIGIN 3000 600 MHz SGI | 512 | 2002 | 466 | 614.4 |
| 214 | Government United States | ORIGIN 3000 600 MHz SGI | 512 | 2002 | 466 | 614.4 |
| 215 | Government United States | ORIGIN 3000 600 MHz SGI | 512 | 2002 | 466 | 614.4 |
| 216 | Government United States | ORIGIN 3000 600 MHz SGI | 512 | 2002 | 466 | 614.4 |
| 217 | NOAA/Geophysical Fluid Dynamics Laboratory (GFDL) United States | ORIGIN 3000 600 MHz SGI | 512 | 2001 | 466 | 614.4 |
| 218 | NOAA/Geophysical Fluid Dynamics Laboratory (GFDL) United States | ORIGIN 3000 600 MHz SGI | 512 | 2003 | 466 | 614.4 |
| 219 | NOAA/Geophysical Fluid Dynamics Laboratory (GFDL) United States | ORIGIN 3000 600 MHz SGI | 512 | 2001 | 466 | 614.4 |
| 220 | NOAA/Geophysical Fluid Dynamics Laboratory (GFDL) United States | ORIGIN 3000 600 MHz SGI | 512 | 2003 | 466 | 614.4 |
| 221 | Norwegian University of Science and Technology Norway | ORIGIN 3000 600 MHz SGI | 512 | 2002 | 466 | 614.4 |
| 222 | IBM United States | xSeries Cluster Xeon 2.8 GHz - Myrinet IBM | 128 | 2003 | 450 | 716.8 |
| 223 | BMW AG Germany | SuperDome 750 MHz/HyperPlex Hewlett-Packard | 256 | 2002 | 449.4 | 768 |
| 224 | Centrica Plc United Kingdom | SuperDome 750 MHz/HyperPlex Hewlett-Packard | 256 | 2002 | 449.4 | 768 |
| 225 | Hewlett-Packard United States | SuperDome 750 MHz/HyperPlex Hewlett-Packard | 256 | 2002 | 449.4 | 768 |
| 226 | Tsukuba Advanced Computing Center - TACC/AIST Japan | SR8000/64 Hitachi | 64 | 1999 | 449 | 512 |
| 227 | Forschungszentrum Juelich (FZJ) Germany | T3E1200 Cray Inc. | 540 | 1999 | 447 | 648 |
| 228 | Government United States | T3E1200 Cray Inc. | 540 | 2001 | 447 | 648 |
| 229 | Government United States | T3E1200 Cray Inc. | 540 | 1998 | 447 | 648 |
| 230 | Government United States | T3E1200 Cray Inc. | 540 | 1999 | 447 | 648 |
| 231 | Compagnie Generale de Geophysique (CGG) Malaysia | xSeries Cluster Xeon 2.4 GHz - Gig-E IBM | 332 | 2003 | 443.3 | 1593.6 |
| 232 | Financial Institution Hong Kong | SP Power3 375 MHz IBM | 424 | 2000 | 441 | 636 |
| 233 | Government United Kingdom | SuperDome 750 MHz/HyperPlex Hewlett-Packard | 256 | 2002 | 432.6 | 768 |
| 234 | Government United Kingdom | SuperDome 750 MHz/HyperPlex Hewlett-Packard | 256 | 2002 | 432.6 | 768 |
| 235 | Sprint PCS United States | SuperDome 750 MHz/HyperPlex Hewlett-Packard | 256 | 2002 | 432.6 | 768 |
| 236 | University of Kentucky United States | SuperDome 750 MHz/HyperPlex Hewlett-Packard | 224 | 2001 | 431.7 | 672 |
| 237 | Government United States | pSeries 690 Turbo 1.3GHz GigEth IBM | 176 | 2002 | 430 | 915.2 |
| 238 | Commissariat a l'Energie Atomique (CEA) France | AlphaServer SC40, 833 MHz Hewlett-Packard | 318 | 2000 | 427.4 | 529.8 |
| 239 | Scalable Systems Group, Dell Computer United States | PowerEdge 2650 Cluster P4 Xeon 2.4 GHz - Myrinet Dell | 128 | 2002 | 421.9 | 614.4 |
| 240 | AG Edwards United States | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2003 | 421 | 672 |
| 241 | BMW AG Germany | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2003 | 421 | 672 |
| 242 | BMW AG Germany | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2003 | 421 | 672 |
| 243 | BellSouth United States | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2002 | 421 | 672 |
| 244 | Energy Company (A) Italy | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2002 | 421 | 672 |
| 245 | Netsiel S.P.A. Italy | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2002 | 421 | 672 |
| 246 | Telecom Italia Italy | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2002 | 421 | 672 |
| 247 | Telecom Italia Italy | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2003 | 421 | 672 |
| 248 | Verizon SCell United States | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2002 | 421 | 672 |
| 249 | Verizon SCell United States | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2002 | 421 | 672 |
| 250 | Defense Sweden | HPC 4500 400 MHz Cluster Sun Microsystems | 896 | 1999 | 420.44 | 716.8 |
| 251 | Service Provider United States | HPC 4500 400 MHz Cluster Sun Microsystems | 896 | 2000 | 420.44 | 716.8 |
| 252 | Service Provider United States | HPC 4500 400 MHz Cluster Sun Microsystems | 896 | 2000 | 420.44 | 716.8 |
| 253 | Sun United States | HPC 4500 400 MHz Cluster Sun Microsystems | 896 | 2000 | 420.44 | 716.8 |
| 254 | Amdocs United States | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2003 | 418.1 | 672 |
| 255 | Einstein Tec. Ind. Taiwan | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2003 | 418.1 | 672 |
| 256 | Forsythe & Mcarthur United States | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2003 | 418.1 | 672 |
| 257 | Korean Bank Korea, South | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2003 | 418.1 | 672 |
| 258 | Logical Networks United States | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2003 | 418.1 | 672 |
| 259 | IT Telecom S.P.A. Italy | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2003 | 412.7 | 672 |
| 260 | Nike United States | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2003 | 412.7 | 672 |
| 261 | OverWrite United Kingdom | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2003 | 412.7 | 672 |
| 262 | Voicestream Wireless United States | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2002 | 412.7 | 672 |
| 263 | NOAA/Geophysical Fluid Dynamics Laboratory (GFDL) United States | ORIGIN 3000 600 MHz SGI | 448 | 2001 | 410.8 | 537.6 |
| 264 | AT&T Wireless United States | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2003 | 408.2 | 672 |
| 265 | Airtel Movil S.A. Spain | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2003 | 408.2 | 672 |
| 266 | Computer Design & Integra United States | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2003 | 408.2 | 672 |
| 267 | GNT Finland Oy Finland | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2003 | 408.2 | 672 |
| 268 | Johnson & Johnson United States | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2003 | 408.2 | 672 |
| 269 | NACF Korea, South | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2003 | 408.2 | 672 |
| 270 | New Zealand Dairy Board New Zealand | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2003 | 408.2 | 672 |
| 271 | Qwest United States | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2003 | 408.2 | 672 |
| 272 | Samsung CARD Korea, South | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2003 | 408.2 | 672 |
| 273 | Samsung Capital Korea, South | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2003 | 408.2 | 672 |
| 274 | Sonofon A/S Denmark | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2003 | 408.2 | 672 |
| 275 | Verizon United States | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2003 | 408.2 | 672 |
| 276 | Youngwoo Korea, South | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 192 | 2003 | 408.2 | 672 |
| 277 | Centre Informatique National (CINES) France | ORIGIN 3000 500 MHz SGI | 512 | 2002 | 405.6 | 512 |
| 278 | Fleet Numerical Meteorology and Oceanography Center United States | ORIGIN 3000 500 MHz SGI | 512 | 2001 | 405.6 | 512 |
| 279 | Government United States | ORIGIN 3000 500 MHz SGI | 512 | 2002 | 405.6 | 512 |
| 280 | Kyoto University, Institute for Chemical Research Japan | ORIGIN 3000 500 MHz SGI | 512 | 2002 | 405.6 | 512 |
| 281 | Los Alamos National Laboratory United States | ORIGIN 3000 500 MHz SGI | 512 | 2002 | 405.6 | 512 |
| 282 | Manufacturing Company United States | ORIGIN 3000 500 MHz SGI | 512 | 2002 | 405.6 | 512 |
| 283 | SARA (Stichting Academisch Rekencentrum) Netherlands | ORIGIN 3000 500 MHz SGI | 512 | 2000 | 405.6 | 512 |
| 284 | SARA (Stichting Academisch Rekencentrum) Netherlands | ORIGIN 3000 500 MHz SGI | 512 | 2000 | 405.6 | 512 |
| 285 | Petroleum Company (A) United States | xSeries Cluster Xeon 2.4 GHz - Gig-E IBM | 260 | 2003 | 404.6 | 1248 |
| 286 | Government United States | Cray X1 Cray Inc. | 36 | 2003 | 404.3 | 460.8 |
| 287 | Government Canada | Cray X1 Cray Inc. | 36 | 2003 | 404.3 | 460.8 |
| 288 | MTU Aero Engines Germany | PowerEdge 2650 Cluster P4 Xeon 2.4 GHz - Myrinet Dell | 128 | 2003 | 403.4 | 614.4 |
| 289 | Shell Malaysia | xSeries Cluster Xeon 2.4 GHz - Gig-E IBM | 256 | 2003 | 402.5 | 1228.8 |
| 290 | ShengriLi China | xSeries Cluster Xeon 2.4 GHz - Gig-E IBM | 256 | 2003 | 402.5 | 1228.8 |
| 291 | Sinopec China | xSeries Cluster Xeon 2.4 GHz - Gig-E IBM | 256 | 2003 | 402.5 | 1228.8 |
| 292 | I2 Technologies Inc. United States | pSeries 690 1.1GHz IBM | 160 | 2002 | 396 | 704 |
| 293 | EDINFOR Portugal | SP Power3 375 MHz IBM | 380 | 2002 | 393 | 570 |
| 294 | Fraunhofer ITWM Germany | Cluster P4 Xeon 2.4 GHz - Myrinet Linux Networx | 128 | 2003 | 390.2 | 614.4 |
| 295 | Capital One Services United States | pSeries 690 Turbo 1.3GHz GigEth IBM | 160 | 2002 | 389 | 832 |
| 296 | Tokyo University of Science Japan | pSeries 690 Turbo 1.3GHz GigEth IBM | 160 | 2002 | 389 | 832 |
| 297 | Exploration & Development Res. Inst. of Daqing Oil Field China | DeepComp 1800 - P4 Xeon 2.4 GHz - Giganet lenovo | 256 | 2003 | 385.4 | 1228 |
| 298 | HPCCC, Hong Kong Baptist University Hong Kong | PowerEdge 2650 Cluster P4 Xeon 2.8 GHz - GigE Dell | 128 | 2003 | 383.2 | 716.8 |
| 299 | Naval Research Laboratory (NRL) United States | Altix 3700 1 GHz SGI | 128 | 2003 | 378.9 | 512 |
| 300 | Cambridge University - COSMOS United Kingdom | Altix 3700 900 MHz SGI | 128 | 2003 | 378.9 | 460.8 |