| Rank | Site | Computer | Cores | Year | Rmax | Rpeak | | 101 | Credit Suisse Switzerland | BladeCenter HS20 Xeon 2.8 GHz, Gig-Ethernet IBM | 1500 | 2004 | 2026 | 8400 |
| 102 | WETA Digital New Zealand | BladeCenter Cluster Xeon 2.8 GHz, Gig-Ethernet IBM | 1176 | 2003 | 2026 | 6585.6 |
| 103 | Semiconductor Company (C) United States | xSeries Xeon 2.8 GHz, Gig-Ethernet IBM | 1140 | 2003 | 2026 | 6384 |
| 104 | Semiconductor Company (C) United States | xSeries Xeon 2.8 GHz, Gig-Ethernet IBM | 1140 | 2003 | 2026 | 6384 |
| 105 | WETA Digital New Zealand | BladeCenter Cluster Xeon 2.8 GHz, Gig-Ethernet IBM | 1080 | 2003 | 2026 | 6048 |
| 106 | Semiconductor Company (C) United States | xSeries Xeon 2.8 GHz, Gig-Ethernet IBM | 1030 | 2003 | 2026 | 5768 |
| 107 | Semiconductor Company (C) United States | xSeries Xeon 2.8 GHz, Gig-Ethernet IBM | 1028 | 2003 | 2026 | 5756.8 |
| 108 | Semiconductor Company (C) United States | xSeries Xeon 2.8 GHz, Gig-Ethernet IBM | 1028 | 2003 | 2026 | 5756.8 |
| 109 | C.O.R.E. Digital Pictures Inc Canada | BladeCenter Xeon 2.8 GHz, Gig-Ethernet IBM | 1008 | 2004 | 2026 | 5644.8 |
| 110 | Geotrace United States | xSeries Xeon 2.8 GHz, Gig-Ethernet IBM | 1000 | 2003 | 2026 | 5600 |
| 111 | Geotrace United States | xSeries Xeon 2.8 GHz, Gig-Ethernet IBM | 1000 | 2004 | 2026 | 5600 |
| 112 | Geotrace United States | xSeries Xeon 2.8 GHz, Gig-Ethernet IBM | 1000 | 2004 | 2026 | 5600 |
| 113 | Geotrace United States | xSeries Xeon 2.8 GHz, Gig-Ethernet IBM | 1000 | 2004 | 2026 | 5600 |
| 114 | Geotrace United States | xSeries Xeon 2.8 GHz, Gig-Ethernet IBM | 1000 | 2004 | 2026 | 5600 |
| 115 | Geotrace United States | xSeries Xeon 2.8 GHz, Gig-Ethernet IBM | 1000 | 2004 | 2026 | 5600 |
| 116 | GX Technology United States | xSeries Xeon 2.8 GHz, Gig-Ethernet IBM | 880 | 2004 | 2026 | 4928 |
| 117 | Semiconductor Company (C) United States | xSeries Xeon 2.8 GHz, Gig-Ethernet IBM | 712 | 2004 | 2026 | 3987.2 |
| 118 | Geoscience (D) Mexico | xSeries Xeon 2.8 GHz, Gig-Ethernet IBM | 706 | 2003 | 2026 | 3953.6 |
| 119 | Geoscience (D) Mexico | xSeries Xeon 2.8 GHz, Gig-Ethernet IBM | 706 | 2003 | 2026 | 3953.6 |
| 120 | Geoscience (D) Mexico | xSeries Xeon 2.8 GHz, Gig-Ethernet IBM | 706 | 2003 | 2026 | 3953.6 |
| 121 | UBS Warburg United Kingdom | BladeCenter Xeon 2.8 GHz, Gig-Ethernet IBM | 650 | 2004 | 2026 | 3640 |
| 122 | Semiconductor Company (C) United States | xSeries Xeon 2.8 GHz, GigEthernet IBM | 608 | 2004 | 2019.48 | 3404.8 |
| 123 | Semiconductor Company (C) United States | xSeries Xeon 2.8 GHz, GigEthernet IBM | 608 | 2004 | 2019.48 | 3404.8 |
| 124 | University at Buffalo, SUNY, Center for Computational Res. United States | Joplin - PowerEdge 2650 Cluster P4 Xeon 2.4 GHz - Myrinet Dell | 600 | 2002 | 2004 | 2880 |
| 125 | Semiconductor Company (C) United States | xSeries Xeon 2.8 GHz, Gig-Ethernet IBM | 602 | 2003 | 1999.91 | 3371.2 |
| 126 | Grid Technology Research Center, AIST Japan | AIST Super Cluster F-32, Xeon 3.06 GHz, GigE Linux Networx | 512 | 2004 | 1997 | 3133.4 |
| 127 | Semiconductor Company (D) Israel | xSeries Xeon 2.8 GHz, Gig-Ethernet IBM | 600 | 2003 | 1993.39 | 3360 |
| 128 | University of Sherbrooke Canada | Mp - eServer Opteron 2.2 GHZ, Infiniband IBM | 936 | 2004 | 1930 | 4118.4 |
| 129 | Semiconductor Company (C) United States | xSeries Xeon 2.8 GHz, Gig-Ethernet IBM | 580 | 2003 | 1928.15 | 3248 |
| 130 | PETROBRAS Brazil | trindade - BladeCenter HS20 Cluster, Xeon 3.2 GHz, GigEthernet IBM | 512 | 2004 | 1922.56 | 3276.8 |
| 131 | PGS Australia | xSeries Xeon 3.06 GHz - Gig-E IBM | 512 | 2004 | 1922.56 | 3133.44 |
| 132 | PGS United States | xSeries Xeon 3.06 GHz - Gig-E IBM | 512 | 2004 | 1922.56 | 3133.44 |
| 133 | Petroleum Company (D) China | BladeCenter Xeon 3.06 GHz, Gig-Ethernet IBM | 512 | 2004 | 1922.56 | 3133.44 |
| 134 | UBS Warburg United Kingdom | BladeCenter HS20 Xeon 3.06 GHz, Gig-Ethernet IBM | 512 | 2004 | 1922.56 | 3133.44 |
| 135 | Naval Oceanographic Office (NAVOCEANO) United States | eServer pSeries 655 (1.5 GHz Power4+) IBM | 512 | 2004 | 1918.57 | 3072 |
| 136 | National Center for High Performance Computing Taiwan | Cluster Platform 6000 rx2600 Itanium2 1.5 GHz, Quadrics Hewlett-Packard | 384 | 2004 | 1889 | 2304 |
| 137 | Digital Media Company (E) United States | Cluster Platform 3000 DL360G3 Xeon 3.06 GHz, Myrinet Hewlett-Packard | 500 | 2004 | 1877 | 3060 |
| 138 | Digital Media Company (E) United States | Cluster Platform 3000 DL360G3 Xeon 3.06 GHz, Myrinet Hewlett-Packard | 500 | 2004 | 1877 | 3060 |
| 139 | Digital Media Company (E) United States | Cluster Platform 3000 DL360G3 Xeon 3.06 GHz, Myrinet Hewlett-Packard | 500 | 2004 | 1877 | 3060 |
| 140 | Digital Media Company (D) United States | Blade Cluster BL-20P, Pentium4 Xeon 3.06 GHz Hewlett-Packard | 600 | 2004 | 1872 | 3672 |
| 141 | Digital Media Company (D) United States | Blade Cluster BL-20P, Pentium4 Xeon 3.06 GHz Hewlett-Packard | 600 | 2004 | 1872 | 3672 |
| 142 | Digital Media Company (D) United States | Blade Cluster BL-20P, Pentium4 Xeon 3.06 GHz Hewlett-Packard | 600 | 2004 | 1872 | 3672 |
| 143 | Digital Media Company (D) United States | Blade Cluster BL-20P, Pentium4 Xeon 3.06 GHz Hewlett-Packard | 600 | 2004 | 1872 | 3672 |
| 144 | Digital Media Company (D) United States | Blade Cluster BL-20P, Pentium4 Xeon 3.06 GHz Hewlett-Packard | 600 | 2004 | 1872 | 3672 |
| 145 | Digital Media Company (D) United States | Blade Cluster BL-20P, Pentium4 Xeon 3.06 GHz Hewlett-Packard | 600 | 2004 | 1872 | 3672 |
| 146 | Digital Media Company (D) United States | Blade Cluster BL-20P, Pentium4 Xeon 3.06 GHz Hewlett-Packard | 600 | 2004 | 1872 | 3672 |
| 147 | Digital Media Company (D) United States | Blade Cluster BL-20P, Pentium4 Xeon 3.06 GHz Hewlett-Packard | 600 | 2004 | 1872 | 3672 |
| 148 | National Centers for Environmental Prediction United States | pSeries 690 Turbo 1.3GHz IBM | 704 | 2002 | 1849 | 3660.8 |
| 149 | National Centers for Environmental Prediction United States | pSeries 690 Turbo 1.3GHz IBM | 704 | 2002 | 1849 | 3660.8 |
| 150 | DOE/Bettis Atomic Power Laboratory United States | Itanium2 1.3 GHz, Myrinet Atipa Technology | 536 | 2004 | 1820 | 2787 |
| 151 | DOE/Knolls Atomic Power Laboratory United States | Itanium2 1.3 GHz, Myrinet Atipa Technology | 536 | 2004 | 1820 | 2787 |
| 152 | Semiconductor Company (C) United States | xSeries Xeon 2.8 GHz, Gig-Ethernet IBM | 546 | 2004 | 1817.26 | 3057.6 |
| 153 | University at Buffalo, SUNY, Center for Computational Res. United States | BladeCenter Xeon 2.8 GHz, Gig-Ethernet IBM | 546 | 2004 | 1817.26 | 3057.6 |
| 154 | SARA (Stichting Academisch Rekencentrum) Netherlands | SGI Altix 1.3 GHz SGI | 416 | 2003 | 1793 | 2163 |
| 155 | DaimlerChrysler Germany | NEC Opteron Cluster, 2.0 GHz, GigEthernet NEC | 896 | 2004 | 1778 | 3584 |
| 156 | KISTI Supercomputing Center Korea, South | xSeries Xeon 2.8 GHz - Myrinet IBM | 512 | 2004 | 1762 | 2867 |
| 157 | KISTI Supercomputing Center Korea, South | pSeries 690 Turbo 1.7 GHz IBM | 544 | 2003 | 1760 | 3699.2 |
| 158 | Semiconductor Company (C) United States | xSeries Cluster Xeon 2.4 GHz - Gig-E IBM | 1834 | 2003 | 1755 | 8803.2 |
| 159 | Compagnie Generale de Geophysique (CGG) United Kingdom | xSeries Cluster Xeon 2.4 GHz - Gig-E IBM | 1100 | 2003 | 1755 | 5280 |
| 160 | Arizona State University/TGEN United States | xSeries Cluster Xeon 2.4 GHz - Gig-E IBM | 1048 | 2003 | 1755 | 5030.4 |
| 161 | Paradigm Geophysical United States | BladeCenter Cluster Xeon 2.4 GHz, Gig-Ethernet IBM | 1024 | 2003 | 1755 | 4915.2 |
| 162 | TotalFinaElf France | xSeries Cluster Xeon 2.4 GHz - Gig-E IBM | 1024 | 2003 | 1755 | 4915.2 |
| 163 | Compagnie Generale de Geophysique (CGG) United Kingdom | BladeCenter Cluster Xeon 2.8 GHz, Gig-Ethernet IBM | 520 | 2003 | 1732.46 | 2912 |
| 164 | University of Tokyo Japan | SR8000/MPP Hitachi | 1152 | 2001 | 1709.1 | 2074 |
| 165 | Petroleum Company (F) Netherlands | xSeries Xeon 2.8 GHz, Gig-Ethernet IBM | 512 | 2004 | 1706.37 | 2867.2 |
| 166 | Semiconductor Company (C) United States | xSeries Xeon 2.8 GHz, Gig-Ethernet IBM | 510 | 2003 | 1699.85 | 2856 |
| 167 | SG SGBI France | xSeries Cluster Xeon 2.4 GHz - Gig-E IBM | 968 | 2003 | 1685.49 | 4646.4 |
| 168 | Media & Entertainment (B) United States | xSeries Xeon 2.8 GHz, Gig-Ethernet IBM | 500 | 2004 | 1667.23 | 2800 |
| 169 | Leibniz Rechenzentrum Germany | SR8000-F1/168 Hitachi | 168 | 2002 | 1653 | 2016 |
| 170 | Media & Entertainment (A) United States | xSeries Xeon 3.06 GHz - Gig-E IBM | 440 | 2004 | 1652.2 | 2692.8 |
| 171 | Fleet Numerical Meteorology and Oceanography Center United States | xSeries Xeon 2.8 GHz - Myrinet IBM | 478 | 2004 | 1649.71 | 2676.8 |
| 172 | Semiconductor Company (C) United States | xSeries Cluster Xeon 2.8 GHz - Gig-Ethernet IBM | 494 | 2004 | 1647.66 | 2766.4 |
| 173 | Manufacturer (G) United States | eServer pSeries 655 (1.7 GHz Power4+, GigE) IBM | 1152 | 2004 | 1636 | 7833.6 |
| 174 | Manufacturer (G) United States | eServer pSeries 655 (1.7 GHz Power4+, GigE) IBM | 1152 | 2004 | 1636 | 7833.6 |
| 175 | Grid Technology Research Center, AIST Japan | AIST Super Cluster M-64 - AIST Super Cluster M-64, Itanium2 1.3 GHz, Myrinet IBM | 512 | 2004 | 1636 | 2662.4 |
| 176 | CNRS/IDRIS France | eServer pSeries 690 (1.7 GHz Power4+) IBM | 384 | 2004 | 1630 | 2611.2 |
| 177 | Media & Entertainment (A) United States | xSeries Xeon 3.06 GHz - Gig-E IBM | 430 | 2004 | 1614.65 | 2631.6 |
| 178 | Media & Entertainment (A) United States | xSeries Xeon 3.06 GHz - Gig-E IBM | 430 | 2004 | 1614.65 | 2631.6 |
| 179 | Los Alamos National Laboratory United States | ASCI Blue Mountain SGI | 6144 | 1998 | 1608 | 3072 |
| 180 | Veritas DGC United States | Opteron 2.2 GHz, GigE Verari Systems | 992 | 2004 | 1580 | 4364.8 |
| 181 | GX Technology United States | xSeries Cluster Xeon 2.4 GHz - Gig-E IBM | 880 | 2003 | 1576.25 | 4224 |
| 182 | Semiconductor Company (C) United States | xSeries Xeon 2.8 GHz - Gig-Ethernet IBM | 472 | 2004 | 1575.31 | 2643.2 |
| 183 | Geoscience (A) China | BladeCenter Xeon 3.06 GHz, Gig-Ethernet IBM | 412 | 2004 | 1547.06 | 2521.44 |
| 184 | Ford Motor Company United States | eServer Opteron 2.2 GHz. Myrinet IBM | 512 | 2004 | 1538.59 | 2252.8 |
| 185 | IBM - Deep Computing Capacity on Demand Center United States | xSeries Xeon 3.06 GHz - Gig-E IBM | 406 | 2004 | 1524.53 | 2484.72 |
| 186 | IBM - Deep Computing Capacity on Demand Center United States | xSeries Xeon 3.06 GHz - Gig-E IBM | 406 | 2004 | 1524.53 | 2484.72 |
| 187 | IBM - Deep Computing Capacity on Demand Center United States | xSeries Xeon 3.06 GHz - Gig-E IBM | 406 | 2004 | 1524.53 | 2484.72 |
| 188 | IBM - Deep Computing Capacity on Demand Center United States | xSeries Xeon 3.06 GHz - Gig-E IBM | 406 | 2004 | 1524.53 | 2484.72 |
| 189 | Oracle Corporation United States | Cluster Platform 3000 DL380G3, Pentium4 Xeon 2.8 GHz, Myrinet Hewlett-Packard | 468 | 2004 | 1519.6 | 2620.8 |
| 190 | Oracle Corporation United States | Cluster Platform 3000 DL380G3, Pentium4 Xeon 2.8 GHz, Myrinet Hewlett-Packard | 468 | 2004 | 1519.6 | 2620.8 |
| 191 | Oracle Corporation United States | Cluster Platform 3000 DL380G3, Pentium4 Xeon 2.8 GHz, Myrinet Hewlett-Packard | 468 | 2004 | 1519.6 | 2620.8 |
| 192 | Sandia National Laboratories United States | Vplant Cluster P4 XEON 2.4/2.0 GHz - Myrinet Dell | 660 | 2002 | 1504 | 2963 |
| 193 | Cornell Theory Center United States | PowerEdge 2650 Cluster P4 Xeon 2.4 GHz/MSWindows - GigE Dell | 640 | 2003 | 1503 | 3073 |
| 194 | Petroleum Company (G) Saudia Arabia | xSeries x335 Cluster, Xeon 3.2 GHz, GigEthernet IBM | 400 | 2004 | 1502 | 2560 |
| 195 | Eltra Israel | BladeCenter HS20 Xeon 3.06 GHz, Gig-Ethernet IBM | 400 | 2004 | 1502 | 2448 |
| 196 | Sony Online Gaming United States | BladeCenter Xeon 3.06 GHz, Gig-Ethernet IBM | 400 | 2004 | 1502 | 2448 |
| 197 | DKRZ - Deutsches Klimarechenzentrum Germany | SX-6/192M24 NEC | 192 | 2003 | 1484 | 1536 |
| 198 | CNRS/IDRIS France | eServer pSeries 655 - 4way (1.7 GHz Power4+) IBM | 384 | 2004 | 1477 | 2611.2 |
| 199 | Verisign United States | xSeries Cluster Xeon 2.4 GHz - Gig-E IBM | 800 | 2003 | 1476.94 | 3840 |
| 200 | University of Toronto Canada | PowerRACK-HX dual Xeon 2.4 GHz - SMC GigE Self-made | 528 | 2003 | 1455 | 2534.4 |
| 201 | Cray Inc. United States | Cray X1 Cray Inc. | 124 | 2004 | 1448.42 | 1587.2 |
| 202 | US Army HPC Research Center at NCS United States | Cray X1 Cray Inc. | 124 | 2003 | 1448.42 | 1587.2 |
| 203 | University of Alaska - ARSC United States | Cray X1 Cray Inc. | 124 | 2003 | 1448.42 | 1587.2 |
| 204 | Semiconductor Company (C) United States | xSeries Xeon 2.8 GHz, Gig-Ethernet IBM | 428 | 2004 | 1428.54 | 2396.8 |
| 205 | IBM United States | pSeries 690 Turbo 1.7 GHz GigEth IBM | 384 | 2003 | 1424 | 2611.2 |
| 206 | Energy Company (D) United States | Cluster Platform 6000 rx4640-4x136 Itanium2 1.3 GHz, GigE Hewlett-Packard | 544 | 2003 | 1418 | 2828.8 |
| 207 | Naval Oceanographic Office (NAVOCEANO) United States | SP Power3 375 MHz IBM | 1336 | 2000 | 1417 | 2004 |
| 208 | University of Shanghai China | Cluster Platform 3000 DL360G3 Xeon 3.06 GHz, Infiniband Hewlett-Packard | 348 | 2004 | 1401 | 2129.8 |
| 209 | Joint Supercomputer Center Russia | MVS-5000BM, eServer BladeCenter JS20 (PowerPC970 1.6 GHz), Myrinet IBM | 336 | 2004 | 1401 | 2112 |
| 210 | Mississippi State University United States | Maverick - xSeries x335 Cluster, Xeon 3.06 GHz, Infiniband IBM | 384 | 2004 | 1389 | 2350 |
| 211 | Altria Group - Philip Morris Management United States | pSeries 690 Turbo 1.3GHz IBM | 512 | 2004 | 1384 | 2662.4 |
| 212 | CINECA Italy | pSeries 690 Turbo 1.3GHz IBM | 512 | 2002 | 1384 | 2662.4 |
| 213 | HLRN at Universitaet Hannover / RRZN Germany | pSeries 690 Turbo 1.3GHz IBM | 512 | 2004 | 1384 | 2662.4 |
| 214 | HLRN at ZIB/Konrad Zuse-Zentrum fuer Informationstechnik Germany | pSeries 690 Turbo 1.3GHz IBM | 512 | 2004 | 1384 | 2662.4 |
| 215 | Acxiom United States | Cluster Platform 3000 DL360G3, Xeon 3.2 GHz, Myrinet Hewlett-Packard | 400 | 2004 | 1382 | 2560 |
| 216 | National Institute for Fusion Science Japan | SX-7/160M5 NEC | 160 | 2003 | 1378 | 1412.8 |
| 217 | Raytheon United States | BladeCenter Xeon 3.06 GHz, Gig-Ethernet IBM | 364 | 2003 | 1366.82 | 2227.68 |
| 218 | Biotech Company (A) United Kingdom | BladeCenter Xeon 2.8 GHz, Gig-Ethernet IBM | 400 | 2004 | 1335.13 | 2240 |
| 219 | Umea University / HPC2N Sweden | HP Opteron 2.2 GHz, Myrinet Hewlett-Packard | 384 | 2004 | 1329 | 1689.6 |
| 220 | The University of Florida High-Performance Computing Center United States | PowerEdge 1750, Pentium4 Xeon 2.8 GHz, GigE Dell | 400 | 2004 | 1325 | 2240 |
| 221 | Pennsylvania State University United States | LION-XM - PowerEdge 1750, P4 Xeon 3.06 GHz, Myrinet Dell | 336 | 2004 | 1319.67 | 2056.32 |
| 222 | Semiconductor Company (C) United States | xSeries Cluster Xeon 2.4 GHz - Gig-E IBM | 666 | 2004 | 1310.61 | 3196.8 |
| 223 | Consumer Goods Australia | eServer pSeries 690 (1.7 GHz Power4+, GigE) IBM | 352 | 2004 | 1305.33 | 2393.6 |
| 224 | Academy of Mathematics and System Science China | DeepComp 1800 - P4 Xeon 2 GHz - Myrinet lenovo | 512 | 2002 | 1297 | 2048 |
| 225 | US Government Classified (A) United States | Cluster Platform 6000 zx6000 Itanium2 1.5 GHz, Myrinet Hewlett-Packard | 256 | 2004 | 1293 | 1536 |
| 226 | Seoul National University Korea, South | Pegasus P4 Xeon Cluster 2.2/2.4/2.8 GHz - Giganet Self-made | 520 | 2004 | 1283 | 2557 |
| 227 | Semiconductor Company (C) United States | xSeries Xeon 2.8 GHz - Gig-Ethernet IBM | 384 | 2004 | 1281.76 | 2150.4 |
| 228 | Digital China Ltd. China | SuperDome 1 GHz/HPlex Hewlett-Packard | 560 | 2004 | 1280.97 | 2240 |
| 229 | OpenPSL Ltd. United Kingdom | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 640 | 2004 | 1276.7 | 2240 |
| 230 | Telecom Italia Italy | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 640 | 2004 | 1276.7 | 2240 |
| 231 | Telecom Italia Italy | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 640 | 2004 | 1276.7 | 2240 |
| 232 | Telecom Italia Italy | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 640 | 2004 | 1276.7 | 2240 |
| 233 | Telecom Italia Italy | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 640 | 2004 | 1276.7 | 2240 |
| 234 | Semiconductor Company (C) United States | xSeries x336 Cluster, Xeon EM64T 3.2 GHz, GigEthernet IBM | 340 | 2004 | 1276.7 | 2176 |
| 235 | Deutsche Telekom AG Germany | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 640 | 2004 | 1263.3 | 2240 |
| 236 | Vodafone (KK) Chuo Japan | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 640 | 2004 | 1263.3 | 2240 |
| 237 | Vodafone (KK) Chuo Japan | SuperDome 875 MHz/HyperPlex Hewlett-Packard | 640 | 2004 | 1263.3 | 2240 |
| 238 | Financial Services (H) United States | BladeCenter Xeon 3.06 GHz, Gig-Ethernet IBM | 336 | 2004 | 1261.68 | 2056.32 |
| 239 | CEG Gramat France | SGI Altix 1.5 GHz SGI | 256 | 2004 | 1258.53 | 1536 |
| 240 | CSAR at the University of Manchester United Kingdom | SGI Altix 1.5 GHz SGI | 256 | 2004 | 1258.53 | 1536 |
| 241 | Los Alamos National Laboratory United States | SGI Altix 1.5 GHz SGI | 256 | 2004 | 1258.53 | 1536 |
| 242 | NOAA/Geophysical Fluid Dynamics Laboratory (GFDL) United States | SGI Altix 1.5 GHz SGI | 256 | 2004 | 1258.53 | 1536 |
| 243 | NOAA/Geophysical Fluid Dynamics Laboratory (GFDL) United States | SGI Altix 1.5 GHz SGI | 256 | 2004 | 1258.53 | 1536 |
| 244 | Oak Ridge National Laboratory United States | SGI Altix 1.5 GHz SGI | 256 | 2003 | 1258.53 | 1536 |
| 245 | US Army Research Laboratory (ARL) United States | SGI Altix 1.5 GHz SGI | 256 | 2004 | 1258.53 | 1536 |
| 246 | Public Sector China | xSeries Cluster Xeon 2.4 GHz - Gig-E IBM | 622 | 2003 | 1255.99 | 2985.6 |
| 247 | University of Houston United States | Cluster Platform 6000 rx2600 Itanium2 1.3 GHz Cluster Hewlett-Packard | 304 | 2003 | 1253 | 1580 |
| 248 | DaimlerChrysler Germany | xSeries Xeon 3.06 GHz, Myrinet IBM | 260 | 2004 | 1231.05 | 1591.2 |
| 249 | Societe Generale France | Cluster Platform 3000 DL360G3, Xeon 3.2 GHz, GigEthernet Hewlett-Packard | 320 | 2004 | 1228 | 2048 |
| 250 | Cambridge University United Kingdom | Franklin - Fire 15K 1.2 GHz Sun Microsystems | 900 | 2002 | 1226.4 | 2160 |
| 251 | Semiconductor Company (C) United States | xSeries x336 Cluster, Xeon EM64T 3.2 GHz, GigEthernet IBM | 324 | 2004 | 1216.62 | 2073.6 |
| 252 | Semiconductor Company (C) United States | xSeries x336 Cluster, Xeon EM64T 3.2 GHz, GigEthernet IBM | 324 | 2004 | 1216.62 | 2073.6 |
| 253 | Semiconductor Company (C) United States | xSeries x336 Cluster, Xeon EM64T 3.2 GHz, GigEthernet IBM | 324 | 2004 | 1216.62 | 2073.6 |
| 254 | Semiconductor Company (C) United States | xSeries x336 Cluster, Xeon EM64T 3.2 GHz, GigEthernet IBM | 324 | 2004 | 1216.62 | 2073.6 |
| 255 | MTU Aero Engines Germany | xSeries Xeon 3.06 GHz, Myrinet IBM | 256 | 2004 | 1215.31 | 1566.72 |
| 256 | University of Liverpool United Kingdom | PowerEdge 650, 3.06 GHz, Gig Ethernet Dell | 940 | 2003 | 1212 | 5752.8 |
| 257 | Telkom SA South Africa | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 384 | 2004 | 1210 | 2304 |
| 258 | Banco Azteca Mexico | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 352 | 2004 | 1210 | 2112 |
| 259 | HP Financial Services Germany | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 320 | 2004 | 1210 | 1920 |
| 260 | Hewlett-Packard United States | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 320 | 2004 | 1210 | 1920 |
| 261 | Hewlett-Packard United States | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 320 | 2004 | 1210 | 1920 |
| 262 | Telkom SA South Africa | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 320 | 2004 | 1210 | 1920 |
| 263 | Manufacturing Company (F) Italy | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 288 | 2004 | 1210 | 1728 |
| 264 | SBM Gates Arrow Com. United States | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 288 | 2004 | 1210 | 1728 |
| 265 | SDH Germany | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 288 | 2004 | 1210 | 1728 |
| 266 | Tech Pacific Exports C India | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 288 | 2004 | 1210 | 1728 |
| 267 | Telecom SKT Korea, South | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 288 | 2004 | 1210 | 1728 |
| 268 | Carrefour Spain | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 256 | 2004 | 1210 | 1536 |
| 269 | Ericsson Sweden | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 256 | 2004 | 1210 | 1536 |
| 270 | Hewlett-Packard United States | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 256 | 2004 | 1210 | 1536 |
| 271 | Hewlett-Packard United States | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 256 | 2004 | 1210 | 1536 |
| 272 | Hewlett-Packard United States | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 256 | 2004 | 1210 | 1536 |
| 273 | Hewlett-Packard United States | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 256 | 2004 | 1210 | 1536 |
| 274 | Hewlett-Packard United States | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 256 | 2004 | 1210 | 1536 |
| 275 | Hewlett-Packard United States | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 256 | 2004 | 1210 | 1536 |
| 276 | Humantel Portugal | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 256 | 2004 | 1210 | 1536 |
| 277 | Instituto Latinoamericano Mexico | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 256 | 2004 | 1210 | 1536 |
| 278 | SARL International Germany | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 256 | 2004 | 1210 | 1536 |
| 279 | SBM Gates Arrow Com. United States | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 256 | 2004 | 1210 | 1536 |
| 280 | Semiconductor Company (C) United States | xSeries Xeon 3.06 GHz - Gig-E IBM | 322 | 2004 | 1209.11 | 1970.64 |
| 281 | Bear Stearns United States | DL560, Pentium4 Xeon 2.6 GHz, Myrinet Hewlett-Packard | 400 | 2004 | 1206 | 2080 |
| 282 | BellSouth United States | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 256 | 2004 | 1198.1 | 1536 |
| 283 | CANTV/GTE Venezuela | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 256 | 2004 | 1198.1 | 1536 |
| 284 | HP Financial Services United States | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 256 | 2004 | 1198.1 | 1536 |
| 285 | Hitachi Japan | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 256 | 2004 | 1198.1 | 1536 |
| 286 | SARL International Germany | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 256 | 2004 | 1198.1 | 1536 |
| 287 | SDH Germany | Integrity Superdome, 1.5 GHz, HPlex Hewlett-Packard | 256 | 2004 | 1198.1 | 1536 |
| 288 | Semiconductor Company (F) India | xSeries Cluster Xeon 2.4 GHz - Gig-E IBM | 574 | 2003 | 1196.41 | 2755.2 |
| 289 | Lawrence Livermore National Laboratory United States | SP Power3 375 MHz 16 way IBM | 1088 | 2001 | 1193 | 1632 |
| 290 | Osaka University Japan | SX-5/128M8 3.2ns NEC | 128 | 2001 | 1192 | 1280 |
| 291 | Semiconductor Company (C) United States | xSeries Xeon 2.8 GHz, Gig-Ethernet IBM | 354 | 2004 | 1181.68 | 1982.4 |
| 292 | Petroleum Company (G) Saudia Arabia | xSeries Cluster Xeon 2.4 GHz - Gig-E IBM | 562 | 2003 | 1181.51 | 2697.6 |
| 293 | Hewlett-Packard United States | SuperDome 1 GHz/HPlex Hewlett-Packard | 512 | 2004 | 1172.8 | 2048 |
| 294 | CSC (Center for Scientific Computing) Finland | pSeries 690 1.1GHz IBM | 512 | 2002 | 1170 | 2253 |
| 295 | Florida State University United States | pSeries 690 1.1GHz IBM | 512 | 2002 | 1170 | 2253 |
| 296 | Telecom Italia Italy | SuperDome 1 GHz/HPlex Hewlett-Packard | 512 | 2004 | 1170 | 2048 |
| 297 | Doshisha University Japan | Opteron 1.8 GHz, Gig Ethernet Visual Technology | 512 | 2003 | 1169 | 1843.2 |
| 298 | Government United States | T3E1200 Cray Inc. | 1900 | 2001 | 1166 | 2280 |
| 299 | ERDC MSRC United States | T3E1200/900 Cray Inc. | 1792 | 1999 | 1166 | 1999 |
| 300 | National Center for High Performance Computing Taiwan | Formosa PC cluster - Pentium4 Xeon, 3.0/2.8 GHz, Gig Ethernet Self-made | 340 | 2004 | 1166 | 1920 |