| Rank | Site | Computer | Cores | Year | Rmax | Rpeak | | 1 | DOE/NNSA/LLNL United States | BlueGene/L - eServer Blue Gene Solution IBM | 131072 | 2005 | 280.60 | 367.00 |
| 2 | Oak Ridge National Laboratory United States | Jaguar - Cray XT4/XT3 Cray Inc. | 23016 | 2006 | 101.70 | 119.35 |
| 3 | NNSA/Sandia National Laboratories United States | Red Storm - Sandia/ Cray Red Storm, Opteron 2.4 GHz dual core Cray Inc. | 26544 | 2006 | 101.40 | 127.41 |
| 4 | IBM Thomas J. Watson Research Center United States | BGW - eServer Blue Gene Solution IBM | 40960 | 2005 | 91.29 | 114.69 |
| 5 | Stony Brook/BNL, New York Center for Computional Sciences United States | New York Blue - eServer Blue Gene Solution IBM | 36864 | 2007 | 82.16 | 103.22 |
| 6 | DOE/NNSA/LLNL United States | ASC Purple - eServer pSeries p5 575 1.9 GHz IBM | 12208 | 2006 | 75.76 | 92.78 |
| 7 | Rensselaer Polytechnic Institute, Computional Center for Nanotechnology Innovations United States | eServer Blue Gene Solution IBM | 32768 | 2007 | 73.03 | 91.75 |
| 8 | NCSA United States | Abe - PowerEdge 1955, 2.33 GHz, Infiniband Dell | 9600 | 2007 | 62.68 | 89.59 |
| 9 | Barcelona Supercomputing Center Spain | MareNostrum - BladeCenter JS21 Cluster, PPC 970, 2.3 GHz, Myrinet IBM | 10240 | 2006 | 62.63 | 94.21 |
| 10 | Leibniz Rechenzentrum Germany | HLRB-II - Altix 4700 1.6 GHz SGI | 9728 | 2007 | 56.52 | 62.26 |
| 11 | NNSA/Sandia National Laboratories United States | Thunderbird - PowerEdge 1850, 3.6 GHz, Infiniband Dell | 9024 | 2006 | 53.00 | 64.97 |
| 12 | Commissariat a l'Energie Atomique (CEA) France | Tera-10 - NovaScale 5160, Itanium2 1.6 GHz, Quadrics Bull SA | 9968 | 2006 | 52.84 | 63.80 |
| 13 | NASA/Ames Research Center/NAS United States | Columbia - SGI Altix 1.5 GHz, Voltaire Infiniband SGI | 10160 | 2004 | 51.87 | 60.96 |
| 14 | GSIC Center, Tokyo Institute of Technology Japan | TSUBAME Grid Cluster - Sun Fire x4600 Cluster, Opteron 2.4/2.6 GHz and ClearSpeed Accelerator, Infiniband NEC/Sun | 11088 | 2006 | 48.88 | 78.80 |
| 15 | Texas Advanced Computing Center/Univ. of Texas United States | Lonestar - PowerEdge 1955, 2.66 GHz, Infiniband Dell | 5848 | 2007 | 46.73 | 62.22 |
| 16 | Maui High-Performance Computing Center (MHPCC) United States | Jaws - PowerEdge 1955, 3.0 GHz, Infiniband Dell | 5200 | 2006 | 42.39 | 62.40 |
| 17 | US Army Research Laboratory (ARL) United States | Michael J. Muuss Cluster (MJM) - Evolocity II (LS Supersystem) Xeon 51xx 3.0 GHz IB Linux Networx | 4416 | 2007 | 40.61 | 52.99 |
| 18 | Forschungszentrum Juelich (FZJ) Germany | JUBL - eServer Blue Gene Solution IBM | 16384 | 2006 | 37.33 | 45.88 |
| 19 | Lawrence Livermore National Laboratory United States | Appro Xtreme Server - Quad Opteron Dual Core 2.4GHz Infiniband Appro International | 9216 | 2007 | 36.58 | 44.24 |
| 20 | The Earth Simulator Center Japan | Earth-Simulator NEC | 5120 | 2002 | 35.86 | 40.96 |
| 21 | ERDC MSRC United States | Sapphire - Cray XT3, 2.6 GHz dual Core Cray Inc. | 8192 | 2006 | 35.20 | 42.60 |
| 22 | Commissariat a l'Energie Atomique (CEA) France | CEA-CCRT-Platine - Novascale 3045, Itanium2 1.6 GHz, Infiniband Bull SA | 6144 | 2007 | 35.13 | 39.32 |
| 23 | Louisiana Optical Network Initiative United States | Queen Bee - PowerEdge 1950, 2.33 GHz, Infiniband Dell | 5440 | 2007 | 34.78 | 50.77 |
| 24 | Atomic Weapons Establishment United Kingdom | Cray XT3, 2.6 GHz dual Core Cray Inc. | 7812 | 2006 | 32.50 | 40.62 |
| 25 | University of North Carolina United States | Topsail - PowerEdge 1955, 2.33 GHz, Cisco/Topspin Infiniband Dell | 4160 | 2007 | 28.77 | 38.82 |
| 26 | ASTRON/University Groningen Netherlands | Stella - eServer Blue Gene Solution IBM | 12288 | 2005 | 27.45 | 34.41 |
| 27 | Wright-Patterson Air Force Base/DoD ASC United States | Altix 4700 1.6 GHz SGI | 4096 | 2007 | 23.82 | 26.21 |
| 28 | Wright-Patterson Air Force Base/DoD ASC United States | Altix 4700 1.6 GHz SGI | 4096 | 2007 | 23.82 | 26.21 |
| 29 | Caltech United States | CITerra - PowerEdge 1950, 2.33 GHz, Myrinet Dell | 4096 | 2007 | 22.59 | 37.70 |
| 30 | Indiana University United States | Big Red - BladeCenter JS21 Cluster, PPC 970, 2.5 GHz, Myrinet IBM | 3072 | 2007 | 21.79 | 30.72 |
| 31 | IBM - Rochester United States | Blue Gene/P Solution IBM | 8192 | 2007 | 20.86 | 27.85 |
| 32 | Naval Oceanographic Office (NAVOCEANO) United States | eServer pSeries p5 575 1.9 GHz IBM | 3072 | 2006 | 20.07 | 23.35 |
| 33 | IBM Advanced Client Technology Center United States | eServer pSeries p5 575 1.9 GHz IBM | 3072 | 2007 | 20.07 | 23.35 |
| 34 | Lawrence Livermore National Laboratory United States | Thunder - Intel Itanium2 Tiger4 1.4GHz - Quadrics California Digital Corporation | 4096 | 2004 | 19.94 | 22.94 |
| 35 | National Center for High Performance Computing Taiwan | xSeries x3550 Cluster Xeon, 3 GHz, Infiniband IBM | 2072 | 2007 | 19.91 | 24.86 |
| 36 | University of Reading United Kingdom | BladeCenter JS21 Cluster, PPC 970, 2.3 GHz, Myrinet IBM | 3040 | 2007 | 19.04 | 27.97 |
| 37 | Computational Biology Research Center, AIST Japan | Blue Protein - eServer Blue Gene Solution IBM | 8192 | 2005 | 18.67 | 22.94 |
| 38 | EDF R&D France | eServer Blue Gene Solution IBM | 8192 | 2007 | 18.67 | 22.94 |
| 39 | Ecole Polytechnique Federale de Lausanne Switzerland | eServer Blue Gene Solution IBM | 8192 | 2005 | 18.67 | 22.94 |
| 40 | High Energy Accelerator Research Organization /KEK Japan | KEK/BG Sakura - eServer Blue Gene Solution IBM | 8192 | 2006 | 18.67 | 22.94 |
| 41 | High Energy Accelerator Research Organization /KEK Japan | KEK/BG MOMO - eServer Blue Gene Solution IBM | 8192 | 2006 | 18.67 | 22.94 |
| 42 | IBM Rochester, On Demand Deep Computing Center United States | eServer Blue Gene Solution IBM | 8192 | 2006 | 18.67 | 22.94 |
| 43 | Sinopec ShengLI Oilfield Branch Company, Geophysical Research Institute China | BladeCenter HS21 Cluster, Xeon dual core, 2.33 GHz, GigEthernet IBM | 4096 | 2007 | 18.60 | 38.22 |
| 44 | Cambridge University United Kingdom | Darwin - PowerEdge 1950, 3.0 GHz, Infinipath Dell | 2340 | 2006 | 18.27 | 28.08 |
| 45 | University of Minnesota United States | SGI Altix XE 1300 Cluster Solutions, 2.66GHZ, Infiniband SGI | 2048 | 2007 | 17.31 | 21.79 |
| 46 | Pittsburgh Supercomputing Center United States | BigBen - Cray XT3, 2.6 GHz dual Core Cray Inc. | 4136 | 2006 | 17.00 | 21.51 |
| 47 | NCSA United States | T3 - PowerEdge 1955, 2.66 GHz, Infiniband Dell | 2048 | 2007 | 16.68 | 21.30 |
| 48 | ECMWF United Kingdom | eServer pSeries p5 575 1.9 GHz IBM | 2480 | 2007 | 16.20 | 18.85 |
| 49 | ECMWF United Kingdom | eServer pSeries p5 575 1.9 GHz IBM | 2480 | 2007 | 16.20 | 18.85 |
| 50 | COLSA United States | MACH5 - Apple XServe, 2.0 GHz, Myrinet Self-made | 3072 | 2005 | 16.18 | 24.58 |
| 51 | University of Tokyo Japan | SR11000-J2 Hitachi | 128 | 2007 | 15.81 | 18.84 |
| 52 | University of Southern California United States | HPC - Pentium4 Xeon, EM64T, Opteron, Opteron dual core, Cluster, Myrinet Sun Microsystems | 5400 | 2007 | 15.78 | 20.52 |
| 53 | Korea Meteorological Administration Korea, South | Cray X1E (4GB) Cray Inc. | 1020 | 2005 | 15.71 | 18.44 |
| 54 | Stanford University/Biomedical Computational Facility United States | Bio-X2 - PowerEdge 1950, 2.33 GHz, Infiniband Dell | 2208 | 2007 | 15.57 | 20.58 |
| 55 | National Centers for Environmental Prediction United States | eServer pSeries p5 575 1.9 GHz IBM | 2368 | 2006 | 15.47 | 18.00 |
| 56 | National Centers for Environmental Prediction United States | eServer pSeries p5 575 1.9 GHz IBM | 2368 | 2006 | 15.47 | 18.00 |
| 57 | US Army Research Laboratory (ARL) United States | Humvee - Evolocity II (LS Supersystem) Linux Networx | 3368 | 2006 | 15.20 | 19.66 |
| 58 | Oak Ridge National Laboratory United States | Cray X1E (2GB) Cray Inc. | 1014 | 2005 | 14.96 | 18.33 |
| 59 | Japan Marine Science and Technology Japan | Altix 4700 1.6 GHz SGI | 2560 | 2006 | 14.59 | 16.38 |
| 60 | Swiss Scientific Computing Center (CSCS) Switzerland | Cray XT3, 2.6 GHz dual Core Cray Inc. | 3328 | 2006 | 14.22 | 17.31 |
| 61 | CeSViMa - BSC Spain | BladeCenter JS20 Cluster, PPC 970, 2.2 GHz, Myrinet IBM | 2408 | 2006 | 14.00 | 21.19 |
| 62 | Los Alamos National Laboratory United States | ASCI Q - AlphaServer SC45, 1.25 GHz Hewlett-Packard | 8192 | 2002 | 13.88 | 20.48 |
| 63 | UCSD/San Diego Supercomputer Center United States | Intimidata - eServer Blue Gene Solution IBM | 6144 | 2006 | 13.78 | 17.20 |
| 64 | Cray Inc. United States | Cray XT4, 2.8 GHz Cray Inc. | 2832 | 2006 | 13.06 | 15.86 |
| 65 | HPCx United Kingdom | eServer pSeries p5 575 1.5 GHz IBM | 2560 | 2006 | 12.94 | 15.36 |
| 66 | University of Kentucky United States | BladeCenter HS21 Cluster, Xeon dual core 3.0 GHz, Infiniband IBM | 1360 | 2007 | 12.83 | 16.32 |
| 67 | CINECA Italy | BCX - eServer 326 Cluster, Opteron Dual Core 2.6 GHz, Infiniband IBM | 5120 | 2006 | 12.61 | 26.62 |
| 68 | Naval Oceanographic Office (NAVOCEANO) United States | eServer pSeries p5 575 1.9 GHz IBM | 1920 | 2006 | 12.54 | 14.59 |
| 69 | Brigham Young University United States | Marylou4 - PowerEdge 1955, 2.66 GHz, GigEthernet Dell | 2520 | 2006 | 12.51 | 26.81 |
| 70 | Geoscience (E) United States | BladeCenter LS20, Opteron 2.2 GHz Dual core, GigEthernet IBM | 5000 | 2005 | 12.31 | 22.00 |
| 71 | Virginia Tech United States | System X - 1100 Dual 2.3 GHz Apple XServe/Mellanox Infiniband 4X/Cisco GigE Self-made | 2200 | 2004 | 12.25 | 20.24 |
| 72 | IT Service Provider (B) United States | Cluster Platform 3000 BL460c, Xeon 51xx 3.0GHz, Infiniband Hewlett-Packard | 1568 | 2007 | 12.23 | 18.82 |
| 73 | Technische Universitaet Dresden Germany | Altix 4700 1.6 GHz SGI | 2048 | 2006 | 11.91 | 13.11 |
| 74 | Scientific Supercomputing Center Karlsruhe Germany | Cluster Platform 4000 DL145 Opteron Dual Core 2.6 GHz Infiniband Hewlett-Packard | 3000 | 2006 | 11.86 | 15.60 |
| 75 | Japan Atomic Energy Research Institute Japan | SGI Altix 3700 Bx2, 1.6 GHz, NUMALink SGI | 2048 | 2005 | 11.81 | 13.11 |
| 76 | Wright-Patterson Air Force Base/DoD ASC United States | SGI Altix 3700 Bx2, 1.6 GHz, NUMALink SGI | 2048 | 2003 | 11.65 | 13.11 |
| 77 | SARA (Stichting Academisch Rekencentrum) Netherlands | Huygens - eServer pSeries 575, p5+ 1.9 GHz, Infiniband IBM | 1920 | 2007 | 11.49 | 14.59 |
| 78 | NCAR (National Center for Atmospheric Research) United States | blueice - eServer pSeries p5 575 1.9 GHz IBM | 1696 | 2006 | 11.08 | 12.89 |
| 79 | Technische Universitaet Dresden Germany | Deimos - Opteron dual core 2.6 GHz, Infiniband Linux Networx | 2576 | 2007 | 10.88 | 13.40 |
| 80 | Semiconductor Company (O) United Kingdom | Cluster Platform 3000 BL460c, Xeon 51xx 3.0GHz, Infiniband Hewlett-Packard | 1392 | 2007 | 10.86 | 16.70 |
| 81 | Intel United States | Endeavor - Intel Cluster, Xeon 3.0 GHz dual core, Infiniband Intel | 1140 | 2007 | 10.77 | 13.68 |
| 82 | US Army Research Laboratory (ARL) United States | John Von Neumann - LNX Cluster, Xeon 3.6 GHz, Myrinet Linux Networx | 2048 | 2005 | 10.65 | 14.75 |
| 83 | Energy Company (G) Malaysia | HP DL140, Xeon 53xx 2.33GHz, GigEthernet Hewlett-Packard | 2048 | 2007 | 10.51 | 19.11 |
| 84 | Energy Company (G) Malaysia | HP DL140, Xeon 53xx 2.33GHz, GigEthernet Hewlett-Packard | 2048 | 2007 | 10.51 | 19.11 |
| 85 | Logistic Services (D) Germany | Cluster Platform 3000 BL460c, Xeon 51xx 3.0GHz, GigEthernet Hewlett-Packard | 1336 | 2007 | 10.42 | 16.03 |
| 86 | Center for Computational Science, University of Tsukuba Japan | PACS-CS, low voltage Xeon 2.8 GHz, 3D Hyper-Crossbar Hitachi/Fujitsu | 2560 | 2006 | 10.35 | 14.34 |
| 87 | China Meteorological Administration China | eServer pSeries 655 (1.7 GHz Power4+) IBM | 3200 | 2005 | 10.31 | 21.76 |
| 88 | Naval Oceanographic Office (NAVOCEANO) United States | eServer pSeries 655 (1.7 GHz Power4+) IBM | 2944 | 2004 | 10.31 | 20.02 |
| 89 | NNSA/Sandia National Laboratories United States | Razor - PowerEdge 1950, 3 GHz, Voltaire Infiniband Dell | 1120 | 2006 | 10.31 | 13.44 |
| 90 | NCSA United States | Tungsten - PowerEdge 1750, P4 Xeon 3.06 GHz, Myrinet Dell | 2500 | 2003 | 9.82 | 15.30 |
| 91 | BMW Sauber F1 Switzerland | Albert - Dalco Cluster, Intel Xeon 3.0 Ghz, Quadrics DALCO AG Switzerland | 1024 | 2006 | 9.60 | 12.29 |
| 92 | Daresbury Laboratory United Kingdom | eServer Blue Gene Solution IBM | 4096 | 2007 | 9.43 | 11.47 |
| 93 | Harvard University United States | eServer Blue Gene Solution IBM | 4096 | 2006 | 9.43 | 11.47 |
| 94 | High Energy Accelerator Research Organization /KEK Japan | KEK/BG UME - eServer Blue Gene Solution IBM | 4096 | 2006 | 9.43 | 11.47 |
| 95 | IBM - Almaden Research Center United States | eServer Blue Gene Solution IBM | 4096 | 2005 | 9.43 | 11.47 |
| 96 | IBM Research Switzerland | eServer Blue Gene Solution IBM | 4096 | 2005 | 9.43 | 11.47 |
| 97 | IBM Thomas J. Watson Research Center United States | eServer Blue Gene Solution IBM | 4096 | 2005 | 9.43 | 11.47 |
| 98 | Renaissance Computing Institute (RENCI) United States | Ocracoke - eServer Blue Gene Solution IBM | 4096 | 2007 | 9.43 | 11.47 |
| 99 | University of Canterbury New Zealand | Blue Fern - eServer Blue Gene Solution IBM | 4096 | 2007 | 9.43 | 11.47 |
| 100 | Financial DCCoD (A) United Kingdom | xSeries x3550 Cluster Xeon, 3 GHz, GigEthernet IBM | 1700 | 2007 | 9.29 | 20.40 |