| Rank | System | Cores | Rmax (GFlop/s) | Rpeak (GFlop/s) | Power (kW) | 
    
    
    
        
            | 1 | Earth-Simulator,
                 NEC Japan Agency for Marine-Earth Science and Technology
 Japan
 | 5,120 | 35,860.00 | 40,960.00 | 3,200 | 
    
        
            | 2 | ASCI Q - AlphaServer SC45, 1.25 GHz,
                 HPE Los Alamos National Laboratory
 United States
 | 8,192 | 13,880.00 | 20,480.00 |  | 
    
        
            | 3 | MCR Linux Cluster Xeon 2.4 GHz - Quadrics,
                 Linux Networx/Quadrics Lawrence Livermore National Laboratory
 United States
 | 2,304 | 7,634.00 | 11,060.00 |  | 
    
        
            | 4 | ASCI White, SP Power3 375 MHz,
                 IBM Lawrence Livermore National Laboratory
 United States
 | 8,192 | 7,304.00 | 12,288.00 |  | 
    
        
            | 5 | Seaborg - SP Power3 375 MHz 16 way,
                 IBM DOE/SC/LBNL/NERSC
 United States
 | 6,656 | 7,304.00 | 9,984.00 |  | 
    
        
            | 6 | xSeries Cluster Xeon 2.4 GHz - Quadrics,
                 IBM/Quadrics Lawrence Livermore National Laboratory
 United States
 | 1,920 | 6,586.00 | 9,216.00 |  | 
    
        
            | 7 | PRIMEPOWER HPC2500 (1.3 GHz),
                 Fujitsu National Aerospace Laboratory of Japan
 Japan
 | 2,304 | 5,406.00 | 11,980.00 |  | 
    
        
            | 8 | Cluster Platform 6000 rx2600 Itanium2 1 GHz Cluster - Quadrics,
                 HPE DOE/SC/Pacific Northwest National Laboratory
 United States
 | 1,540 | 4,881.00 | 6,160.00 |  | 
    
        
            | 9 | AlphaServer SC45, 1 GHz,
                 HPE Pittsburgh Supercomputing Center
 United States
 | 3,016 | 4,463.00 | 6,032.00 |  | 
    
        
            | 10 | AlphaServer SC45, 1 GHz,
                 HPE Commissariat a l'Energie Atomique (CEA)
 France
 | 2,560 | 3,980.00 | 5,120.00 |  | 
    
        
            | 11 | Aspen Systems, Dual Xeon 2.2 GHz - Myrinet2000,
                 HPTi Forecast Systems Laboratory - NOAA
 United States
 | 1,536 | 3,337.00 | 6,758.00 |  | 
    
        
            | 12 | pSeries 690 Turbo 1.3GHz,
                 IBM HPCx
 United Kingdom
 | 1,280 | 3,241.00 | 6,656.00 |  | 
    
        
            | 13 | pSeries 690 Turbo 1.3GHz,
                 IBM National Center for Atmospheric Research (NCAR)
 United States
 | 1,216 | 3,164.00 | 6,323.00 |  | 
    
        
            | 14 | pSeries 690 Turbo 1.3GHz,
                 IBM Naval Oceanographic Office - NAVO DSRC
 United States
 | 1,184 | 3,160.00 | 6,156.80 |  | 
    
        
            | 15 | pSeries 690 Turbo 1.3GHz,
                 IBM ECMWF
 United Kingdom
 | 960 | 2,560.00 | 4,992.00 |  | 
    
        
            | 16 | pSeries 690 Turbo 1.3GHz,
                 IBM ECMWF
 United Kingdom
 | 960 | 2,560.00 | 4,992.00 |  | 
    
        
            | 17 | ASCI Red,
                 Intel Sandia National Laboratories
 United States
 | 9,632 | 2,379.00 | 3,207.00 |  | 
    
        
            | 18 | pSeries 690 Turbo 1.3GHz,
                 IBM DOE/SC/Oak Ridge National Laboratory
 United States
 | 864 | 2,310.00 | 4,492.80 |  | 
    
        
            | 19 | SuperMike - P4 Xeon 1.8 GHz - Myrinet,
                 Atipa Technology Louisiana State University
 United States
 | 1,024 | 2,207.00 | 3,686.40 |  | 
    
        
            | 20 | AlphaServer SC45, 1 GHz,
                 HPE NASA/Goddard Space Flight Center
 United States
 | 1,392 | 2,164.00 | 2,784.00 |  | 
    
        
            | 21 | ASCI Blue-Pacific SST, IBM SP 604e,
                 IBM Lawrence Livermore National Laboratory
 United States
 | 5,808 | 2,144.00 | 3,856.50 |  | 
    
        
            | 22 | pSeries 690 Turbo 1.3GHz,
                 IBM US Army Research Laboratory (ARL)
 United States
 | 800 | 2,140.00 | 4,160.00 |  | 
    
        
            | 23 | SP Power3 375 MHz 16 way,
                 IBM AWE
 United Kingdom
 | 1,920 | 2,106.00 | 2,880.00 |  | 
    
        
            | 24 | pSeries 690 Turbo 1.3GHz,
                 IBM Max-Planck-Gesellschaft MPI/IPP
 Germany
 | 768 | 2,050.00 | 3,993.60 |  | 
    
        
            | 25 | Joplin - PowerEdge 2650 Cluster P4 Xeon 2.4 GHz - Myrinet,
                 DELL University at Buffalo, SUNY, Center for Computational Res.
 United States
 | 600 | 2,004.00 | 2,880.00 |  | 
    
        
            | 26 | pSeries 690 Turbo 1.3GHz,
                 IBM NOAA R&D/ National Centers for Environmental Prediction
 United States
 | 704 | 1,849.00 | 3,660.80 |  | 
    
        
            | 27 | pSeries 690 Turbo 1.3GHz,
                 IBM NOAA R&D/ National Centers for Environmental Prediction
 United States
 | 704 | 1,849.00 | 3,660.80 |  | 
    
        
            | 28 | SR8000/MPP,
                 Hitachi University of Tokyo
 Japan
 | 1,152 | 1,709.10 | 2,074.00 |  | 
    
        
            | 29 | SR8000-F1/168,
                 Hitachi Leibniz Rechenzentrum
 Germany
 | 168 | 1,653.00 | 2,016.00 |  | 
    
        
            | 30 | ASCI Blue Mountain,
                 HPE Los Alamos National Laboratory
 United States
 | 6,144 | 1,608.00 | 3,072.00 |  | 
    
        
            | 31 | TeraGrid Cluster Itanium 2 1 GHz - Myrinet,
                 IBM NCSA
 United States
 | 512 | 1,593.00 | 2,048.00 |  | 
    
        
            | 32 | Vplant Cluster P4 XEON 2.4/2.0 GHz - Myrinet,
                 DELL Sandia National Laboratories
 United States
 | 660 | 1,504.00 | 2,963.00 |  | 
    
        
            | 33 | SX-6/192M24,
                 NEC DKRZ - Deutsches Klimarechenzentrum
 Germany
 | 192 | 1,484.00 | 1,536.00 |  | 
    
        
            | 34 | SP Power3 375 MHz,
                 IBM Naval Oceanographic Office - NAVO DSRC
 United States
 | 1,336 | 1,417.00 | 2,004.00 |  | 
    
        
            | 35 | SP Power3 375 MHz 16 way,
                 IBM Deutscher Wetterdienst
 Germany
 | 1,280 | 1,404.00 | 1,920.00 |  | 
    
        
            | 36 | pSeries 690 Turbo 1.3GHz,
                 IBM CINECA
 Italy
 | 512 | 1,384.00 | 2,662.40 |  | 
    
        
            | 37 | SP Power3 375 MHz 16 way,
                 IBM National Center for Atmospheric Research (NCAR)
 United States
 | 1,260 | 1,382.00 | 1,890.00 |  | 
    
        
            | 38 | PowerRACK-HX dual Xeon 2.4 GHz - SMC GigE,
                 Self-made University of Toronto
 Canada
 | 512 | 1,202.00 | 2,457.00 |  | 
    
        
            | 39 | SP Power3 375 MHz 16 way,
                 IBM Lawrence Livermore National Laboratory
 United States
 | 1,088 | 1,193.00 | 1,632.00 |  | 
    
        
            | 40 | SX-5/128M8 3.2ns,
                 NEC Osaka University
 Japan
 | 128 | 1,192.00 | 1,280.00 |  | 
    
        
            | 41 | SP Power3 375 MHz,
                 IBM NOAA R&D/ National Centers for Environmental Prediction
 United States
 | 1,104 | 1,179.00 | 1,656.00 |  | 
    
        
            | 42 | pSeries 690 1.1GHz,
                 IBM CSC (Center for Scientific Computing)
 Finland
 | 512 | 1,170.00 | 2,253.00 |  | 
    
        
            | 43 | pSeries 690 1.1GHz,
                 IBM Florida State University
 United States
 | 512 | 1,170.00 | 2,253.00 |  | 
    
        
            | 44 | T3E1200,
                 Cray/HPE Government
 United States
 | 1,900 | 1,166.00 | 2,280.00 |  | 
    
        
            | 45 | T3E1200/900,
                 Cray/HPE ERDC DSRC
 United States
 | 1,792 | 1,166.00 | 1,999.00 |  | 
    
        
            | 46 | Cluster Platform 6000 rx5670 Itanium2 900 MHz Cluster - GigE,
                 HPE Energy Company (D)
 United States
 | 545 | 1,090.00 | 1,962.00 |  | 
    
        
            | 47 | pSeries 690 Turbo 1.3GHz,
                 IBM Nestec S.A.
 Switzerland
 | 400 | 1,081.00 | 2,080.00 |  | 
    
        
            | 48 | PowerEdge 1750, P4 Xeon 3.06 GHz, GigE,
                 DELL Compagnie Generale de Geophysique (CGG)
 United States
 | 1,024 | 1,068.00 | 6,266.88 |  | 
    
        
            | 49 | PowerEdge 2650 Cluster P4 Xeon 2.4 GHz/MSWindows - GigE,
                 DELL Cornell Theory Center
 United States
 | 384 | 1,068.00 | 1,843.20 |  | 
    
        
            | 50 | AVIDD-B+AVIDD-I - xSeries Cluster Xeon 2.4 GHz - Myrinet&Force10,
                 IBM Indiana University
 United States
 | 384 | 1,058.00 | 1,843.00 |  | 
    
        
            | 51 | DeepComp 1800 - P4 Xeon 2 GHz - Myrinet,
                 Lenovo Academy of Mathematics and System Science
 China
 | 512 | 1,046.00 | 2,048.00 |  | 
    
        
            | 52 | pSeries 690 Turbo 1.3GHz,
                 IBM Applera/Celera Genomics
 United States
 | 384 | 1,038.00 | 1,996.80 |  | 
    
        
            | 53 | pSeries 690 Turbo 1.3GHz,
                 IBM HLRN at Universitaet Hannover / RRZN
 Germany
 | 384 | 1,038.00 | 1,996.80 |  | 
    
        
            | 54 | pSeries 690 Turbo 1.3GHz,
                 IBM HLRN at ZIB/Konrad Zuse-Zentrum Berlin
 Germany
 | 384 | 1,038.00 | 1,996.80 |  | 
    
        
            | 55 | Netfinity Cluster P4 Xeon 2 GHz - Myrinet,
                 IBM University of Southern California
 United States
 | 512 | 1,028.00 | 2,048.00 |  | 
    
        
            | 56 | Pegasus P4 Xeon Cluster 2.2/2.4/2.8 GHz - Giganet - MSWindows,
                 Self-made Seoul National University
 South Korea
 | 400 | 1,011.00 | 1,843.00 |  | 
    
        
            | 57 | Jazz - LCRC Xeon 2.4 GHz - Myrinet,
                 Linux Networx DOE/SC/Argonne National Laboratory
 United States
 | 361 | 1,007.00 | 1,732.80 |  | 
    
        
            | 58 | AlphaServer SC40, 833 MHz,
                 HPE Japan Atomic Energy Research Institute
 Japan
 | 812 | 1,007.00 | 1,352.80 |  | 
    
        
            | 59 | CPlant/Ross Cluster,
                 Self-made Sandia National Laboratories
 United States
 | 1,800 | 996.90 | 1,782.50 |  | 
    
        
            | 60 | SX-6/128M16,
                 NEC NEC Fuchu Plant
 Japan
 | 128 | 982.00 | 1,024.00 |  | 
    
        
            | 61 | Pentium Xeon Cluster 2.2 GHz - SCI 3D,
                 Self-made National Supercomputer Centre (NSC)
 Sweden
 | 400 | 960.40 | 1,760.00 |  | 
    
        
            | 62 | SP Power3 375 MHz 8 way,
                 IBM UCSD/San Diego Supercomputer Center
 United States
 | 1,152 | 929.00 | 1,728.00 |  | 
    
        
            | 63 | SR8000-F1/100,
                 Hitachi High Energy Accelerator Research Organization /KEK
 Japan
 | 100 | 917.00 | 1,200.00 |  | 
    
        
            | 64 | xSeries Cluster Xeon 2.4 GHz - Gig-E,
                 IBM Compagnie Generale de Geophysique (CGG)
 United Kingdom
 | 1,100 | 894.90 | 5,280.00 |  | 
    
        
            | 65 | xSeries Cluster Xeon 2.4 GHz - Gig-E,
                 IBM Arizona State University/TGEN
 United States
 | 1,048 | 894.90 | 5,030.40 |  | 
    
        
            | 66 | xSeries Cluster Xeon 2.4 GHz - Gig-E,
                 IBM TotalFinaElf
 France
 | 1,024 | 894.90 | 4,915.20 |  | 
    
        
            | 67 | xSeries Cluster Xeon 2.4 GHz - Gig-E,
                 IBM SG SGBI
 France
 | 968 | 894.90 | 4,646.40 |  | 
    
        
            | 68 | xSeries Cluster Xeon 2.4 GHz - Gig-E,
                 IBM GX Technology
 United States
 | 880 | 894.90 | 4,224.00 |  | 
    
        
            | 69 | T3E1200,
                 Cray/HPE US Army HPC Research Center at NCS
 United States
 | 1,084 | 892.00 | 1,300.80 |  | 
    
        
            | 70 | SP Power3 375 MHz 16 way,
                 IBM Maui High-Performance Computing Center (MHPCC)
 United States
 | 812 | 891.00 | 1,218.00 |  | 
    
        
            | 71 | pSeries 690 Turbo 1.3GHz,
                 IBM Maui High-Performance Computing Center (MHPCC)
 United States
 | 320 | 887.30 | 1,664.00 |  | 
    
        
            | 72 | LION-XL - PowerEdge 2650 Cluster P4 Xeon 2.4 GHz - Quadrics,
                 DELL Pennsylvania State University
 United States
 | 256 | 877.90 | 1,228.80 |  | 
    
        
            | 73 | SR8000/128,
                 Hitachi University of Tokyo
 Japan
 | 128 | 873.00 | 1,024.00 |  | 
    
        
            | 74 | AlphaServer SC45, 1 GHz,
                 HPE Air Force Research Laboratory
 United States
 | 512 | 862.20 | 1,024.00 |  | 
    
        
            | 75 | emerald - AlphaServer SC45, 1 GHz,
                 HPE ERDC DSRC
 United States
 | 512 | 862.20 | 1,024.00 |  | 
    
        
            | 76 | AlphaServer SC45, 1 GHz,
                 HPE Hewlett-Packard
 United States
 | 512 | 862.20 | 1,024.00 |  | 
    
        
            | 77 | ORIGIN 3000 600 MHz,
                 HPE NASA/Ames Research Center/NAS
 United States
 | 1,024 | 852.90 | 1,228.80 |  | 
    
        
            | 78 | Grendels - Grendels P4 Cluster 2.4 GHz - Myrinet,
                 Linux Networx Los Alamos National Laboratory
 United States
 | 252 | 840.50 | 1,209.60 |  | 
    
        
            | 79 | AlphaServer SC45, 1 GHz,
                 HPE National Computational Infrastructure (NCI Australia)
 Australia
 | 508 | 825.50 | 1,016.00 |  | 
    
        
            | 80 | HELICS AMD 1.4 GHz - Myrinet,
                 MEGWARE Universitaet Heidelberg - IWR
 Germany
 | 512 | 825.00 | 1,433.60 |  | 
    
        
            | 81 | T3E900,
                 Cray/HPE Government
 United States
 | 1,324 | 815.00 | 1,191.60 |  | 
    
        
            | 82 | TeraGrid Cluster Itanium 2 1 GHz - Myrinet,
                 IBM UCSD/San Diego Supercomputer Center
 United States
 | 252 | 798.30 | 1,008.00 |  | 
    
        
            | 83 | SP Power3 375 MHz,
                 IBM Charles Schwab
 United States
 | 768 | 795.00 | 1,152.00 |  | 
    
        
            | 84 | AMD AthlonMP Cluster 1.65 GHz,
                 Self-made Rutgers University, Department of Physics & Astronomy
 United States
 | 512 | 794.00 | 1,690.00 |  | 
    
        
            | 85 | SR8000-G1/64,
                 Hitachi Institute for Materials Research, Tohoku University (IMR)
 Japan
 | 64 | 790.70 | 921.60 |  | 
    
        
            | 86 | Presto III Athlon 1.6 GHz,
                 Self-made CII, Institute of Science Tokyo
 Japan
 | 486 | 788.80 | 1,555.20 |  | 
    
        
            | 87 | Cluster Platform 6000 zx6000 Itanium2 900 MHz, Myrinet,
                 HPE Ohio Supercomputer Center
 United States
 | 256 | 761.90 | 921.60 |  | 
    
        
            | 88 | Space Simulator, P4 2.53 GHz - GigEth,
                 Self-made Los Alamos National Laboratory
 United States
 | 288 | 757.10 | 1,457.00 |  | 
    
        
            | 89 | pSeries 690 Turbo 1.3GHz,
                 IBM Media & Entertainment (C)
 United States
 | 264 | 755.00 | 1,372.80 |  | 
    
        
            | 90 | SP Power3 375 MHz,
                 IBM North Carolina Supercomputing Center (NCSC)
 United States
 | 720 | 741.00 | 1,080.00 |  | 
    
        
            | 91 | pSeries 690 Turbo 1.3GHz,
                 IBM IBM
 United States
 | 256 | 736.60 | 1,331.20 |  | 
    
        
            | 92 | pSeries 690 Turbo 1.3GHz,
                 IBM IBM
 United States
 | 256 | 736.60 | 1,331.20 |  | 
    
        
            | 93 | pSeries 690 Turbo 1.3GHz,
                 IBM National Center for High Performance Computing
 Taiwan
 | 256 | 736.60 | 1,331.20 |  | 
    
        
            | 94 | pSeries 690 Turbo 1.3GHz,
                 IBM Swiss Scientific Computing Center (CSCS)
 Switzerland
 | 256 | 736.60 | 1,331.20 |  | 
    
        
            | 95 | MVS1000M EV67 667 MHz,
                 Self-made Joint Supercomputer Center
 Russia
 | 768 | 734.60 | 1,024.00 |  | 
    
        
            | 96 | VPP5000/80,
                 Fujitsu University of Tsukuba
 Japan
 | 80 | 730.00 | 768.00 |  | 
    
        
            | 97 | SP Power3 375 MHz,
                 IBM DOE/SC/Oak Ridge National Laboratory
 United States
 | 704 | 723.00 | 1,056.00 |  | 
    
        
            | 98 | DeepComp 1800 - P4 Xeon 2.4 GHz - Myrinet,
                 Lenovo LASG/Institute of Atmospheric Physics, CAS
 China
 | 256 | 711.70 | 1,228.00 |  | 
    
        
            | 99 | pSeries 690 Turbo 1.3GHz GigEth,
                 IBM NCSA
 United States
 | 384 | 708.00 | 1,996.80 |  | 
    
        
            | 100 | Longhorn - pSeries p690/p655 1.3GHz,
                 IBM Texas Advanced Computing Center/Univ. of Texas
 United States
 | 224 | 704.80 | 1,164.80 |  |