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TOP500 List - June 2005

R_max and R_peak values are in TFlop/s. For more details about other fields, check the TOP500 description.

R_peak values are calculated using the advertised clock rate of the CPU. For the efficiency of the systems you should take into account the Turbo CPU clock rate where it applies.

Rank	System	Cores	Rmax (TFlop/s)	Rpeak (TFlop/s)	Power (kW)
1	BlueGene/L - eServer Blue Gene Solution, IBM DOE/NNSA/LLNL United States	65,536	136.80	183.50	716
2	BGW - eServer Blue Gene Solution, IBM IBM Thomas J. Watson Research Center United States	40,960	91.29	114.69	448
3	Columbia - SGI Altix 1.5 GHz, Voltaire Infiniband, HPE NASA/Ames Research Center/NAS United States	10,160	51.87	60.96
4	Earth-Simulator, NEC Japan Agency for Marine-Earth Science and Technology Japan	5,120	35.86	40.96	3,200
5	MareNostrum - JS20 Cluster, PPC 970, 2.2 GHz, Myrinet, IBM Barcelona Supercomputing Center Spain	4,800	27.91	42.14
6	Stella - eServer Blue Gene Solution, IBM ASTRON/University Groningen Netherlands	12,288	27.45	34.41	134
7	Thunder - Intel Itanium2 Tiger4 1.4GHz - Quadrics, California Digital Corporation Lawrence Livermore National Laboratory United States	4,096	19.94	22.94
8	Blue Protein - eServer Blue Gene Solution, IBM Computational Biology Research Center, AIST Japan	8,192	18.20	22.94	89
9	eServer Blue Gene Solution, IBM Ecole Polytechnique Federale de Lausanne Switzerland	8,192	18.20	22.94	89
10	Red Storm, Cray XT3, 2.0 GHz, Cray/HPE Sandia National Laboratories United States	5,000	15.25	20.00
11	Cray XT3, 2.4 GHz, Cray/HPE DOE/SC/Oak Ridge National Laboratory United States	3,748	14.17	17.99
12	ASCI Q - AlphaServer SC45, 1.25 GHz, HPE Los Alamos National Laboratory United States	8,192	13.88	20.48
13	eServer pSeries p5 575 1.9 GHz, IBM Lawrence Livermore National Laboratory United States	2,048	13.09	15.56	334
14	System X - 1100 Dual 2.3 GHz Apple XServe/Mellanox Infiniband 4X/Cisco GigE, Self-made Virginia Tech United States	2,200	12.25	20.24
15	SGI Altix 3700 Bx2, 1.6 GHz, NUMALink, HPE Air Force Research Laboratory United States	2,048	11.81	13.11
16	SGI Altix 3700 Bx2, 1.6 GHz, NUMALink, HPE Japan Atomic Energy Research Institute Japan	2,048	11.81	13.11
17	BlueGene/L DD1 Prototype (0.5GHz PowerPC 440 w/Custom), IBM/ LLNL IBM Rochester United States	8,192	11.68	16.38
18	eServer pSeries 655 (1.7 GHz Power4+), IBM China Meteorological Administration China	3,200	10.31	21.76
19	eServer pSeries 655 (1.7 GHz Power4+), IBM Naval Oceanographic Office - NAVO DSRC United States	2,944	10.31	20.02
20	Tungsten - PowerEdge 1750, P4 Xeon 3.06 GHz, Myrinet, DELL EMC NCSA United States	2,500	9.82	15.30
21	eServer Blue Gene Solution, IBM IBM - Almaden Research Center United States	4,096	9.36	11.47	44
22	eServer Blue Gene Solution, IBM IBM - Deep Computing Capacity on Demand Center United States	4,096	9.36	11.47	44
23	eServer Blue Gene Solution, IBM/ LLNL IBM Thomas J. Watson Research Center United States	4,096	9.36	11.47	44
24	eServer pSeries 690 (1.9 GHz Power4+), IBM ECMWF United Kingdom	2,176	9.24	16.54
25	eServer pSeries 690 (1.9 GHz Power4+), IBM ECMWF United Kingdom	2,176	9.24	16.54
26	SGI Altix 3700 Bx2, 1.6 GHz, NUMALink, HPE National Computational Infrastructure (NCI Australia) Australia	1,536	8.97	9.83
27	SX8/576M72, NEC HWW/Universitaet Stuttgart Germany	576	8.92	9.22
28	John Von Neumann - LNX Cluster, Xeon 3.4 GHz, Myrinet, Linux Networx US Army Research Laboratory (ARL) United States	2,048	8.77	13.93
29	RIKEN Super Combined Cluster, Fujitsu Institute of Physical and Chemical Research (RIKEN) Japan	2,048	8.73	12.53
30	Mpp2 - Cluster Platform 6000 rx2600 Itanium2 1.5 GHz, Quadrics, HPE DOE/SC/Pacific Northwest National Laboratory United States	1,936	8.63	11.62
31	Dawning 4000A, Opteron 2.2 GHz, Myrinet, Dawning Shanghai Supercomputer Center China	2,560	8.06	11.26
32	Lightning - Opteron 2 GHz, Myrinet, Linux Networx Los Alamos National Laboratory United States	2,816	8.05	11.26
33	BigBen - Cray XT3, 2.4 GHz, Cray/HPE Pittsburgh Supercomputing Center United States	2,060	7.94	9.89
34	MCR Linux Cluster Xeon 2.4 GHz - Quadrics, Linux Networx/Quadrics Lawrence Livermore National Laboratory United States	2,304	7.63	11.06
35	ASCI White, SP Power3 375 MHz, IBM Lawrence Livermore National Laboratory United States	8,192	7.30	12.29
36	Seaborg - SP Power3 375 MHz 16 way, IBM DOE/SC/LBNL/NERSC United States	6,656	7.30	9.98
37	HPC - Sun Fire V60, IBM xServer,2.8-3.2 GHz, Myrinet, IBM, Sun, Myricom University of Southern California United States	2,640	7.29	14.78
38	TeraGrid, Itanium2 1.3/1.5 GHZ, Myrinet, IBM NCSA United States	1,776	7.21	10.26
39	eServer Opteron 2.2 GHz. Myrinet, IBM US Army Research Laboratory (ARL) United States	2,320	7.18	10.21
40	Mp - PowerEdge SC1425 3.6 GHz- Infiniband, DELL EMC University of Sherbrooke Canada	1,152	6.89	8.29
41	PRIMEPOWER HPC2500 (2.08 GHz), Fujitsu Nagoya University Japan	1,664	6.86	13.84
42	xSeries Cluster Xeon 2.4 GHz - Quadrics, IBM/Quadrics Lawrence Livermore National Laboratory United States	1,920	6.59	9.22
43	DataStar - eServer pSeries 655/690 (1.5/1.7 Ghz Power4+), IBM UCSD/San Diego Supercomputer Center United States	1,696	6.38	10.41
44	Lilac - xSeries x335 Cluster, Xeon 3.06 GHz, Quadrics, IBM Lawrence Livermore National Laboratory United States	1,540	6.23	9.43
45	eServer pSeries 690 (1.7 GHz Power4+), IBM HPCx United Kingdom	1,600	6.19	10.88
46	AIST Super Cluster P-32 - AIST Super Cluster P-32, Opteron 2.0 GHz, Myrinet, IBM Grid Technology Research Center, AIST Japan	2,200	6.16	8.80
47	Tungsten 2 - PowerEdge 1850, 3.6 GHz, Infiniband, DELL EMC NCSA United States	1,024	6.12	7.37
48	SGI Altix 3700 Bx2, 1.6 GHz, NUMALink, HPE NCSA United States	1,024	6.03	6.55
49	eServer pSeries p5 575 1.9 GHz, IBM Lawrence Livermore National Laboratory United States	896	5.92	6.81	146
50	Cray X1, Cray/HPE DOE/SC/Oak Ridge National Laboratory United States	504	5.89	6.45
51	eServer BladeCenter JS20 (PowerPC970 2.2 GHz), Myrinet, IBM Seoul National University South Korea	968	5.62	8.52
52	JUMP - eServer pSeries 690 (1.7 GHz Power4+), IBM Forschungszentrum Juelich (FZJ) Germany	1,312	5.57	8.92
53	Marylou4 - PowerEdge 1855, 3.6 GHz, GigEthernet, DELL EMC Brigham Young University United States	1,260	5.44	9.07
54	Topdawg - PowerEdge 1850, 3.2 GHz, Infiniband, DELL EMC University of Oklahoma United States	1,024	5.44	6.55
55	PRIMEPOWER HPC2500 (1.3 GHz), Fujitsu National Aerospace Laboratory of Japan Japan	2,304	5.41	11.98
56	MVS-15000BM, eServer BladeCenter JS20 (PowerPC970 2.2 GHz), Myrinet, IBM Joint Supercomputer Center Russia	924	5.36	8.13
57	Cray XT3, 2.6 GHz, Cray/HPE Swiss Scientific Computing Center (CSCS) Switzerland	1,100	4.78	5.72
58	eServer Blue Gene Solution, IBM Boston University United States	2,048	4.71	5.73	22
59	eServer Blue Gene Solution, IBM DOE/SC/Argonne National Laboratory United States	2,048	4.71	5.73	22
60	eServer Blue Gene Solution, IBM Forschungszentrum Juelich (FZJ) Germany	2,048	4.71	5.73	22
61	eServer Blue Gene Solution, IBM NIWS Co, Ltd Japan	2,048	4.71	5.73	22
62	eServer Blue Gene Solution, IBM National Center for Atmospheric Research (NCAR) United States	2,048	4.71	5.73	22
63	Intimidata - eServer Blue Gene Solution, IBM UCSD/San Diego Supercomputer Center United States	2,048	4.71	5.73	22
64	eServer Blue Gene Solution, IBM University of Edinburgh United Kingdom	2,048	4.71	5.73	22
65	Lenngren - PowerEdge 1850, 3.2 GHz, Infiniband, DELL EMC KTH - Royal Institute of Technology Sweden	886	4.70	5.67
66	Turing - XServe G5 2GHz, Myrinet, Self-made University of Illinois United States	1,024	4.56	8.19
67	PRIMEPOWER HPC2500 (1.56 GHz), Fujitsu Kyoto University Japan	1,472	4.55	9.19
68	AlphaServer SC45, 1 GHz, HPE Pittsburgh Supercomputing Center United States	3,016	4.46	6.03
69	eServer pSeries 655 (1.7 GHz Power4+), IBM NOAA R&D/ National Centers for Environmental Prediction United States	1,152	4.38	7.83
70	eServer pSeries 655 (1.7 GHz Power4+), IBM NOAA R&D/ National Centers for Environmental Prediction United States	1,152	4.38	7.83
71	Cosmos - PowerEdge 1750, P4 Xeon 3.2 GHz, Myrinet, DELL EMC Caltech/JPL United States	1,024	4.30	6.55
72	DeepComp 6800, Itanium2 1.3 GHz, QsNet, Lenovo Computer Network Information Center, Chinese Academy of Science China	1,024	4.19	5.32
73	pSeries 690 Turbo 1.3 GHz, IBM National Center for Atmospheric Research (NCAR) United States	1,600	4.18	8.32
74	lonestar - PowerEdge 1750, Pentium4 Xeon 3.2/3.06 GHz, Myrinet, Dell-Cray Texas Advanced Computing Center/Univ. of Texas United States	1,024	4.15	6.34
75	Atipa Cluster, Opteron, Myrinet, Atipa Technology DOE/Bettis Atomic Power Laboratory United States	1,090	4.04	5.23
76	Atipa Cluster, Opteron, Myrinet, Atipa Technology DOE/Knolls Atomic Power Laboratory United States	1,090	4.04	5.23
77	AlphaServer SC45, 1 GHz, HPE Commissariat a l'Energie Atomique (CEA) France	2,560	3.98	5.12
78	eServer pSeries 655 (1.5 GHz Power4+), IBM Lawrence Livermore National Laboratory United States	1,024	3.81	6.14
79	eServer pSeries 655 (1.5 GHz Power4+), IBM Lawrence Livermore National Laboratory United States	1,024	3.81	6.14
80	Cray X1E, Cray/HPE Korea Meteorological Administration South Korea	252	3.78	4.56
81	Cray X1E, Cray/HPE US Army HPC Research Center at NCS United States	252	3.78	4.56
82	BladeCenter HS20 Xeon 3.06 GHz, Gig-Ethernet, IBM Bank (L) United Kingdom	3,200	3.75	19.58
83	glacier - BladeCenter Xeon 3.06 GHz, Gig-Ethernet, IBM Westgrid Canada	1,680	3.75	10.28
84	BladeCenter HS20 Cluster, Xeon 3.2 GHz, GigEthernet, IBM Saudi Aramco Saudi Arabia	1,536	3.75	9.83	251
85	BladeCenter HS20 Xeon 3.06 GHz, Gig-Ethernet, IBM Credit Suisse/First Boston United Kingdom	1,500	3.75	9.18
86	BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet, IBM WETA Digital New Zealand	1,000	3.75	7.20	163
87	BladeCenter HS20 Xeon 3.06 GHz, Gig-Ethernet, IBM Digital Content Provider Australia	1,148	3.75	7.03
88	BladeCenter HS20 Cluster, Xeon EM64T 3.4 GHz - Gig-Ethernet, IBM Geoscience (B) India	1,024	3.75	6.96	167
89	xSeries Xeon 3.06 GHz - Gig-E, IBM Geoscience (C) United Kingdom	1,128	3.75	6.90
90	xSeries Xeon 3.06 GHz - Gig-E, IBM Geoscience (C) United Kingdom	1,128	3.75	6.90
91	xSeries Xeon 3.06 GHz - Gig-E, IBM Semiconductor Company (D) Israel	1,120	3.75	6.85
92	BladeCenter HS20 Cluster, Xeon 3.2 GHz, GigEthernet, IBM Telco Canada	1,036	3.75	6.63	169
93	BladeCenter HS20 Cluster, Xeon 3.2 GHz, GigEthernet, IBM Financial Services (H) United States	1,024	3.75	6.55	167
94	BladeCenter Xeon 3.06 GHz, Gig-Ethernet, IBM Bank (H) Germany	1,064	3.75	6.51
95	BladeCenter Xeon 3.06 GHz, Gig-Ethernet, IBM ConocoPhillips United States	1,056	3.75	6.46
96	xSeries Cluster Xeon 3.06 GHz - Gig-E, IBM Petroleum Company (C) Brazil	1,024	3.75	6.27
97	xSeries Cluster Xeon 3.06 GHz - Gig-E, IBM Petroleum Geo-Services United States	1,024	3.75	6.27
98	xSeries Xeon 3.06 GHz - Gig-E, IBM IBM - Deep Computing Capacity on Demand Center United States	1,000	3.75	6.12
99	bwr1 - Cluster Platform 3000 DL140G3 Xeon 3.06 GHz GigEthernet, HPE Petróleo Brasileiro S.A Brazil	1,300	3.74	7.96
100	pSeries 690 Turbo 1.3 GHz, IBM Naval Oceanographic Office - NAVO DSRC United States	1,408	3.72	7.32