TOP500 List - November 2005

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

Rpeak 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)
201 BladeCenter HS20 Cluster, Xeon EM64T 3.2 GHz - Gig-Ethernet, IBM
Semiconductor Company (C)
United States 		734 2.85 4.70 120
202 Cluster Platform 4000 DL145 Opteron 2.4 GHz GigEthernet, HPE
Defense Classified
United States 		1,024 2.80 4.92
203 eServer 326 Cluster. Opteron 2.6 GHz, GigEthernet, IBM
DCSC, University of Copenhagen
Denmark 		1,024 2.79 5.32
204 eServer, Opteron 2.6 GHz, GigEthernet, IBM
Semiconductor Company (L)
India 		1,024 2.79 5.32
205 Walton - eServer, Opteron 2.4 GHz, GigEthernet, IBM
Irish Centre for High-End Computing
Ireland 		968 2.79 4.65
206 Blade Cluster BL-20P, Pentium4 Xeon 2.8 GHz, GigEthernet, HPE
Gaming Company (B)
Taiwan 		884 2.77 4.95
207 Blade Cluster BL-20P, Pentium4 Xeon 2.8 GHz, GigEthernet, HPE
Gaming Company (B)
Taiwan 		884 2.77 4.95
208 Cluster Platform 3000 DL360G3 Xeon 3.2 GHz Myrinet, HPE
Information Management Company
United States 		800 2.76 5.12
209 eServer pSeries p5 575 1.9 GHz, IBM
Deutscher Wetterdienst
Germany 		416 2.76 3.16 67
210 eServer pSeries p5 575 1.9 GHz, IBM
Deutscher Wetterdienst
Germany 		416 2.76 3.16 67
211 BladeCenter HS20 Cluster, Xeon EM64T 3.2 GHz - Gig-Ethernet, IBM
Semiconductor Company (C)
United States 		698 2.75 4.47 114
212 Cluster Platform 3000 DL360G4 Xeon 3.4 GHz, Myrinet, HPE
Government
United States 		512 2.74 3.48
213 Cluster Platform 3000 DL360G4 Xeon 3.4 GHz, Myrinet, HPE
Government
Germany 		512 2.74 3.48
214 Cluster Platform 3000 DL360G4 Xeon 3.4 GHz, Myrinet, HPE
Government
Germany 		512 2.74 3.48
215 Cluster Platform 3000 DL360G4 Xeon 3.4 GHz, Myrinet, HPE
Government
Germany 		512 2.74 3.48
216 Cluster Platform 3000 DL360G4 Xeon 3.4 GHz, Myrinet, HPE
Sandia National Laboratories
United States 		512 2.74 3.48
217 Cluster Platform 3000 DL360G3 Xeon 3.06 GHz, GigEthernet, HPE
Saudi Aramco
Saudi Arabia 		800 2.74 4.90
218 Cluster Platform 3000 DL360G3 Xeon 3.06 GHz, GigEthernet, HPE
Saudi Aramco
Saudi Arabia 		800 2.74 4.90
219 Cluster Platform 3000 DL360G3 Xeon 3.06 GHz, GigEthernet, HPE
Saudi Aramco
Saudi Arabia 		800 2.74 4.90
220 Blade Cluster BL-20P, Pentium4 Xeon 3.06 GHz, Gig-Ethernet, HPE
Telecommunication Company
United States 		800 2.74 4.90
221 Blade Cluster BL-20P, Pentium4 Xeon 3.06 GHz, Gig-Ethernet, HPE
Telecommunication Company
United States 		800 2.74 4.90
222 Blade Cluster BL-20P, Pentium4 Xeon 3.06 GHz, Gig-Ethernet, HPE
Telecommunication Company
United States 		800 2.74 4.90
223 Blade Cluster BL-20P, Pentium4 Xeon 3.06 GHz, Gig-Ethernet, HPE
Telecommunication Company
United States 		800 2.74 4.90
224 pSeries 690 Turbo 1.3GHz, IBM
Max-Planck-Gesellschaft MPI/IPP
Germany 		1,024 2.73 5.32
225 Lightning Bolt #7 - Opteron 1.8 GHz dual core, Myrinet, Linux Networx
Los Alamos National Laboratory
United States 		1,024 2.73 3.69
226 IITAC - eServer Cluster, Opteron 2.4 GHz, Infiniband, IBM
Trinity College Dublin
Ireland 		712 2.72 3.41
227 Cluster Platform 3000 DL360G3 Xeon 2.8 GHz GigEthernet, HPE
Government
United States 		912 2.70 5.11
228 BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet, IBM
Semiconductor Company (C)
United States 		736 2.70 5.30 120
229 Cluster Platform 3000 DL360G3 Xeon 3.2 GHz Myrinet, HPE
Government
United States 		640 2.69 4.10
230 BladeCenter HS20 Cluster, Xeon EM64T 3.2 GHz - Gig-Ethernet, IBM
Semiconductor Company (C)
United States 		680 2.69 4.35 111
231 xSeries x336 Cluster Xeon EM64T 3.6 GHz - Gig-Ethernet, IBM
Semiconductor Company (F)
India 		730 2.68 5.26
232 BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet, IBM
Semiconductor Company (C)
United States 		722 2.65 5.20 118
233 Blade Cluster BL-20P, Pentium4 Xeon 3.06 GHz, HPE
Bank (I)
United Kingdom 		760 2.60 4.65
234 BladeCenter HS20 Cluster, Xeon EM64T 3.2 GHz - Gig-Ethernet, IBM
US Navy classified
United States 		652 2.59 4.17 106
235 BladeCenter HS20 Cluster, Xeon EM64T 3.2 GHz - Gig-Ethernet, IBM
US Navy classified
United States 		652 2.59 4.17 106
236 BladeCenter HS20 Cluster, Xeon EM64T 3.2 GHz - Gig-Ethernet, IBM
US Navy classified
United States 		652 2.59 4.17 106
237 Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz, GigEthernet, HPE
Financial Institution (F)
Australia 		720 2.58 4.61
238 Blade Cluster BL-20P, Pentium4 Xeon 3.6 GHz, GigEthernet, HPE
Financial Institution (G)
Australia 		640 2.58 4.61
239 Blade Cluster BL-20P, Pentium4 Xeon 3.6 GHz, GigEthernet, HPE
Financial Institution (G)
Australia 		640 2.58 4.61
240 pSeries 690 Turbo 1.3GHz, IBM
Environment Canada
Canada 		960 2.56 4.99
241 Cluster Platform 6000 rx5670-4x256, Itanium2 1.3 GHz, GigE, HPE
Energy Company (D)
United States 		1,024 2.56 5.32
242 xSeries x336 Cluster Xeon EM64T 3.6 GHz - Gig-Ethernet, IBM
Semiconductor Company (D)
Israel 		694 2.54 5.00
243 xSeries x336 Cluster Xeon EM64T 3.6 GHz - Gig-Ethernet, IBM
Semiconductor Company (D)
Israel 		694 2.54 5.00
244 BladeCenter HS20 Cluster, Xeon EM64T 3.2 GHz - Gig-Ethernet, IBM
Semiconductor Company (C)
United States 		636 2.54 4.07 104
245 xSeries x336 Cluster Xeon EM64T 3.6 GHz - Gig-Ethernet, IBM
Semiconductor Company (D)
Israel 		692 2.54 4.98
246 xSeries x336 Cluster Xeon EM64T 3.6 GHz - Gig-Ethernet, IBM
Semiconductor Company (D)
Israel 		692 2.54 4.98
247 xSeries x336 Cluster Xeon EM64T 3.6 GHz - Gig-Ethernet, IBM
Semiconductor Company (D)
Israel 		692 2.54 4.98
248 BladeCenter HS20 Cluster, Xeon EM64T 3.4 GHz - Gig-Ethernet, IBM
Sinopec
China 		692 2.54 4.71 113
249 BladeCenter HS20 Cluster, Xeon EM64T 3.4 GHz - Gig-Ethernet, IBM
Sinopec
China 		692 2.54 4.71 113
250 BladeCenter HS20 Cluster, Xeon EM64T 3.2 GHz - Gig-Ethernet, IBM
Semiconductor Company (D)
Israel 		634 2.53 4.06 103
251 xSeries x336 Cluster, Xeon EM64T 3.2 GHz, GigEthernet, IBM
Semiconductor Company (D)
Israel 		634 2.53 4.06
252 xSeries Xeon 3.06 GHz - Gig-Ethernet, IBM
PGS
Australia 		672 2.52 4.11
253 eServer pSeries 655 (1.5 GHz Power4+), IBM
University of Alaska - Arctic Region Supercomputing Center
United States 		672 2.51 4.03
254 BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet, IBM
Semiconductor Company (C)
United States 		628 2.51 4.52 102
255 Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz, GigEthernet, HPE
Financial Institution (H)
Australia 		700 2.50 4.48
256 Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz, GigEthernet, HPE
Financial Institution (H)
Australia 		700 2.50 4.48
257 BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet, IBM
Semiconductor Company (C)
United States 		616 2.46 4.44 100
258 BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet, IBM
Semiconductor Company (C)
United States 		616 2.46 4.44 100
259 BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet, IBM
Semiconductor Company (C)
United States 		616 2.46 4.44 100
260 BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet, IBM
Semiconductor Company (C)
United States 		616 2.46 4.44 100
261 BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet, IBM
Semiconductor Company (C)
United States 		616 2.46 4.44 100
262 BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet, IBM
Semiconductor Company (C)
United States 		616 2.46 4.44 100
263 BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet, IBM
Semiconductor Company (C)
United States 		616 2.46 4.44 100
264 BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet, IBM
Semiconductor Company (C)
United States 		616 2.46 4.44 100
265 BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet, IBM
Semiconductor Company (C)
United States 		616 2.46 4.44 100
266 eServer, Opteron 2.6 GHz, GigEthernet, IBM
Manufacturing Company
France 		798 2.42 4.15
267 Blade Cluster BL-20P, Pentium4 Xeon 3.6 GHz, GigEthernet, HPE
Wellpoint
United States 		600 2.41 4.32
268 BladeCenter HS20 Cluster, Xeon EM64T 3.2 GHz - Gig-Ethernet, IBM
The Wellcome Trust Sanger Institute
United Kingdom 		600 2.40 3.84 98
269 Blade Cluster BL-25P, Opteron 2.4 GHz, GigEthernet, HPE
Financial Institution (J)
United Kingdom 		896 2.40 4.30
270 Blade Cluster BL-25P, Opteron 2.4 GHz, GigEthernet, HPE
Financial Institution (J)
United Kingdom 		896 2.40 4.30
271 xSeries Xeon 3.06 GHz - Gig-E, IBM
Digital Media Company (C)
United Kingdom 		640 2.40 3.92
272 Cluster Platform 3000 DL360 Xeon 2.8 GHz GigEthernet, HPE
Defense Classified
United States 		840 2.40 4.70
273 BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet, IBM
Semiconductor Company (C)
United States 		652 2.39 4.69 106
274 BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet, IBM
Semiconductor Company (C)
United States 		652 2.39 4.69 106
275 BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet, IBM
Semiconductor Company (C)
United States 		652 2.39 4.69 106
276 ASCI Red, Intel
Sandia National Laboratories
United States 		9,632 2.38 3.21
277 Lisa - PowerEdge 1850, 3.4 GHz, Infiniband, DELL
SARA (Stichting Academisch Rekencentrum)
Netherlands 		544 2.37 3.74
278 Cray XD1, 2.2 GHz, Cray/HPE
Rice University
United States 		668 2.35 2.94
279 SGI Altix 1.3 GHz, HPE
CSAR at the University of Manchester
United Kingdom 		512 2.34 2.66
280 Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz, GigEthernet, HPE
Bank (K)
Belgium 		650 2.33 4.16
281 Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz, GigEthernet, HPE
Bank (K)
Belgium 		650 2.33 4.16
282 BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet, IBM
Sinopec
China 		576 2.31 4.15 94
283 pSeries 690 Turbo 1.3GHz, IBM
DOE/SC/Oak Ridge National Laboratory
United States 		864 2.31 4.49
284 eServer, Opteron 2.0 GHz, Myrinet, IBM
Automotive Manufacturer (F)
Italy 		768 2.31 3.07
285 xSeries Xeon 3.06 GHz, Myrinet, IBM
Sandia National Laboratories
United States 		512 2.27 3.13
286 Red RoSE Cluster - Precision 470 Cluster, 3.6 GHz, Infiniband, DELL
Sandia National Laboratories
United States 		592 2.21 4.26
287 SuperMike - P4 Xeon 1.8 GHz - Myrinet, Atipa Technology
Louisiana State University
United States 		1,024 2.21 3.69
288 Flash - Opteron 2 GHz, Myrinet, Linux Networx
Los Alamos National Laboratory
United States 		764 2.18 3.06
289 Intel Cluster, Xeon 3.2 GHz dual core, Infiniband, Intel
Intel
United States 		480 2.18 3.07
290 Cray XT3, 2.4 GHz, Cray/HPE
Government
United States 		544 2.17 2.61
291 AlphaServer SC45, 1 GHz, HPE
NASA/Goddard Space Flight Center
United States 		1,392 2.16 2.78
292 BladeCenter HS20 Cluster, Xeon EM64T 3.2 GHz - Gig-Ethernet, IBM
Semiconductor Company (C)
United States 		534 2.16 3.42 87
293 Cluster Platform 3000 DL140G2 Xeon 3.6 GHz Infiniband, HPE
Institute of Genomics and Integrative Biology
India 		576 2.16 4.15
294 SX-6/248M31 (typeE, 1.778ns), NEC
Meteorological Research Institute, Japan Meteorological Agency
Japan 		248 2.15 2.23
295 Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz, HPE
Financial Institution (K)
United States 		600 2.15 3.84
296 Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz, HPE
Telecommunication Company
United States 		600 2.15 3.84
297 Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz, HPE
Telecommunication Company
United States 		600 2.15 3.84
298 Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz, HPE
Telecommunication Company
United States 		600 2.15 3.84
299 Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz, HPE
Telecommunication Company
United States 		600 2.15 3.84
300 Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz, HPE
Telecommunication Company
United States 		600 2.15 3.84