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In June 2011, 26 systems appeared in the TOP500 list.

Rank System Procs Memory(GB) Rmax (GFlops) Rpeak (GFlops) Vendor
1 K computer, SPARC64 VIIIfx 2.0GHz, Tofu interconnect 548352 N/A 8.162e+06 8.77363e+06 Fujitsu
5 TSUBAME 2.0
HP ProLiant SL390s G7 Xeon 6C X5670, Nvidia GPU, Linux/Windows		 73278 N/A 1.192e+06 2.28763e+06
38 BX900 Xeon X5570 2.93GHz , Infiniband QDR 17072 51216 191400 200080 Fujitsu
48 SGI Altix ICE 8400EX Xeon X5570 4-core 2.93 GHz, Infiniband 15360 N/A 161800 180019 SGI
68 Earth Simulator
SX-9/E/1280M160		 1280 20480 122400 131072 NEC
73 Fujitsu FX1, Quadcore SPARC64 VII 2.52 GHz, Infiniband DDR 12032 96256 110600 121282 Fujitsu
84 T2K Open Supercomputer (Todai Combined Cluster)
Hitachi opteron QC 2.3 GHz Myrinet 10G		 15104 30208 101741 138956 Hitachi
89 RIKEN Intergrated Cluster of Clusters, Xeon X5570 2.93GHz, Infiniband DDR 9048 N/A 97940 106042 Fujitsu
118 T2K Open Supercomputer
Appro Xtreme-X3 Server - Quad Opteron Quad Core 2.3 GHz, Infiniband		 10368 20416 77280 95385 Appro
126 GOSAT Research Computation Facility
Asterism ID318, Intel Xeon E5530, NVIDIA C2050, Infiniband		 5760 N/A 75350 177120
127 HP DL160 Cluster G6, Xeon X5650 2.66 GHz, GigE 13620 N/A 74742.3 144917 HP
131 Hitachi SR16000 Model XM1/108, Power7 3.3Ghz, Infiniband 3456 N/A 73350 91238.4 Hitachi
162 xSeries x3650M3, Xeon X56xx 2.66 GHz, GigE 11640 N/A 65591.7 123850 IBM
168 xSeries x3650M2 Cluster, Xeon QC E55xx 2.26 Ghz, GigE 14432 N/A 64596 130869 IBM
197 Plasma Simulator
Hitachi SR16000 Model L2/128, Power6 4.7Ghz, Infiniband		 4096 164482 56650 77004.8 Hitachi
204 xSeries x3650M2 Cluster, Xeon QC E55xx 2.26 Ghz, GigE 11640 N/A 55944.8 105552 IBM
225 xSeries x3650M3, Xeon X56xx 2.53 GHz, GigE 9732 N/A 54840.2 98487.8 IBM
226 xSeries x3650M3, Xeon X56xx 2.53 GHz, GigE 9732 N/A 54840.2 98487.8 IBM
227 xSeries x3650M3, Xeon X56xx 2.53 GHz, GigE 9732 N/A 54840.2 98487.8 IBM
230 SHIROKANE
SunBlade x6250, Xeon E5450 3GHz, Infiniband		 5760 23040 54210 69120 Sun
291 Hitachi SR16000 Model L2/121, Power6 4.7Ghz, Infiniband 3872 7744 51210 72793.6 Hitachi
308 T2K Open Supercomputer/Kyodai
Fujitsu Cluster HX600, Opteron Quad Core, 2.3 GHz, Infiniband		 6656 13312 50510 61235 Fujitsu
311 PRIMERGY RX200 S6, Xeon X5670 2.93 GHz, Infiniband QDR 4704 N/A 50190 55130 Fujitsu
430 DEGIMA
DEGIMA Cluster, Intel i5, ATI Radeon GPU, Infiniband QDR		 7920 N/A 42830 111150 Self-made
431 SGI Altix ICE 8200EX, Xeon X5560 quad core 2.8 GHz 4096 N/A 42690 45875.2 SGI
432 SGI Altix ICE 8200EX, Xeon X5560 quad core 2.8 GHz 4096 12288 42690 45875.2 SGI