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In June 2006, 35 systems appeared in the TOP500 list.

Rank System Procs Memory(GB) Rmax (GFlops) Rpeak (GFlops) Vendor
31 Cray XT3, 2.6 GHz 2652 N/A 11810 13790.4 Cray Inc.
42 eServer pSeries 690 (1.9 GHz Power4+) 2176 N/A 9241 16538 IBM
43 eServer pSeries 690 (1.9 GHz Power4+) 2176 N/A 9241 16538 IBM
59 eServer pSeries p5 575 1.5 GHz 1536 N/A 7395 9216 IBM
76 eServer pSeries 690 (1.7 GHz Power4+) 1600 N/A 6188 10880 IBM
93 BladeCenter LS20, Opteron 2.2 GHz Dual core, GigEthernet 2000 N/A 4924.8 8800 IBM
94 BladeCenter LS20, Opteron 2.2 GHz Dual core, GigEthernet 2000 N/A 4924.8 8800 IBM
106 eServer Blue Gene Solution 2048 N/A 4713 5734 IBM
127 JS20 Cluster, PPC 970, 2.2 GHz, Myrinet 736 N/A 4149.62 6476.8 IBM
145 BladeCenter HS20 Xeon 3.06 GHz, Gig-Ethernet 3200 N/A 3755 19584 IBM
150 BladeCenter HS20 Xeon 3.06 GHz, Gig-Ethernet 1500 N/A 3755 9180 IBM
162 xSeries Xeon 3.06 GHz - Gig-E 1128 N/A 3755 6903.36 IBM
163 xSeries Xeon 3.06 GHz - Gig-E 1128 N/A 3755 6903.36 IBM
187 BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz, Gig-Ethernet 952 N/A 3594.87 6854.4 IBM
197 SuperDome 1 GHz/HyperPlex 1664 N/A 3527.7 6656 HP
249 Jupiter
Fire V20z Cluster, Opteron 2.2 GHz, Gig Ethernet		 1024 1024 3146 4394 Sun
305 Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz 800 N/A 2862.1 5120 HP
306 Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz 800 N/A 2862.1 5120 HP
307 Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz 800 N/A 2862.1 5120 HP
308 Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz 800 N/A 2862.1 5120 HP
309 Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz 800 N/A 2862.1 5120 HP
310 Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz 800 N/A 2862.1 5120 HP
311 Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz 800 N/A 2862.1 5120 HP
312 Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz 800 N/A 2862.1 5120 HP
313 Blade Cluster BL-20P, Pentium4 Xeon 3.2 GHz 800 N/A 2862.1 5120 HP
331 SuperDome 875 MHz/HyperPlex 1536 N/A 2848 5376 HP
368 Integrity Superdome, Itanium2 1.5 GHz, HyperPlex 736 N/A 2693 4416 HP
374 Blade Cluster BL-20P, Pentium4 Xeon 3.06 GHz 760 N/A 2600 4651.2 HP
430 BladeCenter HS20 Cluster, Xeon EM64T 3.2 GHz - Gig-Ethernet 600 N/A 2404.52 3840 IBM
431 Blade Cluster BL-25P, Opteron 2.4 GHz, GigEthernet 896 N/A 2404.1 4300.8 HP
432 Blade Cluster BL-25P, Opteron 2.4 GHz, GigEthernet 896 N/A 2404.1 4300.8 HP
433 xSeries Xeon 3.06 GHz - Gig-E 640 N/A 2403.2 3916.8 IBM
437 SGI Altix 1.3 GHz 512 N/A 2338 2662.4 SGI
466 SP Power3 375 MHz 16 way 1920 N/A 2106 2880 IBM
491 xSeries Xeon 2.8 GHz, Gig-Ethernet 2256 N/A 2026 12633 IBM