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In June 2004, 36 systems appeared in the TOP500 list.

Rank System Procs Memory(GB) Rmax (GFlops) Rpeak (GFlops) Vendor
6 eServer pSeries 690 (1.9 GHz Power4+) 2112 N/A 8955 16051 IBM
18 eServer pSeries 690 (1.7 GHz Power4+) 1600 N/A 6188 10880 IBM
31 xSeries Xeon 3.06 GHz - Gig-E 1128 N/A 3755 6903.36 IBM
32 xSeries Xeon 3.06 GHz - Gig-E 1128 N/A 3755 6903.36 IBM
52 pSeries 690 Turbo 1.3GHz 960 N/A 2560 4992 IBM
53 pSeries 690 Turbo 1.3GHz 960 N/A 2560 4992 IBM
60 xSeries Xeon 3.06 GHz - Gig-E 640 N/A 2403.2 3916.8 IBM
72 SP Power3 375 MHz 16 way 1920 N/A 2106 2880 IBM
92 BladeCenter Xeon 2.8 GHz, Gig-Ethernet 650 N/A 2026 3640 IBM
117 xSeries Cluster Xeon 2.4 GHz - Gig-E 1100 N/A 1755 5280 IBM
121 BladeCenter Cluster Xeon 2.8 GHz, Gig-Ethernet 520 N/A 1732.46 2912 IBM
166 BladeCenter Xeon 2.8 GHz, Gig-Ethernet 400 N/A 1335.13 2240 IBM
181 eServer pSeries 690 (1.7 GHz Power4+) 288 N/A 1222 1958.4 IBM
183 PowerEdge 650, 3.06 GHz, Gig Ethernet 940 N/A 1212 5752.8 Dell
194 SGI Altix 1.3 GHz 256 N/A 1142 1331.2 SGI
204 BladeCenter Xeon 2.8 GHz, Gig-Ethernet 336 N/A 1121.64 1881.6 IBM
235 BladeCenter Xeon 2.8 GHz, Gig-Ethernet 304 N/A 1014.89 1702.4 IBM
267 xSeries Cluster Xeon 2.4 GHz - Myrinet 320 N/A 949.009 1536 IBM
275 xSeries Xeon 3.06 GHz - Gig-E 248 N/A 931.24 1517.76 IBM
277 SX-6/120M15 120 N/A 927.6 960 NEC
278 SX-6/120M15 120 N/A 927.6 960 NEC
316 e-Science Cluster, Opteron 2.2 GHz, Myrinet 256 N/A 836.3 1126.4 Streamline Computing
319 eServer pSeries 655 (1.5 GHz Power4+, GigE) 256 N/A 830 1536 IBM
320 pSeries 690 Turbo 1.3GHz GigEth 512 N/A 826.5 2662.4 IBM
329 xSeries Cluster Xeon 2.4 GHz - Gig-E 376 N/A 806.78 1804.8 IBM
347 SuperDome 875 MHz/HyperPlex 480 N/A 756 1680 HP
351 SuperDome 875 MHz/HyperPlex 384 N/A 756 1344 HP
353 SuperDome 875 MHz/HyperPlex 384 N/A 756 1344 HP
355 SuperDome 875 MHz/HyperPlex 384 N/A 756 1344 HP
357 SuperDome 875 MHz/HyperPlex 384 N/A 756 1344 HP
358 SuperDome 875 MHz/HyperPlex 384 N/A 756 1344 HP
374 SuperDome 875 MHz/HyperPlex 384 N/A 744 1344 HP
415 SGI Altix 1.3 GHz 152 N/A 697.481 790.4 SGI
458 eServer Opteron 2.2 GHZ, Gig-E 330 N/A 654.1 1452 IBM
467 pSeries 690 Turbo 1.5 Ghz GigEth 256 N/A 651.2 1536 IBM
492 SuperDome 875 MHz/HyperPlex 320 N/A 638 1120 HP