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In June 2005, 21 systems appeared in the TOP500 list.
| Rank | System | Procs | Memory(GB) | Rmax (GFlops) | Rpeak (GFlops) | Vendor |
|---|---|---|---|---|---|---|
| 4 | Earth-Simulator | 5120 | N/A | 35860 | 40960 | NEC |
| 27 | SX8/576M72 | 576 | N/A | 8923 | 9216 | NEC |
| 41 | PRIMEPOWER HPC2500 (2.08 GHz) | 1664 | 12288 | 6860 | 13844 | Fujitsu |
| 50 | Cray X1 | 504 | N/A | 5895 | 6451 | Cray Inc. |
| 55 | PRIMEPOWER HPC2500 (1.3 GHz) | 2304 | N/A | 5406 | 11980 | Fujitsu |
| 67 | PRIMEPOWER HPC2500 (1.56 GHz) | 1472 | N/A | 4552 | 9185 | Fujitsu |
| 80 | Cray X1E | 252 | 1008 | 3783.1 | 4556.16 | Cray Inc. |
| 81 | Cray X1E | 252 | 504 | 3783.1 | 4556.16 | Cray Inc. |
| 121 | Cray X1 | 252 | N/A | 2932.9 | 3225.6 | Cray Inc. |
| 154 | Cray X1 | 188 | N/A | 2188.15 | 2406.4 | Cray Inc. |
| 159 | SX-6/248M31 (typeE, 1.778ns) | 248 | N/A | 2155 | 2232 | NEC |
| 207 | SX8/128M16 | 128 | N/A | 2017 | 2048 | NEC |
| 222 | Cray X1E | 124 | 496 | 1905 | 2241.92 | Cray Inc. |
| 235 | Cray X1E | 124 | N/A | 1860.6 | 2241.92 | Cray Inc. |
| 272 | SR8000/MPP | 1152 | N/A | 1709.1 | 2074 | Hitachi |
| 277 | Cray X1E (1 GHz) | 124 | 496 | 1686 | 1984 | Cray Inc. |
| 285 | SR8000-F1/168 | 168 | N/A | 1653 | 2016 | Hitachi |
| 339 | SX-6/192M24 | 192 | N/A | 1484 | 1536 | NEC |
| 353 | Cray X1 | 124 | N/A | 1448.42 | 1587.2 | Cray Inc. |
| 386 | SX-7/160M5 | 160 | N/A | 1378 | 1412.8 | NEC |
| 489 | SX-5/128M8 3.2ns | 128 | N/A | 1192 | 1280 | NEC |