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In November 2005, 17 systems appeared in the TOP500 list.
| Rank | System | Procs | Memory(GB) | Rmax (GFlops) | Rpeak (GFlops) | Vendor |
|---|---|---|---|---|---|---|
| 7 | Earth-Simulator | 5120 | N/A | 35860 | 40960 | NEC |
| 16 | Cray X1E (4GB) | 1020 | 4080 | 15706 | 18442 | Cray Inc. |
| 17 | Cray X1E (2GB) | 1014 | N/A | 14955 | 18333 | Cray Inc. |
| 37 | SX8/576M72 | 576 | N/A | 8923 | 9216 | NEC |
| 51 | PRIMEPOWER HPC2500 (2.08 GHz) | 1664 | 12288 | 6860 | 13844 | Fujitsu |
| 67 | PRIMEPOWER HPC2500 (1.3 GHz) | 2304 | N/A | 5406 | 11980 | Fujitsu |
| 85 | PRIMEPOWER HPC2500 (1.56 GHz) | 1472 | N/A | 4552 | 9185 | Fujitsu |
| 103 | Cray X1E | 252 | 504 | 3783.1 | 4556.16 | Cray Inc. |
| 164 | Cray X1 | 252 | N/A | 2932.9 | 3225.6 | Cray Inc. |
| 294 | SX-6/248M31 (typeE, 1.778ns) | 248 | N/A | 2155 | 2232 | NEC |
| 357 | SX8/128M16 | 128 | N/A | 2017 | 2048 | NEC |
| 387 | Cray X1E | 124 | N/A | 1905 | 2241.92 | Cray Inc. |
| 388 | Cray X1E | 124 | 496 | 1905 | 2241.92 | Cray Inc. |
| 400 | Cray X1E | 124 | N/A | 1860.6 | 2241.92 | Cray Inc. |
| 473 | SR8000/MPP | 1152 | N/A | 1709.1 | 2074 | Hitachi |
| 480 | Cray X1E (1 GHz) | 124 | 496 | 1686 | 1984 | Cray Inc. |
| 494 | SR8000-F1/168 | 168 | N/A | 1653 | 2016 | Hitachi |