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In November 2005, 2 systems appeared in the TOP500 list.
| Rank | System | Procs | Memory(GB) | Rmax (GFlops) | Rpeak (GFlops) | Vendor |
|---|---|---|---|---|---|---|
| 8 |
MareNostrum JS20 Cluster, PPC 970, 2.2 GHz, Myrinet |
4800 | 9600 | 27910 | 42144 | IBM |
| 400 | Cray X1E | 124 | N/A | 1860.6 | 2241.92 | Cray Inc. |