United Kingdom
In November 1997, 24 systems appeared in the TOP500 list.
| Rank | System | Procs | Memory(GB) | Rmax (GFlops) | Rpeak (GFlops) | Vendor |
|---|---|---|---|---|---|---|
| 3 | T3E900 | 840 | N/A | 430.3 | 756 | Cray Inc. |
| 8 | VPP700/116 | 116 | N/A | 213 | 255.2 | Fujitsu |
| 22 | T3E900 | 256 | N/A | 138.7 | 230.4 | Cray Inc. |
| 65 | SR2201/224 | 224 | N/A | 51.13 | 67.2 | Hitachi |
| 69 | T3D MC512-8 | 512 | N/A | 50.8 | 76.8 | Cray Inc. |
| 129 | T3D MC256-8 | 256 | N/A | 25.3 | 38.4 | Cray Inc. |
| 138 | SX-4/12A | 12 | N/A | 23.2 | 24 | NEC |
| 216 | VPP300/9 | 9 | N/A | 19.2 | 19.8 | Fujitsu |
| 237 | SP P2SC 135 MHz | 42 | N/A | 16.41 | 22.68 | IBM |
| 279 | SP2/75 | 75 | N/A | 14.38 | 19.95 | IBM |
| 310 | Y-MP C916/16256 | 16 | N/A | 13.7 | 15.238 | Cray Inc. |
| 346 | Ultra Enterprise 6000 | 28 | N/A | 12.53 | 14 | Sun |
| 347 | Ultra Enterprise 6000 | 28 | N/A | 12.53 | 14 | Sun |
| 359 | HPC 10000 | 28 | N/A | 12.05 | 14 | Sun |
| 381 | SP P2SC 120 MHz | 32 | N/A | 11.38 | 15.36 | IBM |
| 390 | HPC 6000 | 25 | N/A | 11.22 | 12.5 | Sun |
| 399 | HPC 6000 | 24 | N/A | 10.78 | 12 | Sun |
| 400 | HPC 6000 | 24 | N/A | 10.78 | 12 | Sun |
| 412 | HPC 10000 | 25 | N/A | 10.77 | 12.5 | Sun |
| 419 | ORIGIN 2000 | 32 | N/A | 10.42 | 12.48 | SGI |
| 473 | HPC 10000 | 24 | N/A | 10.35 | 12 | Sun |
| 491 | SP2/48 | 48 | N/A | 9.53 | 12.768 | IBM |
| 499 | HPC 10000 | 22 | N/A | 9.513 | 11 | Sun |
| 500 | HPC 10000 | 22 | N/A | 9.513 | 11 | Sun |