United Kingdom
In November 2001, 34 systems appeared in the TOP500 list.
| Rank | System | Procs | Memory(GB) | Rmax (GFlops) | Rpeak (GFlops) | Vendor |
|---|---|---|---|---|---|---|
| 21 | VPP5000/100 | 100 | N/A | 886 | 960 | Fujitsu |
| 36 | T3E1200 | 812 | N/A | 671 | 974.4 | Cray Inc. |
| 45 | T3E900 | 876 | N/A | 552 | 788.4 | Cray Inc. |
| 51 | T3E1200 | 636 | N/A | 526 | 763.2 | Cray Inc. |
| 90 | ORIGIN 3000 400 MHz | 512 | N/A | 315.5 | 409.6 | SGI |
| 138 | T3E900 | 348 | N/A | 218 | 313.2 | Cray Inc. |
| 140 | VPP700/116 | 116 | N/A | 213 | 255.2 | Fujitsu |
| 156 | SuperDome/HyperPlex | 128 | N/A | 196.7 | 281.6 | HP |
| 157 | SuperDome/HyperPlex | 128 | N/A | 196.7 | 281.6 | HP |
| 162 | SuperDome/HyperPlex | 128 | N/A | 196.7 | 281.6 | HP |
| 165 | SuperDome/HyperPlex | 128 | N/A | 196.7 | 281.6 | HP |
| 174 | SuperDome/HyperPlex | 128 | N/A | 195.8 | 281.6 | HP |
| 175 | SuperDome/HyperPlex | 128 | N/A | 195.8 | 281.6 | HP |
| 176 | SuperDome/HyperPlex | 128 | N/A | 195.8 | 281.6 | HP |
| 177 | SuperDome/HyperPlex | 128 | N/A | 195.8 | 281.6 | HP |
| 192 | SP Power3 375 MHz | 168 | N/A | 171 | 252 | IBM |
| 214 | SP Power3 375 MHz | 158 | N/A | 162 | 237 | IBM |
| 237 | SP Power3 375 MHz | 144 | N/A | 148 | 216 | IBM |
| 294 | SP Power3 375 MHz | 124 | N/A | 128 | 186 | IBM |
| 297 | SP PC604e 332 MHz | 302 | N/A | 126 | 200.5 | IBM |
| 304 | SP Power3 375 MHz | 120 | N/A | 124 | 180 | IBM |
| 307 | SP Power3 375 MHz | 120 | N/A | 124 | 180 | IBM |
| 323 | SP Power3 375 MHz | 116 | N/A | 120 | 174 | IBM |
| 325 | HPC 10000 400 MHz Cluster | 192 | N/A | 118.16 | 153.6 | Sun |
| 330 | HPC 10000 400 MHz Cluster | 192 | N/A | 118.16 | 153.6 | Sun |
| 343 | SP Power3 375 MHz | 112 | N/A | 116 | 168 | IBM |
| 357 | SP Power3 375 MHz | 108 | N/A | 112 | 162 | IBM |
| 362 | SP P2SC 160 MHz | 252 | N/A | 109.9 | 161.2 | IBM |
| 375 | SP Power3 375 MHz | 102 | N/A | 106 | 153 | IBM |
| 381 | SP Power3 375 MHz | 100 | N/A | 104 | 150 | IBM |
| 396 | SP Power3 375 MHz | 96 | N/A | 100 | 144 | IBM |
| 397 | SP Power3 375 MHz | 96 | N/A | 100 | 144 | IBM |
| 453 | SuperDome | 64 | N/A | 99.9 | 140.8 | HP |
| 494 | VPP700/48E | 48 | N/A | 97.5 | 115.2 | Fujitsu |