United Kingdom
In November 1993, 21 systems appeared in the TOP500 list.
| Rank | System | Procs | Memory(GB) | Rmax (GFlops) | Rpeak (GFlops) | Vendor |
|---|---|---|---|---|---|---|
| 17 | Y-MP C916/16128 | 16 | N/A | 13.7 | 15.238 | Cray Inc. |
| 98 | iPSC/860 | 128 | N/A | 2.6 | 5.12 | Intel |
| 111 | CM-200/16k | 512 | N/A | 2.4 | 5 | TMC |
| 114 | Y-MP8/864 | 8 | N/A | 2.144 | 2.667 | Cray Inc. |
| 121 | Y-MP8/864 | 8 | N/A | 2.144 | 2.667 | Cray Inc. |
| 138 | Y-MP8I/8128 | 8 | N/A | 2.144 | 2.667 | Cray Inc. |
| 142 | Y-MP8/864 | 8 | N/A | 2.144 | 2.667 | Cray Inc. |
| 143 | Y-MP8/864 | 8 | N/A | 2.144 | 2.667 | Cray Inc. |
| 149 | VPX240/10 | 1 | N/A | 2.11 | 2.5 | Fujitsu |
| 187 | KSR1-64 | 64 | N/A | 1.838 | 2.56 | KSR |
| 238 | CRAY-2/4-256 | 4 | N/A | 1.406 | 1.951 | Cray Inc. |
| 249 | iPSC/860 | 64 | N/A | 1.4 | 2.56 | Intel |
| 258 | CS/i860/64 | 64 | N/A | 1.3 | 2.56 | Meiko |
| 267 | Y-MP4E/464 | 4 | N/A | 1.159 | 1.333 | Cray Inc. |
| 271 | Y-MP8/432 | 4 | N/A | 1.159 | 1.333 | Cray Inc. |
| 311 | CS/i860/42 | 42 | N/A | 0.97 | 1.68 | Meiko |
| 329 | KSR1-32 | 32 | N/A | 0.893 | 1.28 | KSR |
| 340 | Y-MP4E/364 | 3 | N/A | 0.881 | 0.999 | Cray Inc. |
| 364 | CS/i860/32 | 32 | N/A | 0.825 | 1.28 | Meiko |
| 422 | Y-MP4/264 | 2 | N/A | 0.604 | 0.666 | Cray Inc. |
| 458 | Y-MP4/216 | 2 | N/A | 0.604 | 0.666 | Cray Inc. |