Supercomputers/Systems/Imperial CX3
United Kingdom · operational · mixed
Imperial CX3
Also known as CX3
Operated by Imperial College London .
Phase 1 seed dataset, compiled by hand. These rows were built from public operator, laboratory and vendor sources. A mechanical second-reader pass has since fetched every cited source: 1092 of 1153 systems have a readable citation that names them, and 40 are genuinely weakly sourced. Every claim carries its source and a confidence tier. Treat anything below verified as a lead, not a citation.
Measured performance
- Rmax
- -
- Rpeak
- -
- Rmax ÷ Rpeak
- -
- Cores
- 48,384
- Power
- -
- Per watt
- - GF/W
Figures are as last publicly reported for the configuration described below, not a live measurement. Where a system was upgraded in place, the post-upgrade configuration is shown and the earlier one appears in the timeline.
What this machine is made of
One row per supplier relationship. “Supplier at build” is the company that shipped the part at the time; where that company has since been acquired, the parent it rolls up to today is shown beside it. That distinction is what makes ticker-level aggregation possible across a thirty-year dataset.
| Role | Part | Supplier at build | Quantity | Confidence | Source |
|---|---|---|---|---|---|
| Accelerator | NVIDIA L40S Accelerators CUDA (Ada Lovelace) · 350 W 56 NVIDIA L40S 48 GB (7 nodes x 8) | NVIDIA | 56 reported | Reported | icl-rcs-user-guide.readthedocs.io |
| Accelerator | - 88 NVIDIA Quadro RTX 6000 (11 nodes x 8) | NVIDIA | 88 reported | Reported | icl-rcs-user-guide.readthedocs.io |
| CPU | AMD EPYC 7742 (Rome) CPUs x86-64 · 64C · 2.25 GHz · 7 nm · 225 W AMD EPYC 7742: 325 compute, 12 large-memory and 11 GPU nodes x 2 (arithmetic from node table) | AMD | 696 estimated | Reported | icl-rcs-user-guide.readthedocs.io |
| CPU | Intel Xeon Platinum 8358 CPUs x86-64 · 32C · 2.6 GHz · 10 nm · 250 W Intel Xeon Platinum 8358: 53 compute plus 11 GPU nodes x 2 (arithmetic from node table) | Intel | 128 estimated | Reported | icl-rcs-user-guide.readthedocs.io |
The read
Imperial College London's general-purpose Research Computing Service cluster. The specification page lists 408 nodes, 48,384 cores and 717.5 TB of RAM: 325 AMD EPYC 7742 nodes, 53 Intel Ice Lake nodes, 12 large-memory nodes, plus GPU nodes with 56 NVIDIA L40S and 88 Quadro RTX 6000 GPUs (and smaller A100 and A40 groups), on 100GbE with access to the Research Data Store. A February 2026 trade article also describes CX3 as a 408-node cluster.
Timeline
No dated events recorded.
Change history
- 2026-10-02 Added CX3, Imperial College's general-purpose HPC cluster
Source check
We fetched this system's own citations and recorded whether each page actually mentions it. This is a corroboration signal, not a fact check, and it is published so you can see how well the sourcing holds up rather than take it on trust.
| Cited source | Result | Found on the page |
|---|---|---|
| bebeez.eu | names system, part and count | NVIDIA L40S · counts: 56 |
| icl-rcs-user-guide.readthedocs.io | names system, part and count | AMD EPYC 7742 (Rome), Intel Xeon Platinum 8358, NVIDIA L40S · counts: 128, 56 |
Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.