Supercomputers/Systems/Microsoft Azure AI supercomputer (Loughton, UK)
United Kingdom · under construction · ai training
Microsoft Azure AI supercomputer (Loughton, UK)
Deep dive: How Nebius and Nscale build GPU clouds
Operated by Microsoft at Nscale AI Campus (Loughton) .
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
- -
- 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 |
|---|---|---|---|---|---|
| Integrator | - Nscale's AI Campus at Loughton, built and operated by Nscale for Microsoft's Azure capacity | Nscale | - | Verified | nscale.comblogs.microsoft.com |
| Accelerator | NVIDIA GB300 NVL72 Accelerators 23,040 NVIDIA GB300 GPUs (Nscale exact figure; Microsoft: more than 23,000), delivery Q1 2027 | NVIDIA | 23,040 reported | Verified | nscale.comblogs.microsoft.com |
AI datacenter metrics
Figures beyond an accelerator count, each with who stated it. What can and cannot be compared across AI datacenters.
| Metric | Value | As of | Basis | Note | Source |
|---|---|---|---|---|---|
| Accelerators | 23,040 accelerators | 2025-09 | Design target | Planned GB300 GPUs for the Loughton Azure supercomputer, delivery due Q1 2027 per Nscale. Not yet installed. | nscale.com |
The read
A dedicated Microsoft Azure capacity commitment on Nscale's AI Campus in Loughton, announced as part of Microsoft's four-year, $30 billion UK investment. Microsoft's own blog states 'more than 23,000 NVIDIA GPUs' and Nscale's own release gives the precise figure, 23,040 NVIDIA GB300 GPUs on 50MW scaling to 90MW with delivery in Q1 2027, so the GPU count and model are verified between the two. The same Loughton campus and the same nScale-Microsoft-NVIDIA partnership also carries a separate, smaller OpenAI Stargate UK offtake (up to 8,000 GPUs scaling toward 31,000) that Nscale describes as a distinct deal; that OpenAI capacity is not counted in this row's figures. No FLOPS or HPL figure has been published.
Timeline
- 2025-09 Announced source
Site & facility
Nscale AI Campus (Loughton)
- Location
- Loughton, United Kingdom
- Substation
- 90 MW
- Commissioned
- 2027
Change history
- 2026-10-04 Added AI datacenter metrics for microsoft-nscale-loughton-uk
- 2026-09-23 Added Microsoft/Nscale Loughton UK AI supercomputer, verified against Microsoft and Nscale
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 |
|---|---|---|
| blogs.microsoft.com | names system only | - |
| nscale.com | names system, part and count | NVIDIA GB300 NVL72 · counts: 23040 |
Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.