Supercomputers/Systems/Barber Lake (Fluidstack)
USA · under construction · ai training
Barber Lake (Fluidstack)
Also known as Cipher Barber Lake for Fluidstack
Operated by Fluidstack at Cipher Barber Lake Campus .
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
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- 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 | - Cipher builds and leases Barber Lake to Fluidstack (168 MW critical IT, 244 MW gross, delivery September 2026) | Cipher Mining | - | Reported | sec.gov |
| Integrator | - Fluidstack is the lessee under the 10-year HPC colocation agreement, with a Google backstop of 1.4 billion dollars | Fluidstack | - | Reported | sec.gov |
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 |
|---|---|---|---|---|---|
| Facility power | 244 MW | 2025-09-25 | Design target | Cipher: maximum of 244 MW of gross capacity supporting the 168 MW critical IT load at Barber Lake. | sec.gov |
| IT power | 168 MW | 2025-09-25 | Design target | Cipher: 168 MW of critical IT load for Fluidstack at Barber Lake, 10-year lease. Project cost stated as 9-11 million USD per critical IT MW. | sec.gov |
Compute deals
- 2025-09-25: Fluidstack and Cipher Mining (datacenter lease , 168 MW, headline $3bn). sec.govsec.gov
All compute deals. Headline values are as announced, not additive.
The read
Cipher Mining's Barber Lake campus near Colorado City, Texas, under a 10-year HPC colocation lease to Fluidstack announced 25 September 2025: 168 MW of critical IT load supported by up to 244 MW of gross capacity, delivery targeted for September 2026 and rent from October 2026, with Google backstopping 1.4 billion dollars of Fluidstack's lease obligations. Cipher's business update describes ground broken at the 587-acre site with 300 MW of approved power capacity. Cipher's Q2 2026 results coverage still lists first Barber Lake rent as expected in the second half of 2026, so no delivery is confirmed in sources fetched and status stays under_construction. No page names the GPU or TPU hardware. Both cited pages are Cipher's own, so the tier is reported. It has never submitted an HPL result.
Timeline
- 2025-09-25 Announced source
Site & facility
Change history
- 2026-10-02 Added Barber Lake (Fluidstack) (Fluidstack)
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.
Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.