Snellius (Phase 3 GPU)

Operated by SURF at SURF (Amsterdam Science Park) .

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: 13.64 PFlop/s
Rpeak: 21.66 PFlop/s
Rmax ÷ Rpeak: 63.0%
Cores: -
Power: 295.67 kW
Per watt: 46.1 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	- Lenovo	Lenovo 992HKEX	-	Verified	top500.org servicedesk.surf.nl
Accelerator	NVIDIA H100 SXM5 Accelerators CUDA (Hopper GH100) · 16,896C · 1.98 GHz · TSMC 4N · 700 W 88 nodes of four NVIDIA H100 SXM5	NVIDIA NVDANASDAQ	352 estimated	Reported	servicedesk.surf.nl top500.org
Operating system	Red Hat Enterprise Linux Operating systems Linux distribution · Open source, commercial support subscription RHEL 9.2	Red Hat IBMNYSE rolls up to IBM	-	Reported	top500.org

The read

SURF's Lenovo system, which TOP500 lists as four separate entries so no whole-machine figure exists. This row is the Phase 3 GPU partition, its best entry, 94th in November 2024, with 88 nodes of four NVIDIA H100 and AMD EPYC CPUs. The other three entries peaked lower, at 144th, 176th and 313th. SURF's hardware page is the only source for the node counts, and no go-live date or core count for this partition was found. TOP500 is the only source for Rmax, Rpeak and core count, so the tier is reported.

Timeline

2024-11 List debut at #94 (November 2024) source

Public list appearances

Pointers only: rank and edition, linking to the canonical entry. We do not reproduce list tables. See sourcing policy.

Site & facility

SURF (Amsterdam Science Park)

Location: Amsterdam, Netherlands
Commissioned: 2021

amsterdamsciencepark.nl

Change history

2026-09-22 Gained a Green500 rank pointer (#27 on the 2024-11 list)
2026-09-20 Added (Phase 3 GPU partition, TOP500 lists Snellius as four entries)

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
servicedesk.surf.nl	names system and part	NVIDIA H100 SXM5
top500.org	names system and part	NVIDIA H100 SXM5

Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.