Colossus node architecture
Colossus is operated by xAI in United States. This profile covers October 2024 deployment snapshot.
Cluster interconnect: NVIDIA Spectrum-X Ethernet / RDMA. Topology: Not verified.
Hopper deployment · partial profile
- Node count
- Not verified
- CPU
- Not verified
- CPUs per node
- Not verified
- Accelerator
- NVIDIA Hopper
- Physical accelerators per node
- Not verified
- Host / unified memory
- Not verified
- Accelerator memory
- Not verified
- Local accelerator links
- Not verified
- CPU-to-accelerator link
- Not verified
- Storage
- Not verified
Scope and uncertainty
Historical October 2024 deployment snapshot: NVIDIA reported 100,000 Hopper GPUs in Memphis. This is not a current live inventory. Node count, CPUs, per-node accelerator count and memory are not verified here.
Not verified means a detail has not been confirmed in this catalog. Diagrams are schematic; node indices are illustrative, not physical hostnames. Data checked 14 September 2026.
Sources
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