named 1:1 versus 2:1 fabric design comparison with an approximately 31% modeled back-end cost delta
1:1 vs 2:1; ~31% modeled cost deltaderivedcontested
| Value kind | derived — Derived values are guide calculations; their result is only as fixed as the stated inputs, scope, and method. |
|---|---|
| Scope | A named source comparison, not training and inference defaults. Derive each project tier from measured traffic, collective/request mix, placement and overlap, topology, failure headroom, and step-time or tail-latency SLO. |
| As of | 2025 |
| Source | SemiAnalysis AI Neocloud Playbook |
| Review | checking…review by 2026-09-08 · fast cadence |
| Recorded changes | last 2026-08-24 · 2 revisions tracked |
| Claim id | training-back-end-fabric-non-blocking-2-1 |
Where the guide uses it
← Full numbers register — every date-stamped figure in the guide, with revision history.