The Definitive Guide toAI Data Centers
Ask the GuideAboutAccount
Guide › Numbers register › Claim

Modeled back-end fabric cost saving from virtual-modular-switch layout plus 2:1 oversubscription versus NVIDIA's non-blocking 1,024-H100 reference architecture (SemiAnalysis, October 2024; single-source)

~31%modeledcontested

Value kindmodeled — Interpret this value according to its displayed kind, scope, source, and as-of date.
ScopeSemiAnalysis estimates a 31.6% total saving for the combined design versus the NVIDIA reference architecture; the non-blocking virtual-modular-switch layout alone saves 24.9%. These are modeled design-specific costs, not observed fleet savings.
As of2024-10
SourceSemiAnalysis, AI Neocloud Playbook and Anatomy
Reviewchecking…review by 2027-04-01 · fast cadence
Recorded changeslast 2026-10-05 · 3 revisions tracked
Claim idback-end-fabric-cost-avoided-by-oversubscribing

Where the guide uses it

← Full numbers register — every date-stamped figure in the guide, with revision history.