The Definitive Guide toAI Data Centers
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AMD Helios (72× MI455X) rack-scale FP4 (1.4 EF FP8), 31 TB HBM4, ORW double-wide

~2.9 EF FP4observed

Value kindobserved — Reported measurements, counts, and specifications keep the precision and scope stated by their source; an exact specification is not treated as a range.
ScopeAMD's advertised rack spec (Helios product page). AMD's page does not say whether the 2.9 EF FP4 figure is dense or sparse (checked 2026-10-16). Helios is in production; initial systems are installed at OpenAI, Meta, Microsoft and Oracle (AMD, 2026-10-12).
As of2026-10
SourceAMD, Helios product page, Rackscale Solution Specs and footnote 2. · Rackscale Solution Specs and footnotes 1–2; FAQ reference-design status
Reviewchecking…review by 2027-01-16 · standard cadence
Recorded changeslast 2026-10-15 · 3 revisions tracked
Claim idamd-helios-72-mi455x-rack-scale-fp4-1-4-ef-fp8

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