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NVFP4 block size (16 values, FP8 scale) vs MXFP4 (32 values, power-of-two scale)

16 vs 32observed

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.
As of2025-06
SourceNVIDIA, Introducing NVFP4 (2025-06-24); OCP Microscaling Formats (MX) Specification v1.0
Reviewchecking…review by 2027-06-24 · standard cadence
Recorded changeslast 2026-10-15 · 2 revisions tracked
Claim idnvfp4-block-size-16-values-fp8-scale-vs-mxfp4

Where the guide uses it

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