Unverified50% confidenceFactExact time
MXFP8 has two variants: E4M3 (4-bit exponent, 3-bit mantissa) and E5M2 (5-bit exponent, 2-bit mantissa).
1
Sources
50%
Confidence
Long-term
Relevance
9/16/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedFP8 has two main sub-formats — E4M3 (4-bit exponent + 3-bit mantissa) and E5M2 (5-bit exponent + 2-bit mantissa) — optimized for forward propagation and backward propagation respectively.71% similarUnverifiedMXFP8 belongs to the microscaling floating-point format family, whose core concept is sharing a single scaling factor within a small block of data.68% similarVerifiedMXFP4 (Microscaling Float Point 4-bit) is part of the OCP MX standard jointly promoted by Microsoft, NVIDIA, AMD, and other companies.66% similarUnverifiedNVFP4 采用 E2M1 编码（2位指数、1位尾数、1位符号位），以每16个元素为一组配置独立的 FP8 缩放因子66% similarUnverifiedMX格式由Intel、微软、Meta、NVIDIA等厂商联合提交为OCP标准，形成MXFP4、MXFP6、MXFP8等格式规范65% similar
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