Is NVFP4 really Q8-level quality? 5090 owner questions the 'no-brainer' quantization advice
nirurin · reddit · 2026-09-24
A Reddit user pushes back on the common advice that NVFP4 is a "no-brainer" for Blackwell/5090 cards due to its speed gains. Going NVFP4 means trading down from Q5/Q6 quality, yet community consensus claims it rivals Q8 — and quantitative comparisons are scarce. The poster is looking for actual measured quality data instead of blanket recommendations.
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