Agreed with you on that. One of the reasons for my post was, I was told by some engineers over at aeronautical companies that such float drift is trivial — anything beyond 10^-5 or 10^-8 becomes meaningless. Nearly the same was said by some engineers at HFT and quant firms. Which led me to wonder if cross-hardware drift is really a big deal. From what I've tested, even differences between an Intel i5 and Intel i7 pile up, let alone between Intel and AMD. Curious if the "it's within tolerance" answer holds in your RF work or if you've hit cases where the hardware boundary actually mattered.