True, but how much has power consumption changed in the last few years? Enough to be a serious obstacle in the face of, say, a determined national defense effor

True, but how much has power consumption changed in the last few years? Enough to be a serious obstacle in the face of, say, a determined national defense effort? Serious question, I guess. I don't really know know how power consumption varies across the last few generations of chips, or among the chips you'd plausibly choose between for a warhead or something. But I'm guessing it's not a huge effect.