f = 0, 0.25, 0.5, 0.75, 1 on GDDR7 (the 5090's board), one HBM3 stack and eight HBM3 stacks, scored in energy per
hash, reads in flight per watt, rate per chip and dollars per MH/s against the RTX 5090 at 136.1 MH/s and 326 W.
The curve is monotone toward f = 1; the f = 1 chip reads 5.1x (GDDR7) to 9.2x (HBM3) per joule in the model and
2.1x to 4.8x by the Ethash precedent: over 2x. The mixer and item 2 do not touch it; the levers named are the
5090's watts under a power cap (a PC 2 job, owed) and program work in the latency shadow. Inputs cited with URLs
read 6 October 2026; the mixer counted from memhard.rs at 128 hoisted / 144 unhoisted ops per application.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
