Essays··8 min read
the memory wall, the interconnect wall, and the one budget line that actually moved
Seven hundred billion dollars in quarterly capex and the useful question is not the size of the number — it is which of three walls the number is actually paying down. Memory bandwidth, accelerator interconnect, thermal-plus-power. Most boards approve the headline without asking.
hbm4-memory-bandwidthaccelerator-interconnectdata-centre-thermalinference-unit-economics
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