Change Your Architecture and Save the World
summary
Argues that replacing legacy x86 servers with cloud‑native Arm64 yields big real savings: the worked example shows 41 servers vs 18 Arm64 servers, with those 18 servers drawing 705 W and fitting inside a 14 kW per‑rack budget (one rack), while GPUs cost more to buy and run and most AI energy goes to training. Recommends incremental migration: test small apps on public cloud Arm64 instances, measure performance per watt and per rack, then scale.
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