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[–] -1 points 3 weeks ago (2 children)

The older CPUs are incredibly inefficient

They would probably cover a good amount of the upgrade cost in just power savings

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  • [–] 1 point 3 weeks ago

    Keep in mind that they're talking about hardware control systems and not compute nodes. On these machines, the savings would probably not be too big (no/few consolidation gains). It also sounds like the decision was less about the upgrade cost and more about avoiding failure risks.

    I also ran the numbers for fun. They estimated the cost to be 5.4MCHF for 2200 machines. Assuming 0.2CHF/kWh, they would need to save 140W per machine for 10 years to offset the upgrade cost. So, yes, it could indeed offset a good part of the upgrade cost over time.

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