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There isn’t anywhere in the US that has 10cents/kwh residential power either (though there are a few places that are close): https://www.eia.gov/electricity/monthly/epm_table_grapher.ph...

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And perhaps we shouldn't just blindly waste energy just because it happens to be cheap.

I think worrying about a few dollars when the performance difference is 2x at minimum is dumb.

It depends on your use-case. If I was making a file server then idle power consumption is all that matters because both of these machines will saturate a gigabit ethernet link[0] and a home file server is going to be idle 90+% of the time. If I was making a build server instead then I'd actually be using the additional CPU capacity.

[0] actually I wouldn't use either of these machines for a file server due to the lack of ECC, but you get the point.

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