40 watts while idle = 28.8 kwh a month so 13.5 cents per kwh = $3.88 / month to ... | Hacker News

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narrator on March 2, 2015 | parent | context | favorite | on: An $89 remanufactured Ubuntu workstation

40 watts while idle = 28.8 kwh a month so 13.5 cents per kwh = $3.88 / month to run. Rasberry Pi B+ uses 1.21 watts while idle so about 11 cents /month. So a Rasberry Pi will pay for itself in about 10 months.

mark-r on March 2, 2015 | [–]

Given that the Raspberry Pi costs half as much to start, even adding a case, you're ahead on day 1.

narrator on March 2, 2015 | | [–]

Throw in a used 19" LCD that uses 32w (<$30 on ebay) and you're still ahead.

vacri on March 3, 2015 | [–]

... assuming the target audience of schools, non-profits, and call-centers leave them on 24/7.

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