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I made my fortune by building a GPU miner in January 2011. Even by then, the best GPU for it was sold out so I bought 4 of the next best one.

I shut it down in July of that year because it was raising my electric bill by like $100/month. Possibly the biggest financial mistake of my life.

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I partially heat my 900sqft SFH mining monero... since [compared to resistive space heater usage-offset] there is no additional energy usage, it's effectively free crypto.

Of course this means you can only earn half of the year. Mine ejects its heat under desk toes.

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