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For STEEM mining, it is CPU only. The mining is done on an I7 desktop tower. I haven't thought of ROI at the moment, but someone told me mining a STEEM block gets you a SP, so I guess you can calculate the conversion to STEEM to BTC to USD. I think the tower is using a few hundred watts.

Can you give me some idea? If you spend all day steemmining with an i7 chip, what kind of real-life $$ rewards are we talking?

As an example, let's say the tower is $700 and uses 300 watts with max load. If you mine 5 blocks a day you'll receive 5 SP, I think. I have no idea the conversion ratio with SP, and also as an aside, it'll take two years or 104 equal payments to power down from SP to STEEM, then you can exchange to BTC then to USD. Whatever it is, the electricity will cost you 0.3 KW * $0.10 / KWh * 24h = $0.72 per day, depending on where you live, it may be more or less than 10 cents per kilowatt-hour. Even if 1 SP equals a dollar, it'll take you 5 and a half months to make that tower back. But that is considering everything stays the same for all that time.

Cheers for your insights man. +1

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