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Obelisk SC1

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Is the SC1 profitable?

The Obelisk SC1 mines Siacoin and ScPrime on the Blake2b algorithm at 550 GH/s, drawing 500 W (909 J/TH). At $0.08 per kWh it earns about $0.43 a day but spends $0.96 on power, so it loses $0.53 a day. It only makes money if your power costs less than about $0.036 per kWh.

That puts it #265 of 522 on daily profit across every miner we track, and #25 of 26 Blake2b miners on efficiency. It isn’t in stock with us at the moment. It’s an air-cooled unit, released in June 2018.

Profit at different electricity prices

Same machine, same day, different power bill. Find the row closest to what you pay.

Power pricePower / dayProfit / dayProfit / month
$0.03$0.36$0.07$2
$0.05$0.60-$0.17-$5
$0.06$0.72-$0.29-$9
$0.08$0.96-$0.53-$16
$0.10$1.20-$0.77-$23
$0.12$1.44-$1.01-$30
$0.15$1.80-$1.37-$41

Other Blake2b miners

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Figures updated 16:26 UTC, 25 September 2026, using today’s network difficulty and coin prices. Estimates, not financial advice.