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Obelisk SC1 Slim

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Is the SC1 Slim profitable?

The Obelisk SC1 Slim mines Siacoin and ScPrime on the Blake2b algorithm at 550 GH/s, drawing 450 W (818 J/TH). At $0.08 per kWh it earns about $0.43 a day but spends $0.86 on power, so it loses $0.43 a day. It only makes money if your power costs less than about $0.040 per kWh.

That puts it #256 of 522 on daily profit across every miner we track, and #23 of 26 Blake2b miners on efficiency. It isn’t in stock with us at the moment. It’s an air-cooled unit, released in January 2019.

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$0.32$0.11$3
$0.05$0.54-$0.11-$3
$0.06$0.65-$0.21-$6
$0.08$0.86-$0.43-$13
$0.10$1.08-$0.65-$19
$0.12$1.30-$0.86-$26
$0.15$1.62-$1.19-$36

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.