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FIG · Equipment

GMO miner B3

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Is the B3 profitable?

The GMO miner B3 mines Bitcoin on the SHA-256 algorithm at 33 TH/s, drawing 3,417 W (104 J/TH). At $0.08 per kWh it earns about $1.24 a day but spends $6.56 on power, so it loses $5.32 a day. It only makes money if your power costs less than about $0.015 per kWh.

That puts it #506 of 522 on daily profit across every miner we track, and #241 of 262 SHA-256 miners on efficiency. It isn’t in stock with us at the moment. It’s an air-cooled unit, released in November 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$2.46-$1.22-$37
$0.05$4.10-$2.86-$86
$0.06$4.92-$3.68-$110
$0.08$6.56-$5.32-$160
$0.10$8.20-$6.96-$209
$0.12$9.84-$8.60-$258
$0.15$12.30-$11.06-$332

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