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Bitmain Antminer K7

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Is the Antminer K7 profitable?

The Bitmain Antminer K7 (63.5Th) mines Nervos (CKB) on the Eaglesong algorithm at 63.5 TH/s, drawing 3,080 W (48.5 J/TH). At $0.08 per kWh it earns about $5.00 a day but spends $5.91 on power, so it loses $0.92 a day. It only makes money if your power costs less than about $0.068 per kWh.

That puts it #287 of 522 on daily profit across every miner we track, and #1 of 13 Eaglesong miners on efficiency. It isn’t in stock with us at the moment. It’s an air-cooled unit, released in January 2023.

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$2.22$2.78$83
$0.05$3.70$1.30$39
$0.06$4.44$0.56$17
$0.08$5.91-$0.92-$28
$0.10$7.39-$2.40-$72
$0.12$8.87-$3.87-$116
$0.15$11.09-$6.09-$183

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