Antminer K7

The Bitmain Antminer K7 is a specialized ASIC miner designed for the Eaglesong algorithm, primarily used for mining Nervos (CKB). As of mid-2026, the market reflects a transition phase for this model, with pricing dropping as profitability faces challenges from high network difficulty and energy costs.

Core Product Specifications

The K7 remains one of the most powerful units for the CKB ecosystem, offering a significant leap in efficiency over previous generations like the K5 Miningnow.

• Hashrate: 63.5 TH/s ± 3% MinerstatMiningnow.
• Power Efficiency: 48.5 J/TH (consuming 3080W at the wall) MinerstatMiningnow.
• Architecture: Compact air-cooled design weighing approx. 16.1 kg Miningnow.

Market Trends & Insights

* Profitability Pressure: At standard electricity rates ($0.07–$0.10/kWh), the K7 is currently operating at a net daily loss (ranging from -$0.57 to -$3.30 per day) Miningnow. Positive ROI now requires ultra-low electricity costs below $0.05/kWh Miningnow.

* Price Correction: Secondary and wholesale market prices have seen a sharp decline, with units now available from $999 to $2,349 compared to launch prices exceeding $5,000 GoogleAlibaba.

* Operational Shift: Many operators are moving their hashrate to marketplaces like NiceHash to earn BTC, which can sometimes provide more stable yields than direct CKB mining in a volatile market Nicehash.

Sourcing Landscape

Suppliers are currently offloading stock, often labeling units as "Clearance" or "Spot Shipment" AlibabaAlibaba. Major wholesale hubs in Shenzhen offer the most competitive pricing for bulk orders.