Overview
The Bitmain Antminer KS3, released in August 2023, is Bitmain’s flagship Kaspa (KAS) ASIC miner. With a powerful 9.4 TH/s hashrate and a power draw of around 3500 W, it achieves an energy efficiency of approximately 372 J/TH—making it one of the most potent KAS miners available today.
Exterior Design
The KS3 maintains Bitmain’s classic industrial form factor, with dimensions of 430 × 195.5 × 290 mm (excluding packaging) and a net weight of 16.1 kg (17.7 kg gross). It closely resembles the design of other top-tier Bitmain units, built for reliable high-volume operation.
Power Supply & PSU Details
The KS3 integrates the APW12 power supply, identical to those used in the S19 and L7 series.
- Voltage Input: 200–240 V
- Frequency: 47–63 Hz
- Current Draw: Approx. 20 A
- This robust PSU ensures continuous power delivery under intensive workloads typical for Kaspa mining.
Cooling System
To manage the heat generated by its 3500 W draw, the KS3 uses a quad-fan setup with high-efficiency cooling:
- Noise Level: ~75 dB, standard for industrial ASIC miners.
- Designed for data centers or well-ventilated mining farms.
Fan Specifications
- Model & Size: 120 mm × 120 mm × 38 mm industrial-grade fans
- Quantity: 4 Martech (2 front intake, 2 rear exhaust)
- Voltage/Current: 12 V, 1.65 A
- Speed: Up to 5000 RPM
- Total Airflow: Approx. 360 CFM, enabling rapid thermal dissipation
Internal Components
While Bitmain does not fully disclose the control board specs, the KS3 shares architecture common to high-performance Bitmain units:
- PSU Model: APW121417b
- Control Board: Uses a Ctrl_C73 V3 control board with an embedded CVITEK CV1835
- Hashboards: 3 hashboards 92 chips each optimized for the kHeavyHash algorithm
Hashing Performance
- Hashrate: 9.4 TH/s
- Power Consumption: ~3500 W (±10%)
- Efficiency: ≈ 372 J/TH, which is high for Kaspa mining
- Algorithm: kHeavyHash (Kaspa)
- Chip: BM2380AA
Operational Specifications
- Input Voltage: 200–240 V AC
- Operating Temperature: 0–40 °C
- Storage Temperature: –20–70 °C
- Humidity: 10–90 % RH non-condensing
- Networking: RJ45 Ethernet (10/100 Mbps)
Profitability (Last Update: 23th June 2025)
- Hashrate: 9.4 TH/s
- Power Draw: 3500W
- Daily Energy Usage: 3.5 kW × 24h = 84 kWh/day
- Electricity Cost @ $0.01/kWh: 84 × $0.01 = $0.84/day
- Estimated Daily Revenue: ≈ $6.75 (via MiningNow.com)
- Estimated Net Profit: $6.75 – $0.84 = $5.91/day
Conclusion
The Antminer KS3 delivers industry-leading performance in Kaspa mining, boasting 9.4 TH/s at 3500 W, powered by optimized ASIC chips and an efficient cooling system. While electricity consumption is higher than lighter units, its raw KAS output and profitability make it a dominant force in 2025.
If Kaspa continues to grow as a fast, scalable, and decentralized PoW platform, the KS3 stands out as a future-proof investment for serious miners with access to affordable power.