Here are the complete technical specifications for the Bitmain Antminer S21+ Hydro.
| Specification | Details |
|---|---|
| Manufacturer | Bitmain |
| Model | Antminer S21+ Hydro (319/358/395Th) |
| Release Date | February 2025 |
| Hashrate | 319 / 358 / 395 Th/s |
| Power Consumption | 4785W |
| Energy Efficiency | 15 J/Th |
| Algorithm | SHA-256 |
| Supported Coins | Bitcoin (BTC) |
| Cooling System | Hydro-Cooling |
| Noise Level | 50 dB |
| Voltage | 380 – 415 V |
| Interface | Ethernet |
| Dimensions | 410 x 170 x 209 mm |
| Operating Temperature | 5 – 40 °C |
| Operating Humidity | 10 – 90 % |
Unleash the pinnacle of Bitcoin mining efficiency with the Bitmain Antminer S21+ Hydro. Engineered for professional mining operations, this hydro-cooled powerhouse delivers a staggering maximum hash rate of 395 Th/s while achieving an industry-leading energy efficiency of 15 J/Th.
By utilizing advanced hydro-cooling technology, the S21+ Hydro maintains optimal operating temperatures, ensuring enhanced stability, superior performance, and an incredibly low noise level of just 50dB. Designed for integration with the ANTRACK V1 hydro cooling cabinet, this miner is the definitive solution for large-scale mining farms aiming to maximize profitability and hash power.
Unmatched Hash Rate: Dominate the SHA-256 algorithm with a versatile hash rate of 319T, 358T, or 395Th/s.
Elite Energy Efficiency: Achieve a groundbreaking 15 J/Th, significantly reducing operational costs.
Advanced Hydro-Cooling: Ensures superior heat dissipation for enhanced chip stability, longevity, and performance.
Quiet Operation for its Class: At only 50dB, it operates far more quietly than traditional air-cooled industrial miners.
Professional Grade: Requires a 380-415V power supply and a compatible cooling loop, built for serious mining operations.
The S21+ Hydro requires a specific cooling infrastructure for optimal operation. Please ensure your setup meets these requirements.
| Cooling Parameter | Specification |
|---|---|
| Coolant Flow Rate | 8.0 ~ 10.0 L/min |
| Coolant Pressure | ≤ 3.5 bar |
| Compatible Coolants | Antifreeze, Pure Water, Deionized Water |
| Coolant PH Value | Antifreeze: 7.0~9.0 Pure Water: 6.5~7.5 Deionized Water: 8.5~9.5 |
| Recommended Cabinet | ANTRACK V1 Hydro Cooling Cabinet |
Hydro-cooling isn’t just about staying quiet; it’s about maximizing your investment.
Enhanced Stability: Consistent, lower operating temperatures prevent thermal throttling, ensuring your miner runs at peak performance 24/7.
Improved Longevity: By drastically reducing heat stress on the ASIC chips, hydro-cooling extends the operational life of your hardware.
Superior Efficiency: Cooler chips run more efficiently, directly contributing to the industry-leading 15 J/Th performance metric.
Density & Scalability: Hydro-cooled systems allow for higher-density farm layouts without the massive airflow requirements of air-cooled setups.
The Antminer S21+ Hydro is not a plug-and-play home unit. It is a specialized tool for professional miners who understand the infrastructure requirements.
High-Voltage Operation: Requires a 380-415V industrial power circuit.
Cooling Loop Integration: Must be installed into a closed-loop cooling system with precise flow and pressure controls.
Farm Optimization: Perfect for miners looking to scale their operations with the most efficient hardware on the market, minimizing electricity costs per terahash.
Q: What is the difference between the 319T, 358T, and 395T models?
A: These represent different performance bins of the same hardware. The hash rate can vary based on the unit’s specific silicon quality and operating conditions, with a maximum potential of 395 Th/s.
Q: Can I run this miner without a hydro cooling system?
A: No. The Antminer S21+ Hydro is designed exclusively for hydro-cooling and will not function without being properly integrated into a compatible cooling loop like the ANTRACK V1.
Q: What kind of power supply do I need?
A: This miner requires a high-voltage input of 380-415V. Standard 110V/220V residential outlets are not sufficient. Please ensure your mining facility has the appropriate electrical infrastructure.
Q: Is the coolant included with the miner?
A: No, the miner is sold as a unit. Coolant and the necessary cooling cabinet/loop components must be sourced separately to meet the specified requirements.
Elevate your mining operation to the next level of efficiency and power. The Bitmain Antminer S21+ Hydro is the future of professional, large-scale Bitcoin mining.
Click [Add to Cart] now to secure the most efficient hydro-cooled miner on the market!




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