An Overview of the Product
The Antminer S21+ Hyd series by Bitmain sets a new benchmark for SHA-256 mining. Engineered for Bitcoin (BTC), Bitcoin Cash (BCH), and Bitcoin SV (BSV), these liquid-cooled ASIC miners deliver industry-leading efficiency (15 J/TH) while minimizing noise and heat. With three models (319T, 358T, and 395T), users gain scalable hash rates ranging from 319 TH/s to 395 TH/s, making them ideal for both professional miners and large-scale operations.
Key Specifications
| Model | Hash Rate (TH/s) | Power (W) | Efficiency (J/TH) | Release Date | Dimensions (mm) | Weight (kg) | Noise Level (dB) | Interface | Voltage (V) |
|---|---|---|---|---|---|---|---|---|---|
| S21+ Hyd 319T | 319 TH/s | 4,785 W | 15 J/TH | Feb 2025 | 410×170×209 | 14.5 kg | 50 dB | Ethernet | 380–415V |
| S21+ Hyd 358T | 358 TH/s | 5,370 W | 15 J/TH | Feb 2025 | 410×170×209 | 14.5 kg | 50 dB | Ethernet | 380–415V |
| S21+ Hyd 395T | 395 TH/s | 5,925 W | 15 J/TH | Feb 2025 | 410×170×209 | 14.5 kg | 50 dB | Ethernet | 380–415V |
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Algorithm: SHA-256
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Supported Coins: BTC, BCH, BSV
Performance Metrics
| Model | Daily Profit (Est.) * | Hash Rate (TH/s) | Power Cost (24h @ $0.10/kWh) | Net Profit (Est.) * |
|---|---|---|---|---|
| 319T | $6.42 | 319 TH/s | $11.48 | $4.94 |
| 358T | $7.50 | 358 TH/s | $12.89 | $5.39 |
| 395T | $8.75 | 395 TH/s | $14.22 | $6.47 |
*Based on current BTC price ($64,000) and difficulty.
Audience That Fits
| User Type | Why It’s Ideal |
|---|---|
| Professional Miners | Maximize ROI with high hash rates (up to 395 TH/s) and liquid cooling stability. |
| Mining Farms | Optimized for scalable operations, reducing downtime with advanced cooling. |
| High-Efficiency Seekers | 15J/TH efficiency ensures low power waste, ideal for high-electricity-cost regions. |
Important Things to Remember
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Cooling System Requires Deionized Water—Maintain pH (6.5–9.5) for longevity.
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Needs 3-Phase Power (380–415 V) – Standard home circuits cannot accommodate this system.
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Operation Environment—5–40°C 10–90% humidity.
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Profitability Fluctuates—Monitor BTC price & difficulty for ROI estimates.
Why the Antminer S21+ Hyd is a Must-Buy
Bitmain’s S21+ Hyd combines raw power and unmatched efficiency (15 J/TH), making it one of the most profitable SHA-256 miners in 2025. The hydro-cooling system slashes noise and overheating risks, ensuring 24/7 reliability for mining farms. Whether you prioritize hash rate (395T), efficiency (15J/TH), or stability, this series delivers top-tier performance.
Frequently Asked Questions
1. What’s the best S21+ Hyd model for home miners?
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The 319T is slightly more suitable if cooling is controlled, but most home miners prefer air-cooled models due to simpler setups.
2. How does hydro-cooling improve mining?
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It extends hardware life, reduces noise (50 dB), and sustains peak performance by preventing thermal throttling.
3. What’s the break-even time for the 395T model?
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At $8.75/day profit (current estimate) and a $5,000 unit cost, ROI is ~18 months before power costs.
4. Can I mine Dogecoin with the S21+ Hyd?
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No, it only supports SHA-256 coins (BTC, BCH, BSV).
5. Where can I buy authentic S21+ Hyd miners?
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Bitmain’s official store or authorized resellers like UnistarMiner and Apexto Mining.
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