Antminer S21 Pro Immersion Review and Specs 2026
Bitmain · Released 2024-06 · Immersion-cooled Bitcoin ASIC
Full Specifications
| Manufacturer | Bitmain |
| Model | Antminer S21 Pro Immersion |
| Algorithm | SHA-256 |
| Cooling Type | Immersion Cooling |
| Hashrate | 270 TH/s |
| Power Consumption | 3,300 W |
| Efficiency | 12.2 J/TH |
| Noise Level | 30 dB |
| Dimensions | 400×195×290 mm |
| Weight | 14.5 kg |
| Est. Market Price | $4,000 |
| Release Date | 2024-06 |
| Spec Confidence | ⚠ Pending Verification |
Where to Buy Antminer S21 Pro Immersion
Compare prices across trusted ASIC marketplaces. Prices vary — check each source for current availability.
Large used ASIC inventory. Good for budget buyers.
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ROI Analysis
Based on current network difficulty. Assumes Abundant Miners hosting at $225/month flat fee.
Pros & Cons
Pros
- +12.2 J/TH exceptional immersion efficiency
- +270 TH/s strong hashrate
- +Near-silent at 30 dB
- +Best long-term economics at scale with lowest per-TH energy cost
Cons
- −Specs estimated from air-cooled equivalent — pending manufacturer confirmation
- −Requires full immersion tanks and dielectric fluid system
- −Highest total infrastructure investment
- −Very few compatible hosting facilities
Best For / Worst For
Maximum efficiency immersion operations at industrial scale
Anyone without immersion infrastructure — this is the most infrastructure-intensive option
Frequently Asked Questions
Is the Antminer S21 Pro Immersion profitable in 2026?
Profitability depends on live BTC price and network difficulty. At $100,000 BTC the Antminer S21 Pro Immersion generates approximately 14.92 USD per day gross revenue at 270 TH/s. With typical hosted electricity costs, net daily profit depends heavily on your hosting rate. Use our calculator above for your specific scenario.
How much does the Antminer S21 Pro Immersion earn per day?
The Antminer S21 Pro Immersion mines approximately 0.00014921 BTC per day at current network difficulty (~113.7 EH). At $100,000 per BTC that's roughly $15 gross per day before electricity and hosting costs. Check the live calculator above for current BTC price.
What hosting providers support the Antminer S21 Pro Immersion?
The Antminer S21 Pro Immersion uses Immersion Cooling. Compatible hosting providers include Compass Mining, Core Scientific, Sabre56. Abundant Miners is recommended for air-cooled miners at a flat $225/month all-in rate.
What is the efficiency of the Antminer S21 Pro Immersion?
The Antminer S21 Pro Immersion achieves 12.2 J/TH (joules per terahash), meaning it uses 12.2 joules of energy for every terahash of mining power. This is excellent efficiency — among the best available.
Running the numbers on Antminer S21 Pro Immersion?
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