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Antminer S21+ Bitcoin Miner 216T H/s – The Ultimate 2025 Mining Powerhouse
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The Bitmain Antminer S21+ 216TH/s) is one of the most advanced Bitcoin miners available in 2025. With its industry-leading efficiency, high hash rate, and cutting-edge 5nm chip technology, it sets a new standard for profitability and performance in the competitive world of cryptocurrency mining.
In this in-depth review, we’ll cover:
✅ Key Specifications & Features
✅ Performance & Efficiency Analysis
✅ Profitability & ROI Calculations
✅ Comparison with Other Top Miners (S21, S19 XP, etc.)
✅ Pros & Cons – Is It Worth Buying?
✅ Setup & Maintenance Tips
✅ Final Verdict – Who Should Buy It?
1. Bitmain Antminer S21+ 216T – Key Specifications
| Specification | Details |
|---|---|
| Model | Bitmain Antminer S21+ 216 T |
| Hash Rate | 216 TH/s (Terahashes per second) |
| Power Consumption | 3780W (at the wall) |
| Power Efficiency | 17.5 J/TH (Joules per Terahash) |
| Algorithm | SHA-256 (Bitcoin, Bitcoin Cash) |
| Chip Technology | 5nm ASIC (Most advanced in 2025) |
| Cooling System | Dual-fan air cooling |
| Noise Level | 75 dB (Moderate noise, best for farms) |
| Operating Temp. | 0°C to 40°C (Optimal performance) |
| Dimensions | 370 x 195 x 290 mm |
| Weight | 14.4 kg |
| Power Supply | Not included (Requires 380V PSU) |
| Warranty | 6 months (Bitmain standard) |
Why These Specs Matter?
- 216TH/s Hash Rate: One of the fastest Bitcoin miners available.
- 17.5 J/TH Efficiency: Lower electricity costs = higher profits.
- 5nm Chip: More power-efficient than older models (7nm, 10nm).
- Air Cooling: Reliable and easier to maintain than liquid cooling.
2. Performance & Efficiency – How Good Is It?
✅ Hash Rate Stability
- The S21+ consistently delivers 216TH/s with minimal fluctuations.
- Unlike older models (S19 series), it doesn’t throttle under high temperatures.
✅ Power Efficiency (17.5 J/TH)
- Compared to competitors:
- Antminer S19 XP (21 J/TH) – Less efficient
- Whatsminer M60S (22 J/TH) – Higher power draw
- Avalon A1266 (29 J/TH) – Much less efficient
✅ Cooling & Noise
- Dual-fan system keeps temps stable even in hot climates.
- 75 dB noise level – Not ideal for home mining (best for farms).
3. Bitmain Antminer S21+ 216T Profitability & ROI – Is It Worth It?
💰 Bitmain Antminer S21+ 216T Estimated Daily Earnings (April 2025)
| Electricity Cost | Daily Profit (BTC) | Daily Profit (USD) |
|---|---|---|
| $0.07/kWh | 0.00045 BTC | $18.50 |
| $0.10/kWh | 0.00038 BTC | $15.20 |
| $0.15/kWh | 0.00025 BTC | $10.00 |
(Based on BTC price: $41,000, mining difficulty: 85T)
📈 ROI (Return on Investment) Estimate
- Current Price: ~$4,500 (varies by supplier)
- Break-even time: 8-12 months (depending on electricity costs).
Best for:
✔ Large-scale mining farms
✔ Miners with cheap electricity (<$0.10/kWh)
✔ Investors looking for long-term mining efficiency
4. Comparison: Antminer S21+ vs. Other Top Miners
| Model | Hash Rate | Efficiency | Power Use | Price | Best For |
|---|---|---|---|---|---|
| Antminer S21+ | 216 TH/s | 17.5 J/TH | 3780W | ~$4,500 | Most efficient |
| Antminer S21 | 200 TH/s | 18.5 J/TH | 3700W | ~$4,000 | Budget option |
| Antminer S19 XP | 140 TH/s | 21 J/TH | 3010W | ~$3,200 | Entry-level |
| Whatsminer M60S | 180 TH/s | 22 J/TH | 3960W | ~$4,200 | High hash rate |
| Avalon A1266 | 130 TH/s | 29 J/TH | 3770W | ~$2,800 | Low budget |
Which One Should You Buy?
- Best Overall: S21+ (216TH/s, 17.5 J/TH)
- Budget Pick: S19 XP (140TH/s, $3,200)
- High Hash Rate Alternative: Whatsminer M60S (180TH/s)
5. Pros & Cons – Should You Buy It?
✔ Pros:
✅ Unmatched efficiency (17.5 J/TH) – Saves on electricity
✅ 216TH/s hash rate – One of the fastest miners
✅ 5nm chip technology – More future-proof than older models
✅ Stable performance – No overheating issues
❌ Cons:
❌ Expensive (~$4,500) – High upfront cost
❌ Noisy (75 dB) – Not ideal for home mining
❌ Power supply not included – Need a 380V PSU
Best for:
✔ Large-scale miners
✔ Those with cheap electricity (<$0.10/kWh)
✔ Long-term investors
6. Bitmain Antminer S21+ 216T Setup & Maintenance Tips
🔧 Installation Guide
- Use a 380V power supply (recommended: APW12 from Bitmain).
- Ensure proper ventilation (farms should have cooling systems).
- Connect via Ethernet for stable mining pool access.
- Monitor via Bitmain’s dashboard (firmware updates available).
⚙ Maintenance Tips
✔ Clean dust every 3 months (prevents overheating).
✔ Check fan health (replace if noise increases).
✔ Update firmware (Bitmain releases optimizations).
7. Final Verdict – Who Should Buy the S21+?
🏆 Best For:
- Large mining farms (best efficiency & hash rate).
- Miners with cheap electricity (maximizes profits).
- Long-term investors (5nm chip = longer lifespan).
🚫 Not Ideal For:
- Home miners (too noisy, needs industrial setup).
- Beginners on a budget (high upfront cost).
⭐ Rating: 9.5/10
(Best Bitcoin miner in 2025 for serious miners!)
🚀 Where to Buy?
🔹 Official Bitmain Store (best warranty)
🔹 Authorized resellers (check reviews first)
🔹 Avoid used units (risk of worn-out chips)
Buy Antminer S21+ Bitcoin Miner 216T Now》》》》