The Bitmain Antminer S21 XP stands at the forefront of next-generation Bitcoin mining hardware, delivering exceptional performance with a robust 270TH/s hashrate and industry-leading energy efficiency. Designed for serious miners seeking maximum output and long-term profitability, this SHA-256 optimized machine represents a significant leap forward in mining technology.
Whether you're scaling your mining operation or entering the space with high-performance equipment, the S21 XP offers a compelling balance of power, efficiency, and durability.
Key Specifications at a Glance
- Hashrate: 270.00 TH/s (typical)
- Power Consumption: 3,645W
- Energy Efficiency: 13.5 J/TH
- Noise Level: 76 dBA @ 30°C
- Algorithm: SHA-256 (ideal for BTC, BCH, BSV)
- Warranty: 365-day factory warranty from Bitmain
- Cooling System: Advanced air-cooling with high-speed fans
- Operating Temperature: -20°C to 45°C
👉 Discover how the Antminer S21 XP can boost your mining returns today.
Performance & Profitability Overview
The Antminer S21 XP achieves an impressive daily profitability of approximately $7.20, depending on current market conditions, electricity rates, and network difficulty. While this figure may vary over time, its high hashrate and low power draw position it as one of the more efficient models available in 2025.
With a typical return on investment (ROI) timeline of around 25.9 months, the S21 XP is best suited for operators with access to low-cost electricity and a long-term mining strategy. Its energy efficiency rating of 13.5 joules per terahash (J/TH) ensures reduced operational costs compared to older or less optimized models.
Why Efficiency Matters
In cryptocurrency mining, energy efficiency directly impacts net profit. Even small improvements in J/TH can result in substantial savings over time—especially when operating multiple units. The S21 XP’s refined chip architecture and optimized power delivery system make it a top contender in modern mining farms.
Technical Features and Design
Hardware Configuration
Equipped with an RJ45 Ethernet 10/100M interface, the S21 XP ensures stable network connectivity for uninterrupted mining operations. Its compact dimensions (449 × 219 × 293 mm without packaging) allow for flexible deployment in both home setups and large-scale data centers.
- Net Weight: 18.7 kg
- Gross Weight: 21.5 kg
- Fan Noise: 76 dBA – comparable to background conversation levels, though best placed in ventilated or isolated areas
Power Requirements
The miner operates on a single-phase power supply with an input voltage range of 220–277V and frequency between 50–60Hz. Maximum input current is rated at 20A, so proper electrical infrastructure is essential to avoid overloads or damage.
⚠️ Note: Incorrect voltage settings may permanently damage the unit. Always verify your local power standards before deployment.
Environmental Tolerance
Built for resilience, the S21 XP functions reliably in environments ranging from -20°C to 45°C. For storage, it can withstand temperatures up to 70°C. Humidity should remain between 10%–90% RH (non-condensing), and operation is safe at altitudes up to 2,000 meters.
At higher elevations (above 900m), the maximum operating temperature decreases by 1°C per additional 300m, ensuring thermal safety under extreme conditions.
Bitmain’s Leadership in Mining Hardware
Since its founding in 2013, Bitmain has remained the global leader in ASIC-based cryptocurrency mining solutions through its flagship Antminer series. With R&D centers in Singapore and operational hubs across Hong Kong, the U.S., Kazakhstan, UAE, and beyond, Bitmain continues to innovate and dominate the market.
Their focus on cutting-edge semiconductor design and thermal management has made Antminers the go-to choice for professional mining farms worldwide.
Antminer S21 XP vs. S21: What’s Improved?
While the standard Antminer S21 already delivers strong performance, the S21 XP variant offers key upgrades:
| Feature | Antminer S21 | Antminer S21 XP |
|---|---|---|
| Hashrate | Up to 264 TH/s | Up to 270 TH/s |
| Power Efficiency | ~14.5 J/TH | 13.5 J/TH |
| Cooling System | Standard air cooling | Enhanced airflow design |
| Firmware Optimization | Basic | Advanced stability & performance tuning |
These enhancements translate into higher daily earnings, lower electricity costs per hash, and improved reliability during sustained operation—making the S21 XP a smarter investment for forward-thinking miners.
👉 See how upgrading your rig can improve ROI with next-gen hardware.
Mining Profitability & Long-Term Viability
Mining success hinges not just on hardware specs but also on external factors like:
- Bitcoin price volatility
- Network difficulty adjustments
- Electricity cost per kWh
- Pool fees and uptime
Using conservative estimates:
- At $0.06/kWh electricity cost: Monthly profit ≈ $216
- At $0.10/kWh: Monthly profit drops to ~$144
This highlights the importance of securing low-cost power—ideally below $0.08/kWh—for sustainable operations.
Additionally, while all sales are final post-shipping, manufacturers like Bitmain offer repair and replacement services under warranty for defective units, adding peace of mind for bulk buyers.
Shipping & Delivery Information
New Antminer S21 XP units ship from Shenzhen or Hong Kong warehouses via DHL or UPS, with delivery times averaging 5–10 business days internationally. Orders are processed within 3–7 business days after payment verification.
Pre-orders may experience slight delays due to manufacturer batch releases, but in-stock items ship promptly.
All shipments include tracking information sent via email upon dispatch.
Frequently Asked Questions (FAQs)
What is the expected lifespan of the Antminer S21 XP?
With proper maintenance, adequate ventilation, and stable power input, the Antminer S21 XP can operate efficiently for 3 to 5 years. Dust accumulation, overheating, and voltage fluctuations are the primary causes of premature failure—regular cleaning and environmental control can significantly extend its life.
How does electricity cost affect mining profitability?
Electricity is the largest ongoing expense in mining. For example, running the S21 XP at $0.10/kWh consumes about $8.75 worth of power per day. If daily revenue falls below that due to low BTC prices or high difficulty, mining becomes unprofitable. Always calculate break-even points before deployment.
Can I use the Antminer S21 XP for coins other than Bitcoin?
Yes—the S21 XP supports any cryptocurrency using the SHA-256 algorithm, including Bitcoin Cash (BCH) and Bitcoin SV (BSV). However, Bitcoin remains the most profitable and liquid option in most cases.
Is there a warranty on new miners?
Yes—Bitmain provides a 365-day factory warranty on brand-new Antminer S21 XP units. This covers manufacturing defects and includes repair or replacement services through authorized support channels.
What payment methods are accepted?
Accepted payments include credit/debit cards (with possible processing fees), bank wire transfers, ACH transfers via secure portal, and select cryptocurrencies. Prices are listed in USD and may fluctuate based on market conditions.
Do I need special setup for multiple miners?
For multi-unit deployments, ensure sufficient power distribution units (PDUs), cooling capacity, and network bandwidth. Industrial racks and dedicated circuits are recommended for farms with 10+ units to maintain stability and safety.
Final Thoughts: Is the Antminer S21 XP Worth It?
For miners focused on performance, efficiency, and long-term gains, the Antminer S21 XP is among the most competitive options in 2025. With a powerful 270TH/s output, excellent energy efficiency (13.5 J/TH), and strong build quality backed by Bitmain’s reputation, it's engineered to deliver consistent results.
Core keywords: Antminer S21 XP, Bitcoin miner, SHA-256, 270TH/s, energy-efficient mining, Bitmain, mining profitability, ASIC miner
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