The Bitmain Antminer S21 XP stands as one of the most powerful and energy-efficient Bitcoin mining rigs on the market today, delivering a robust hashrate of 270 TH/s while consuming just 3,645 watts. Engineered for maximum performance under demanding conditions, this SHA-256 algorithm-optimized miner is ideal for serious cryptocurrency miners aiming to boost profitability and reduce operational overhead.
With an impressive power efficiency of 13.5 J/TH, the Antminer S21 XP sets a new benchmark in next-generation mining hardware. Whether you're scaling up your mining farm or entering the space with high-performance equipment, this model offers a compelling balance of speed, efficiency, and reliability.
Performance Overview
The Antminer S21 XP excels in both raw computing power and energy optimization:
- Hashrate: 270.00 TH/s (terahashes per second)
- Power Consumption: 3,645W
- Energy Efficiency: 13.5 J/TH
- Estimated Daily Profitability: ~$7.20*
- Return on Investment (ROI): Approximately 25.9 months*
*Based on current network difficulty and average electricity rates; actual values may vary.
👉 Discover how the Antminer S21 XP can maximize your mining returns
Key Features & Technical Specifications
Core Mining Capabilities
Designed specifically for the SHA-256 algorithm, the Antminer S21 XP mines major cryptocurrencies such as:
- Bitcoin (BTC)
- Bitcoin Cash (BCH)
- Bitcoin SV (BSV)
This makes it a versatile choice for miners focused on long-term, high-value blockchain networks with strong market stability.
Hardware Configuration
| Specification | Details |
|---|---|
| Model | S21 XP |
| Network Connection | RJ45 Ethernet (10/100M) |
| Dimensions (without package) | 449 × 219 × 293 mm |
| Package Dimensions | 640 × 360 × 450 mm |
| Net Weight | 18.7 kg |
| Gross Weight | 21.5 kg |
| Noise Level @30°C | 76 dBA |
Despite its industrial-grade performance, the unit operates at a manageable noise level, making it suitable for dedicated mining facilities or well-ventilated private setups.
Power & Environmental Requirements
- Input Voltage Range: 220–277V
- Frequency Range: 50–60 Hz
- Max Input Current: 20A
- Operating Temperature: -20°C to 45°C
- Storage Temperature: -20°C to 70°C
- Operating Humidity (non-condensing): 10%–90% RH
- Maximum Operating Altitude: ≤2,000 meters
⚠️ Note: At altitudes above 900m, the maximum operating temperature decreases by 1°C for every additional 300m due to reduced air density and cooling efficiency.
Why Choose the Antminer S21 XP?
Superior Efficiency Over Predecessors
Compared to the standard Antminer S21, the S21 XP delivers enhanced performance through:
- Higher hashrate (+ up to 15% depending on configuration)
- Improved thermal management with advanced fan systems
- Optimized firmware for consistent output and reduced downtime
- Lower energy consumption per terahash
These upgrades translate into faster block validation, increased revenue potential, and reduced long-term electricity costs—critical factors in maintaining profitability amid fluctuating crypto markets.
Built for Longevity and Reliability
Backed by Bitmain’s 365-day factory warranty, each new Antminer S21 XP undergoes rigorous quality control. As a global leader in ASIC mining technology since 2013, Bitmain has established a reputation for durability, innovation, and customer support across more than 100 countries.
Their R&D centers in Singapore and operational hubs in Hong Kong, the U.S., UAE, Kazakhstan, and beyond ensure ongoing technical support and firmware updates.
Mining Profitability Factors
Several key variables influence your return when using the Antminer S21 XP:
Electricity Costs
Energy expenses are the largest operational cost in mining. With a consumption rate of 3.645 kW/h, profitability hinges on access to low-cost electricity. For example:
- At $0.06/kWh: Monthly power cost ≈ $158 → Viable for profit
- At $0.12/kWh: Monthly power cost ≈ $316 → May erode margins
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Network Difficulty and Coin Volatility
Bitcoin’s mining difficulty adjusts approximately every two weeks, impacting how much reward you earn. Additionally, BTC price volatility affects daily income. Miners should monitor:
- Hashrate trends
- BTC market price
- Pool selection and fees
Even with stable hardware performance, external market dynamics play a major role in net gains.
Shipping, Handling & Support
All new units ship from Bitmain-certified warehouses in Shenzhen or Hong Kong, typically via DHL or UPS, with delivery times ranging from 5–10 business days internationally.
- Orders are processed within 3–7 business days after payment verification
- Tracking details are provided upon dispatch
- DDP (Delivered Duty Paid) available for U.S. customers
- Customers outside the U.S. are responsible for local customs duties and taxes
While all sales are final post-shipping, technical issues are covered under warranty with repair or replacement options available.
Frequently Asked Questions (FAQs)
What is the expected lifespan of the Antminer S21 XP?
With proper maintenance, adequate ventilation, and stable power input, ASIC miners like the S21 XP can operate efficiently for 3 to 5 years. Dust accumulation, overheating, and voltage fluctuations are the primary causes of premature failure.
How does power efficiency impact mining profitability?
Lower J/TH values mean less energy is required per unit of computational work. The S21 XP’s 13.5 J/TH efficiency reduces electricity costs significantly compared to older models (e.g., T19 at ~45 J/TH), directly increasing net profit—especially in regions with higher energy prices.
Can I use the Antminer S21 XP for mining pools?
Yes. The device supports standard Ethernet connectivity and is fully compatible with major mining pools such as F2Pool, Poolin, Slush Pool, and BTC.com. Joining a pool increases the frequency of reward payouts through shared hashing power.
Is the Antminer S21 XP suitable for home mining?
Due to its 76 dBA noise level and heat output, it's not ideal for residential environments unless placed in a sound-dampened, well-cooled room or external enclosure. Commercial data centers or dedicated mining farms provide optimal conditions.
How do I monitor and manage multiple S21 XP units?
You can use Bitmain’s built-in web interface or third-party mining management tools like Awesome Miner or Hive OS to remotely monitor hashrate, temperature, fan speed, and uptime across multiple devices.
Does firmware affect performance?
Absolutely. Regular firmware updates from Bitmain can improve stability, optimize power usage, and enhance compatibility with network changes. Always back up configurations before updating.
Final Thoughts
The Bitmain Antminer S21 XP (270 TH/s) represents a strategic investment for miners prioritizing efficiency, reliability, and long-term output. Its superior J/TH ratio, strong hashrate, and global support infrastructure make it a top contender in modern Bitcoin mining hardware.
As competition intensifies and block rewards diminish over time, having cutting-edge equipment like the S21 XP becomes not just advantageous—but essential.
👉 Stay ahead of the curve—explore next-gen mining solutions today
Note: All prices mentioned exclude taxes and shipping fees unless otherwise stated. Market conditions change frequently; always verify current BTC prices, electricity rates, and network difficulty before calculating ROI.