The Bitmain Antminer S21 XP Hyd (473Th) is one of the most advanced hydro-cooled ASIC miners on the market, engineered for high-efficiency Bitcoin mining. With a powerful hashrate and cutting-edge cooling technology, this model is designed for serious miners looking to maximize returns while minimizing noise and thermal output. In this comprehensive guide, we’ll explore its performance, profitability, energy efficiency, and where to find the best available prices in 2025.
Key Features and Performance
The Antminer S21 XP Hyd is built around the SHA-256 algorithm, making it ideal for mining Bitcoin (BTC), Bitcoin Cash (BCH), and Bitcoin SV (BSV). It delivers a maximum hashrate of 473 terahashes per second (Th/s), with a power consumption of 5,676 watts, achieving an impressive energy efficiency of 12 joules per terahash (J/Th).
This level of efficiency places the S21 XP Hyd among the top-tier ASIC miners available today—especially when factoring in its hydro-cooling system, which drastically reduces noise and heat compared to traditional air-cooled models.
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Technical Specifications
- Manufacturer: Bitmain
- Model: Antminer S21 XP Hyd (473Th)
- Release Date: November 2024
- Hashrate: 473 Th/s ±5%
- Power Consumption: 5,676W ±5%
- Efficiency: 12 J/Th
- Cooling Method: Hydro-cooling
- Noise Level: 50 dB (significantly quieter than air-cooled counterparts)
- Dimensions: 410 x 170 x 209 mm
- Operating Temperature: 5°C to 45°C
- Humidity Range: 5% to 95% (non-condensing)
- Network Interface: Ethernet
Hydro-cooling allows for more stable operation in dense mining farms and enables deployment in environments where heat dissipation is a concern. The reduced noise also makes it suitable for facilities near residential or office areas.
Mining Profitability Analysis
One of the most critical factors in selecting a mining rig is profitability. Let’s break down what you can expect from the Antminer S21 XP Hyd under current market conditions.
Assuming:
- Bitcoin price: $60,000
- Electricity cost: $0.06 per kWh
- Network difficulty: Stable
Under these conditions, the daily revenue is approximately $48–$52, with monthly earnings ranging between $1,440 and $1,560. After deducting electricity costs (~$8.17 per day), net profit comes in around **$1,200–$1,300 per month**.
Even with fluctuating BTC prices and network difficulty adjustments, the S21 XP Hyd remains highly competitive due to its superior efficiency. Over a 12-month period, ROI can be achieved within 8–11 months, depending on purchase price and operational costs.
Pro Tip: For maximum profitability, pair this miner with low-cost renewable energy sources or locate operations in regions with subsidized industrial power rates.
Where to Buy the Antminer S21 XP Hyd – Best Prices & Vendors
As of 2025, the Bitmain Antminer S21 XP Hyd is available through several trusted vendors globally. Below are some of the best deals currently offered:
- YesMining – $8,900 (Asia, Hong Kong) – In stock
- Apexto Mining – $8,900 (Asia, Hong Kong) – In stock
- Letine Mining – $8,999 (Asia, China) – In stock
- HSasicminer – $9,792 (Asia, China) – In stock
- UMiners – $9,696 (Asia, Hong Kong) – In stock
In Europe:
- Miners.de – €9,999 (~$10,800) – In stock
- MaxiMiners – $9,999 – In stock
In the Americas:
- BT-Miners – $4,199 (potential typo or limited-time offer; verify authenticity*)
- August Mining – $11,032 – In stock
Note: Always verify vendor credibility before purchasing. Look for user reviews, warranty terms, and shipping options.
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Frequently Asked Questions (FAQ)
Is the Antminer S21 XP Hyd worth it in 2025?
Yes. With its 12 J/Th efficiency and hydro-cooling design, the S21 XP Hyd offers strong long-term value for large-scale mining operations and eco-conscious investors aiming to reduce thermal footprint.
Can I use this miner for coins other than Bitcoin?
Yes. Since it uses the SHA-256 algorithm, it can mine any SHA-256-based cryptocurrency such as Bitcoin Cash (BCH) and Bitcoin SV (BSV). However, Bitcoin remains the most profitable due to higher network value and liquidity.
How does hydro-cooling improve performance?
Hydro-cooling removes heat more efficiently than air cooling, allowing the miner to maintain optimal temperatures even under continuous load. This improves stability, extends hardware lifespan, and reduces noise levels—critical for data centers and urban deployments.
What is the expected lifespan of the Antminer S21 XP Hyd?
With proper maintenance and operating conditions, ASIC miners like the S21 XP Hyd typically last 3 to 5 years. Regular firmware updates from Bitmain also help extend usability as network demands evolve.
Do I need a special setup for hydro-cooled miners?
Yes. Hydro-cooled units require a closed-loop liquid cooling system or integration into a data center’s existing water-cooling infrastructure. Ensure your facility supports this before deployment.
How does electricity cost affect profitability?
Electricity cost is the largest variable expense. At $0.03/kWh, monthly profits can exceed $1,400; at $0.10/kWh, net profit drops to around $900. Always calculate your local rate before investing.
Final Thoughts
The Bitmain Antminer S21 XP Hyd (473Th) represents a leap forward in ASIC mining technology. Its combination of high hashrate, ultra-efficient power usage, and quiet hydro-cooling makes it a top choice for professional miners in 2025.
Whether you're expanding an existing mining farm or starting fresh, this model offers solid ROI potential and future-ready performance.
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