The Antminer S21 XP is the definitive choice for miners who demand peak efficiency without the infrastructure requirements of hydro or immersion cooling. As the premium “XP” variant of the S21 series, it utilizes the highest-binning chips to push hashrate boundaries while maintaining a surprisingly low power profile.
World-Record 13.5 J/TH Air-Cooled Efficiency
The S21 XP is engineered to solve the “efficiency-vs-noise” trade-off. At 13.5 J/TH, it is significantly more efficient than the standard S21 (17.5 J/TH) and the S21 Pro (15 J/TH). This jump in performance means:
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Higher Net Profit: Lower monthly electricity bills for every Terahash produced.
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Thermal Management: Advanced chip architecture generates less waste heat per unit of hashrate, reducing stress on your facility’s HVAC systems.
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Longer Economic Life: Its ultra-low efficiency ensures the S21 XP remains profitable longer as network difficulty and halving events progress.
Robust Design for Industrial Reliability
Bitmain has refined the S21 chassis for maximum durability in professional data centers:
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High-Pressure Quad-Fan System: Four industrial-grade fans ensure a steady laminar flow across the high-density hash boards.
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Intelligent PSU Integration: The built-in APW series power supply is rated for 97%+ efficiency, minimizing energy loss before it even reaches the chips.
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Global Compatibility: Supports a wide input voltage range of 220V-277V, making it compatible with almost any industrial power grid worldwide.
Technical Specifications Overview
| Feature | Specification |
| Manufacturer | Bitmain |
| Model | Antminer S21 XP (270 TH/s) |
| Algorithm | SHA-256 (BTC, BCH, BSV) |
| Hashrate | |
| Power Consumption | |
| Power Efficiency | |
| Cooling Method | Air-cooled (4 Fans) |
| Noise Level | |
| Dimensions | |
| Net Weight | |
| Operating Temp | to |
Why Purchase the Antminer S21 XP from CryptoMiners24?
Investing in flagship hardware requires a reliable partner. CryptoMiners24 guarantees:
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Brand New Factory Stock: 100% genuine Bitmain units with official 365-day manufacturer warranties.
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Fast & Insured Global Shipping: Secure delivery to North America, Europe, and the Middle East via DHL Express.
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Multi-Currency Payments: We accept USDT (TRC20), Bitcoin (BTC), and traditional Bank Wire transfers.
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Technical Onboarding: Our support team is available to assist with pool setup and firmware updates for your new S21 XP fleet.
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Upgrade to the 500T S21 XP+ Hydro for maximum liquid-cooled density.
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Check out the 290T Sealminer A3 Pro for 12.5 J/TH air-cooled competition.
Pro Tip: For optimal performance, the Antminer S21 XP requires dual C19 power cables and a high-voltage outlet (220V+). For home miners, ensure your circuit can handle a continuous load (typically a 25-30A breaker).





