The Antminer S21+ 216T–235T series represents the latest advancement in SHA-256 mining technology. The 235 TH/s model is the highest-tier variant in the “Plus” lineup, engineered to squeeze every ounce of performance from its high-binned chips. By bridging the gap between the standard S21 and the water-cooled XP models, the S21+ 235T offers an elite mining solution that integrates easily into existing air-cooled infrastructures.
Elite 16.5 J/TH Power Efficiency
Efficiency is the cornerstone of mining profitability. The S21+ 235T operates with a power consumption of approximately 3877W, achieving a lean 16.5 J/TH (0.0165 J/GH). This efficiency rating ensures that your operational costs per Bitcoin mined remain low, allowing for a faster ROI and greater resilience against price volatility and network difficulty adjustments.
Advanced Thermal Engineering & Stability
To sustain a consistent 235 TH/s hashrate, Bitmain has upgraded the thermal management system:
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High-Flow Quad Fan Setup: Four industrial-grade fans provide high-static pressure airflow to dissipate heat rapidly across the dense hash boards.
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Intelligent Temperature Control: The onboard firmware dynamically adjusts fan speeds and chip voltage to prevent thermal throttling and ensure a stable mining output.
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Industrial Build Quality: The S21+ is housed in a reinforced aluminum chassis, designed to operate 24/7 in professional environments with temperatures ranging from 0°C to 45°C.
Technical Specifications Overview
| Feature | Specification |
| Manufacturer | Bitmain |
| Model | Antminer S21+ (235 TH/s) |
| Algorithm | SHA-256 (BTC, BCH, BSV) |
| Hashrate | 235 TH/s ±3% |
| Power Consumption | 3877W ±5% |
| Power Efficiency | 16.5 J/TH |
| Cooling | 4 x High-Speed Air Fans |
| Voltage Input | 220V – 277V |
| Dimensions | 450mm x 219mm x 293mm |
| Net Weight | 21.5 kg |
Why Buy the S21+ 235T from CryptoMiners24?
When you invest in flagship hardware, you need a partner that guarantees quality and reliability. CryptoMiners24 offers:
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Verified Original Hardware: We supply 100% genuine, factory-new Bitmain units with full manufacturer warranties.
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Insured Global Logistics: Fast and secure shipping via DHL and FedEx to North America, Europe, and Asia.
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Secure Crypto Payments: Pay using Bitcoin (BTC), USDT, or Bank Wire for a fast and private checkout experience.
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Expert Pre-Sales Advice: Not sure if your electrical setup can handle 3877W? Our experts are available to help you prepare your facility for the S21+ series.
Pro Tip: The Antminer S21+ 235T requires a C19 power cable and a 220V-277V power source. Due to its 3877W power draw, ensure your circuit can handle at least 20 Amps to prevent overloading.
