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The Bitmain Antminer S21 Hydro series is Bitmain's baseline liquid-cooled SHA-256 mining platform, delivering reliable hashrate with hydro cooling and industry-leading noise reduction to approximately 50 dB across the lineup.
Bitmain Antminer S21 Hyd
The S21 Hyd serves as the standard model of Bitmain's S21 hydro-cooled platform, delivering reliable 335 TH/s SHA-256 mining performance and an energy efficiency of 16.0 J/TH.
Core Specifications
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Hashrate / Power Consumption / Energy Efficiency: 335 TH/s 5360 W 16.0 J/T
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Dimensions: 339 × 163 × 207 mm (bare unit) / 570 × 316 × 430 mm (packaged)
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Weight: 12.3 kg (net) / 13.6 kg (gross)
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Noise Level: 50 dB (hydro cooled)
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Voltage / Frequency / Current: 380–415V AC 50/60 Hz 12 A (three-phase)
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Network Interface: RJ45 Ethernet 10/100M
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Cooling Requirements: Inlet temperature 20–50°C Flow rate 8.0–10.0 L/min Pressure ≤ 3.5 bar Medium: antifreeze / pure water / deionized water Fitting diameter OD10
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Environmental Requirements: Operating temperature -20–45°C Storage temperature -20–70°C Humidity 10–90% RH (non-condensing) Operating altitude ≤ 2000 m
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Warranty Period: 365 days
Bitmain Antminer S21+ Hyd
The S21+ Hyd is the efficiency-optimized model of Bitmain's S21 hydro-cooled platform, delivering 319 TH/s SHA-256 mining performance at a leading 15.0 J/TH — the best energy efficiency in the S21 Hydro series.
Core Specifications
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Hashrate / Power Consumption / Energy Efficiency: 319 TH/s 4785 W 15.0 J/T
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Dimensions: 339 × 173 × 207 mm (bare unit) / 570 × 316 × 430 mm (packaged)
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Weight: 13.5 kg (net) / 15 kg (gross)
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Noise Level: 50 dB (hydro cooled)
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Voltage / Frequency / Current: 380–415V AC 50/60 Hz 12 A (three-phase)
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Network Interface: RJ45 Ethernet 10/100M
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Cooling Requirements: Inlet temperature 20–50°C Flow rate 8.0–10.0 L/min Pressure ≤ 3.5 bar Medium: antifreeze / pure water / deionized water Fitting diameter OD10
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Environmental Requirements: Operating temperature -20–45°C Storage temperature -20–70°C Humidity 10–90% RH (non-condensing) Operating altitude ≤ 2000 m
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Warranty Period: 365 days
Bitmain Antminer S21e Hyd
The S21e Hyd is the entry-level model of Bitmain's S21 hydro-cooled platform, delivering 288 TH/s SHA-256 mining performance at 17.0 J/TH — the lowest acquisition cost per terahash for fleet-scale hydro deployments.
Core Specifications
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Hashrate / Power Consumption / Energy Efficiency: 288 TH/s 4896 W 17.0 J/T
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Dimensions: 339 × 176 × 208 mm (bare unit) / 570 × 316 × 430 mm (packaged)
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Weight: 12.8 kg (net) / 14.1 kg (gross)
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Noise Level: 50 dB (hydro cooled)
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Voltage / Frequency / Current: 380–415V AC 50/60 Hz 12 A (three-phase)
-
Network Interface: RJ45 Ethernet 10/100M
-
Cooling Requirements: Inlet temperature 20–50°C Flow rate 8.0–10.0 L/min Pressure ≤ 3.5 bar Medium: antifreeze / pure water / deionized water Fitting diameter OD10
-
Environmental Requirements: Operating temperature -20–45°C Storage temperature -20–70°C Humidity 10–90% RH (non-condensing) Operating altitude ≤ 2000 m
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Warranty Period: 365 days
