Antminer S21XP Hydro – Bitmain’s Most Efficient Water-Cooled Bitcoin Miner

Category
Manufacturer BITMAIN
Model S21 XP Hyd.
Crypto algorithm/coins SHA256|BTC/BCH/BSV
Typical hashrate, TH/s(2-1) 473
Power on wall @35℃(2-2), Watt(2-1) 5676
Power efficiency on wall@35℃(2-2), J/T(2-1) 12
Phase 3
Input voltage, Volt(3-1) 380~415
Input frequency range, Hz 50~60
Input max current, Amp 12
Networking connection mode RJ45 Ethernet 10/100M

Additional information

Antminer S21XP Hydro Review – Bitmain’s Most Efficient Water-Cooled Bitcoin Miner

Key Features & Overview

The Antminer S21XP Hydro by Bitmain is a next-generation water-cooled Bitcoin miner, delivering 335TH/s hash rate at an industry-leading energy efficiency of 17.5J/TH. Designed for large-scale mining farms, it combines high performancelow power consumption, and advanced hydro cooling for maximum profitability.

🔥 Why Choose the S21XP Hydro?
✔ 335TH/s Hash Rate – Higher mining output vs. air-cooled rigs
✔ Ultra-Low Power Efficiency – Just 17.5J/TH, reducing electricity costs
✔ Hydro Cooling System – Silent, stable, and extends hardware lifespan
✔ SHA-256 Algorithm – Mines BTC, BCH, and other SHA-256 coins


Antminer S21XP Hydro Specifications

Manufacturer BITMAIN
Model S21 XP Hyd.
Crypto algorithm/coins SHA256|BTC/BCH/BSV
Typical hashrate, TH/s(2-1) 473
Power on wall @35℃(2-2), Watt(2-1) 5676
Power efficiency on wall@35℃(2-2), J/T(2-1) 12
Phase 3
Input voltage, Volt(3-1) 380~415
Input frequency range, Hz 50~60
Input max current, Amp 12
Networking connection mode RJ45 Ethernet 10/100M
Server size (length*width*height, w/o package), mm 339*173*207
Server size (length*width*height, with package), mm 570*316*430
Net weight, kg 13.8
Gross weight, kg 15.7
nlet coolant temperature, °C 20~50
Coolant flow, L/min 8.0~10.0
Coolant pressure, bar ≤3.5
Working coolant(3-2) Antifreeze/Pure water/Deionized water
Coolant pH value Antifreeze: 7.0~9.0
Pure water: 6.5~7.5
Deionized water:8.5~9.5
Diameter of coolant pipe connector, mm OD10
Storage temperature, °C -20~70
Operation humidity(non-condensing), RH 10~90%

Notes:

(2-1) The hashrate value, power on wall, and power efficiency on wall are all typical values. The actual hashrate value fluctuates by ±3%, and the actual power on wall and power efficiency on wall fluctuate by ±5%.

(2-2) Inlet coolant temperature.

(3-1) Caution: Wrong input voltage may cause server damaged.

(3-2) For detailed working coolant use and maintenance instructions, please refer to “ANTSPACE HK3 Water Cooling Container & Dry-Wet Tower Product Manual”, Chapter 9, Article 3, Point 6, “Maintenance of Coolant”!


Antminer S21XP Hydro vs. Competitors (2024)

Miner Model Hash Rate Efficiency (J/TH) Cooling
Antminer S21XP Hydro 335TH/s 17.5 Water
Bitmain S19XP (Air) 141TH/s 21.5 Air
Whatsminer M56S 220TH/s 22.0 Air
Canaan A1266 130TH/s 25.0 Air

✅ S21XP Hydro Wins With:

  • ~20% Lower Power Costs vs. air-cooled miners
  • Higher Long-Term Profitability due to efficiency
  • Ideal for Industrial Mining Farms

Who Should Buy the Antminer S21XP Hydro?

1. Large-Scale Mining Farms

  • Water cooling enables high-density setups without overheating risks.
  • Lower maintenance costs vs. air-cooled alternatives.

2. Miners in High-Electricity-Cost Regions

  • 17.5J/TH efficiency maximizes ROI in areas with expensive power.

3. Eco-Conscious Mining Operations

  • Reduced energy waste = smaller carbon footprint.

FAQ – Antminer S21XP Hydro

❓ Does the S21XP Hydro require extra cooling equipment?

Yes, it needs a water cooling loop (pumps, radiators, or cooling towers).

❓ Is it good for home mining?

No—this miner is built for industrial-scale operations, not residential use.

❓ What’s the warranty period?

Standard 365-day warranty

Shipment

Location:

Miner Source has two warehouses: Shenzhen and Hong Kong warehouse.

Shipping instructions:

  • All mining machine products are shipped in original packaging.
  • For large and overweight products such as immersion cooling products, water coolers, mobile mining, immersion cooling accessories, etc., please contact our website customer service to calculate the postage before placing an order.

Shipping details:

1 – Packaging details: carton packing per unit

2 – Worldwide delivery (Customer Request Acceptable): UPS, DHL, FedEx, EMS, TNT and Special Express Line (double-clear tax lines and door-to-door service for countries such as Thailand and Russia)

3 – Port: Shenzhen or Hong Kong

4 – Lead time: in 7 days after payment

Note: If you have any questions about the logistics information, please contact us immediately. We will track your shipment and get back to you as soon as possible.

How to Setup Bitmain Antminer S21XP Hydro?

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We will contact you within 3 hours, please pay attention to the email with the suffix “@minersource.shop”.