Bitmain Antminer S21j XP Hydro Bitcoin Miner
The Bitmain Antminer S21j XP Hydro delivers 495 TH/s of SHA-256 mining performance at 5940 W, with rated efficiency of 12 J/TH. Hydro cooling and a 380–415 V three-phase supply make it suited to sites equipped for liquid-cooled Bitcoin mining.
$5,395.50
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Overview
Bitark offers the Antminer S21j XP Hydro in the 495 TH/s configuration for Bitcoin mining. Its 5940 W rated draw gives operators a concrete starting point for electrical capacity and running-cost calculations. At that draw, continuous operation uses approximately 142.56 kWh per day before external cooling equipment is included.
Plan the installation around a dedicated coolant circuit, suitable electrical distribution and wired Ethernet. Confirm rack clearance, hose routing and heat-rejection capacity before delivery; the miner needs supporting infrastructure to operate.
Rated power and efficiency apply at a 35 °C coolant inlet. Typical hashrate tolerance is ±3%, while power and efficiency tolerance is ±5%. Allow headroom when sizing the installation rather than treating nominal consumption as a maximum.
The available option is 495Th/s – In Stock. Contact us before ordering to confirm the included connections and accessories, destination delivery arrangements and warranty coverage.
Specification
| Manufacturer | Bitmain |
| Model | Antminer S21j XP Hydro — 495 TH/s |
| Also known as | Antminer S21j XP Hyd. |
| Release | March 2026 |
| Weight | 16.2 kg |
| Size | 430 × 176 × 208 mm |
| Noise level | 50db |
| Voltage | 380–415 V AC, three-phase |
| Power | 5940 W |
| Interface | RJ45 Ethernet 10/100M |
| Temperature | 20–50 °C |
| Warranty | 12 months |
Bitmain Antminer S21j XP Hydro FAQs
It uses SHA-256 for Bitcoin mining and also supports Bitcoin Cash and Bitcoin SV. Choose a pool that supports your intended coin and configure its connection details before starting.
The S21j XP Hydro requires 380–415 V AC three-phase power. Have a qualified electrician assess the circuit, protection, grounding and connector arrangement for the 5940 W load before installation.
Provide 8–10 L/min coolant flow at no more than 3.5 bar, with an inlet temperature of 20–50 °C. Confirm coolant chemistry and maintenance requirements before filling the circuit.
At 5940 W, the miner uses approximately 142.56 kWh over 24 hours of continuous operation. Multiply that by your electricity tariff, then add consumption from pumps and heat-rejection equipment. Actual draw varies with operating conditions.
Assess the complete installation before choosing a location. Pumps and external heat-rejection equipment contribute to sound, so hydro cooling alone does not establish a room's noise level. Contact us to discuss acoustic requirements for your site.
Select 495Th/s – In Stock and confirm your site's three-phase supply, coolant circuit and Ethernet connection. Ask us to confirm included accessories, dispatch arrangements and the warranty duration, start date and coverage for your order.
Main Parameters
| Mineable Coins | Bitcoin |
|---|---|
| Algorithm | SHA-256 |
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Company Name: Bitark Company Limited
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Company Number: 79945110
Phone: +86-15899784871
Email: info@bitark.io
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