BITMAIN Antminer S21j XP Hyd 495T Bitcoin Miner

495 TH/s Hydro-Cooled Bitcoin Mining at 12 J/TH

The BITMAIN Antminer S21j XP Hyd 495T is a high-performance hydro-cooled SHA-256 ASIC miner designed for professional Bitcoin mining farms and high-density industrial deployments.

Delivering 495 TH/s of hashrate with a rated power consumption of 5940W, the S21j XP Hyd achieves an energy efficiency of approximately 12 J/TH. Its hydro-cooling architecture helps maintain stable operating temperatures during continuous 24/7 mining.

Key Features

• 495 TH/s rated hashrate
• 5940W rated power consumption
• 12 J/TH energy efficiency
• SHA-256 mining algorithm
• Hydro-cooled thermal management
• 380–415V three-phase power input
• Ethernet network connection
• Designed for industrial mining farms
• Suitable for containerized hydro deployments

Technical Specifications

Performance values are typical ratings measured under specified conditions. Actual hashrate and power consumption may vary according to firmware, coolant temperature, operating mode and site conditions.

High-Density Hydro Mining

With 495 TH/s from a single unit, the S21j XP Hyd allows mining operators to deploy substantial SHA-256 computing power within a limited physical footprint.

Its 12 J/TH efficiency makes it suitable for:

• New hydro-cooled Bitcoin mining farms
• Replacement of older S19 Hydro equipment
• Expansion of existing S21 Hydro fleets
• ANTSPACE and compatible container deployments
• Mining projects with limited electrical capacity
• Long-term fleet efficiency upgrades

Hydro-Cooling Requirements

The Antminer S21j XP Hyd does not use a conventional air-cooling system. It requires a properly engineered external liquid-cooling circuit.

A complete deployment normally requires:

• Compatible hydro mining container or cooling cabinet
• Circulation pumps
• Heat exchanger, dry cooler or cooling tower
• Water treatment system
• Suitable coolant and piping
• Three-phase electrical distribution
• Network and monitoring infrastructure

Recommended coolant flow is approximately 8–10L/min per miner, with coolant pressure not exceeding 3.5 bar.

Electrical Requirements

The S21j XP Hyd requires a 380–415V three-phase industrial power supply. It is not designed for connection to a standard residential electrical outlet.

Before deployment, the transformer, circuit breakers, cables, connectors and power distribution system should be reviewed by a qualified electrical engineer.

Why Buy from PunkHash?

• Hong Kong and international supply channels
• Pre-shipment visual and operating inspection
• Hashrate and machine-status verification
• Serial-number verification when available
• Miner and container compatibility support
• International logistics coordination
• Bulk-order and project pricing
• Mining containers, transformers and supporting equipment
• Complete mining infrastructure consultation

Frequently Asked Questions

What is the hashrate of the S21j XP Hyd?

The rated hashrate is 495 TH/s with a manufacturer tolerance of approximately ±3%.

How much power does it consume?

Rated power consumption is 5940W, with a typical manufacturer tolerance of approximately ±5%.

Can it operate without an external cooling system?

No. The miner requires a compatible hydro-cooling circuit, including coolant circulation and heat-dissipation equipment.

Can it run on residential electricity?

No. The machine requires a 380–415V three-phase industrial power supply.

Which cryptocurrencies can it mine?

It supports the SHA-256 algorithm and can mine Bitcoin, Bitcoin Cash, Bitcoin SV and other compatible SHA-256 cryptocurrencies.

Is the hydro container included?

No. Unless specifically stated in the quotation, the miner price does not include a cooling container, cooling tower, transformer, piping or other site infrastructure.

Request a Quotation

Contact PunkHash for current availability, batch information, bulk pricing, international freight and complete hydro-mining deployment support.

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