BITMAIN Antminer S21j XP Hyd 495T Bitcoin Miner
Buy the BITMAIN Antminer S21j XP Hyd 495T Bitcoin miner with 5940W power and 12 J/TH efficiency. Hong Kong supply and global shipping.
$6,199.00
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Description：
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
| Specification | Value |
|---|---|
| Manufacturer | BITMAIN |
| Model | Antminer S21j XP Hyd |
| Hashrate | 495 TH/s ±3% |
| Power Consumption | 5940W ±5% |
| Energy Efficiency | 12 J/TH ±5% |
| Algorithm | SHA-256 |
| Mineable Coins | BTC, BCH and BSV |
| Cooling Method | Hydro Cooling |
| Input Voltage | 380–415V AC |
| Input Frequency | 50–60Hz |
| Maximum Input Current | 12A |
| Network Connection | RJ45 Ethernet 10/100M |
| Coolant Flow | 8–10L/min |
| Maximum Coolant Pressure | ≤3.5 bar |
| Miner Dimensions | Approximately 410 × 170 × 209mm |
| Packaged Dimensions | Approximately 570 × 316 × 430mm |
| Net Weight | Approximately 13.1kg |
| Gross Weight | Approximately 15.4kg |
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.
Compute the Future, Together.
About transportation：In-stock miners will be shipped within 3 business days. For bulk orders shipped via DHL Express, UPS, FedEx, or TNT, please allow an additional 1–2 days for processing.
Delivery times for pre-order miners depend on the factory’s production schedule. Estimated shipping dates are provided on the order page; however, actual shipments may be subject to delays due to production-related issues.
Our shipping process operates on a “first-pay, first-ship” basis. Once full payment has been received, we will strive to arrange shipment as quickly as possible. Payments made via bank wire transfer (T/T) may take 3–7 business days to verify, whereas payments made via cryptocurrency are typically confirmed within a few hours to 1 business day.
International shipping typically takes 5–8 business days; for remote regions, transit times may extend to 8–10 business days.
*All transactions constitute final sales and are non-refundable once completed. We appreciate your understanding that this is standard practice within the industry.
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