Bitmain Antminer S21j XP Hyd (495Th/s)
Hydro cooling
Description
The Bitmain Antminer S21j XP Hyd provides 495 Th/s at 5940W for Bitcoin mining. Hydro cooling and a 410×170×209 mm body keep it compact and quiet at 50 dB. March 2026 release makes it a modern choice for liquid-cooled farms.
Specifications
| Manufacturer | Bitmain |
| Model | Antminer S21j XP Hyd (495Th) |
| Also known as | Antminer S21e XP Hyd (495Th) |
| Release | Mar 2026 |
| Size | 410 x 170 x 209mm |
| Noise level | 50dB |
| Cooling | Hydro-cooling |
| Power | 5940W |
| Interface | Ethernet |
| Temperature | 5 - 45 °C |
| Humidity | 5 - 95 % |
Profitability
| Daily | Monthly | Yearly | |
|---|---|---|---|
| Income | $17.83 0.000214 BTC |
$534.79 0.006420 BTC |
$6,506.59 0.078114 BTC |
| Electricity | -$7.13 | -$213.84 | -$2,601.72 |
| Profit | $10.70 | $320.95 | $3,904.87 |
Based on $0.05/kWh. Data refreshes every 24h.
ROI (Return on Investment) = miner price ÷ earnings.
Green = without electricity cost.
Red = after deducting electricity.
Frequently Asked Questions
Customer Reviews
Incredible efficiency. The J/Th ratio on this unit is unbeatable at this price point. My electricity bill actually went down after upgrading from older hardware.
Premium mining experience. From the packaging to the daily operation, everything feels well thought out. The engineers clearly know mining.
Good purchase decision. I did extensive research and this model consistently came out on top in community benchmarks. The real-world results match.
Good miner with a few quirks. The control board occasionally needs a reboot but it's rare enough not to be a dealbreaker. Performance is solid.
Great upgrade from my old S9. The efficiency improvement alone was worth the switch. Running cool and quiet compared to what I'm used to.
Stable and consistent. No crashes or unexpected reboots. The web interface could be better but the hardware itself is solid.
NOTE
- Incorrect input voltage can cause damage to the miner.
- Use two AC input wires, each with a 16-amp rating.
- Operation is recommended at altitudes below 2000 meters.
Purchasing Guidelines
- The listed retail price does not include customs duties or applicable taxes.
- Orders cannot be canceled or refunded once submitted.
- Product images are for reference purposes only; the actual shipped product will prevail.
Shipping Details
- Products will be shipped from China.
- Fully paid orders will be processed on a first-come, first-served basis.
- Customers bear responsibility for customs delays or issues.
Warranty
- 180-day warranty period starts from the shipping date.
- Valid only for the original purchaser.
- We are not responsible for damages due to non-compliance with instructions.
