
Bitdeer · SHA-256
Bitdeer A3 Hydro
Hashrate550 TH/s
Power7,425 W
Efficiency13.50 J/TH
Availability4 days HK
Net profit / month
at $0.070/kWh$209
at $0.070/kWh$209

The Antminer U3S21EXP Hydro is a hydro-cooled SHA-256 ASIC miner from Bitmain, built to mine Bitcoin (BTC). It delivers 860 TH/s at a power draw of 11,180 W, which works out to roughly 13 J/TH.
At 13 J/TH it is among the most efficient Bitcoin miners currently available. Lower J/TH means more hashrate for every kilowatt-hour, which matters most over the multi-year life of a miner.
As a hydro (water-cooled) unit it needs a liquid-cooling loop rather than fans, allowing high power density and stable chip temperatures. It is a natural fit for Qubite’s hosting in the UAE.
| Manufacturer | Bitmain |
|---|---|
| Model | Antminer U3S21EXP Hydro |
| Algorithm | SHA-256 |
| Mineable coins | Bitcoin (BTC) |
| Hashrate | 860 TH/s |
| Power | 11,180 W (calculated) |
| Efficiency | 13 J/TH |
| Cooling | Hydro (water) cooling |
| Condition | New |
| Availability | 5 days HK |
| Warranty | Per quotation |
| Minimum order | 1 unit |



