
MicroBT · SHA-256
Whatsminer M66S+
Hashrate280 – 322 TH/s
Power4,760–5,474 W
Efficiency17.00 J/TH
AvailabilitySZ Stock
Net profit / month
at $0.070/kWh$57
at $0.070/kWh$57

The Antminer S21 Pro+ is an air-cooled SHA-256 ASIC miner from Bitmain, built to mine Bitcoin (BTC). It delivers 245 TH/s at a power draw of 3,675 W, which works out to roughly 15 J/TH.
At 15 J/TH it is a strong efficiency level for current-generation Bitcoin mining. Lower J/TH means more hashrate for every kilowatt-hour, which matters most over the multi-year life of a miner.
It is air-cooled with built-in fans and runs in standard mining racks, best placed in a dedicated, well-ventilated facility rather than at home.
| Manufacturer | Bitmain |
|---|---|
| Model | Antminer S21 Pro+ |
| Algorithm | SHA-256 |
| Mineable coins | Bitcoin (BTC) |
| Hashrate | 245 TH/s |
| Power | 3,675 W (calculated) |
| Efficiency | 15 J/TH |
| Cooling | Air cooling (fans) |
| Condition | New |
| Availability | HK Stock |
| Warranty | Per quotation |
| Minimum order | 1 unit |


