
MicroBT · SHA-256
Whatsminer M66S
Hashrate300 – 302 TH/s
Power5,400–5,436 W
Efficiency18.00 J/TH
AvailabilitySZ Stock
Net profit / month
at $0.070/kWh$46
at $0.070/kWh$46

The Whatsminer M66S+ is an air-cooled SHA-256 ASIC miner from MicroBT, built to mine Bitcoin (BTC). It delivers 280–322 TH/s at a power draw of about 4,760–5,474 W, which works out to roughly 17 J/TH.
At 17 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 | MicroBT |
|---|---|
| Model | Whatsminer M66S+ |
| Algorithm | SHA-256 |
| Mineable coins | Bitcoin (BTC) |
| Hashrate | 280–322 TH/s |
| Power | 4,760–5,474 W (calculated) |
| Efficiency | 17 J/TH |
| Cooling | Air cooling (fans) |
| Condition | New |
| Availability | SZ Stock |
| Warranty | Per quotation |
| Minimum order | 1 unit |


