Whatsminer M66
Bitcoin miner from MicroBT. Whatsminer for immersion tanks, built without fans for dielectric fluid.
Whatsminer M66 versions
The same machine, binned at the factory. Choose the rate you want; the quote names the batch actually allocated to you.
| Hashrate | Power | Efficiency | Selection |
|---|---|---|---|
| 280 TH/s | 5,572 W | 19.9 J/TH | Select 280 TH/s |
| 246 TH/s | 4,895 W* | 19.9 J/TH | Selected |
* Derived from the rated efficiency where the manufacturer publishes no separate figure for that bin.
About the Whatsminer M66
The Whatsminer M66 is the base model of MicroBT's M66 immersion series, built without fans for dielectric fluid. In this factory version it runs at 246 TH/s on about 4,895 W, which is 19.9 J/TH; the 280 TH/s version draws 5,572 W at the same efficiency. The M66S, the M66S+ and the M66S++ are more efficient, in the same dimensions.
It needs three phase power at 380 to 480 V and draws about 117.5 kWh a day per unit. Submerged, it needs no fans of its own: the site provides a dielectric fluid tank, fluid handling procedures and external heat rejection, plus power cords and a PDU, and the noise on site comes from pumps and the heat rejection. The operating range is 5 to 45 °C fluid temperature. Each unit measures 267 × 147 × 401 mm and weighs 16.0 kg, like every M66 model in our catalog, so the models share tank slots.
Specifications
Manufacturer reference values, confirmed per batch on the quote.
Scope of delivery
- The miner with integrated PSU
- Original manufacturer packaging
- Serial numbers per unit and warranty reference
- Dielectric fluid tank
- Fluid handling procedures
- External heat rejection
- Power cords and PDU
Immersion cooling. Nearly silent, stable temperatures, almost no dust and typically longer hardware life. Pulling a unit for service is messier than on a dry site.
Energy only: 4,895 W rated power, 24 hours, one unit. Cooling overhead and PSU losses not included; no revenue assumptions.
How much power does the Whatsminer M66 use?
How efficient is the Whatsminer M66?
Which coins can the Whatsminer M66 mine?
What does a site need for the Whatsminer M66?
How loud is the Whatsminer M66?
What warranty comes with the Whatsminer M66?
Can I order a single unit?
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Read before you buy the Whatsminer M66
The breakeven power price, and why we ask for yours first
Every machine has an electricity price above which it stops making money. Work that number out and most of the hardware decision answers itself.
Air, hydro or immersion: matching cooling to your site
The cooling route you pick decides which machines you can even consider, how loud your site is, and how much you spend before the first miner is switched on.
Sizing power and cooling before the hardware arrives
The machines are the short lead time. The electrical and thermal capacity they need is the long one, and it has to be finished before the first pallet lands.
Compared with related models
The closest machines by condition, algorithm, manufacturer and cooling.