Whatsminer M66S++
Bitcoin miner from MicroBT. The top machine of the M66 immersion range and the most hashrate per tank slot. For sites that already run dielectric fluid and want to densify.
Whatsminer M66S++ 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 |
|---|---|---|---|
| 356 TH/s | 5,518 W | 15.5 J/TH | Selected |
| 348 TH/s | 5,394 W | 15.5 J/TH | Select 348 TH/s |
About the Whatsminer M66S++
The Whatsminer M66S++ is the top model of MicroBT's M66 immersion series, with the most hashrate and the best efficiency of the series. In this factory version it runs at 356 TH/s on 5,518 W, which is 15.5 J/TH; the 348 TH/s version keeps that efficiency at 5,394 W. It has the dimensions of the other M66 models, so it fits the same tank slots.
It needs three phase power at 380 to 480 V and draws about 132.4 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.
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: 5,518 W rated power, 24 hours, one unit. Cooling overhead and PSU losses not included; no revenue assumptions.
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Which coins can the Whatsminer M66S++ mine?
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What warranty comes with the Whatsminer M66S++?
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Read before you buy the Whatsminer M66S++
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.