MicroBT WhatsMiner M66S++ (356Th)

Bought it during the summer dip in price. Firmware update pushed on day one, worked without bricking anything. WhatsMiner's firmware isn't fancy, but it's reliable. The hosting team quoted me a rack the day I asked. Happy with the whole process.

Bought two, keeping one, hosting the other. Network stability has been perfect, zero disconnects logged. Reading 356Th/s steady on the pool. Bitcoin pool is FoundryUSA and shares are landing every few seconds as expected. Customs paperwork was already prepared, courier just needed a signature. Better experience than I've had with two other shops I won't name.

Landed in the EU without any customs drama. The noise dampening on this model is a real difference. At current hashprice the payback maths still works if you have cheap power. Ben on the sales side answered every question before I bought. Better experience than I've had with two other shops I won't name.

Bought this after reading a couple of comparisons. Temps under load sit lower than I expected. WhatsMiner's firmware isn't fancy, but it's reliable. Packaging was serious — foam, straps, wooden edges on the pallet. Would have loved a spare fan bundled in — small nit. Genuinely one of the easier hardware purchases I've made.

Set it up in the garage the same night it arrived. Coolant loop is holding pressure and the flow rate matches spec. Draws 5518 W at the wall, matches the plate. Solo hopes are zero but that isn't why you buy one of these. Recommended if you know what you're doing with power planning.

Picked one of these up last quarter. Pulling roughly the advertised wattage from the wall. WhatsMiner's firmware isn't fancy, but it's reliable. SHA-256 machines all look the same on paper, the hosting cost is what actually decides it. Shipped from the EU warehouse so no import duty surprises. Not going anywhere else for the next one.

Been running this in the basement. Was worth the extra for the newer generation efficiency. Solo hopes are zero but that isn't why you buy one of these. Sent it to the Georgia facility — power bills are a memory. Would have loved a spare fan bundled in — small nit. For once, the product and the description matched exactly.

Bought this after reading a couple of comparisons. Firmware update pushed on day one, worked without bricking anything. Solo hopes are zero but that isn't why you buy one of these. Recommended if you know what you're doing with power planning.