WhatsMiner M66S++ (356MH/s) vs AvalonMiner 821 (11.5TH/s)
Compare pricing, hashrate, power draw, efficiency, ROI, and estimated hosted profitability before choosing your next mining setup.
Option 1
WhatsMiner M66S++ (356MH/s)
Option 2
AvalonMiner 821 (11.5TH/s)
WhatsMiner M66S++ (356MH/s) leads this comparison
WhatsMiner M66S++ (356MH/s) comes out ahead on more buyer-facing signals here. AvalonMiner 821 (11.5TH/s) can still be the better fit when budget, availability, or a specific mining setup matters more.
Profit estimates use currently available product data and a hosted electricity rate of $0.060/kWh.
Technical comparison
Side-by-side mining, operating, and commercial specs.
| Feature | WhatsMiner M66S++ (356MH/s) | AvalonMiner 821 (11.5TH/s) | Advantage |
|---|---|---|---|
| Brand | N/A | AvalonMiner | Contextual |
| Model | N/A | A8 | Contextual |
| Hashrate | 356 MH/s | 11.5 TH/s Best | AvalonMiner 821 (11.5TH/s) |
| Power Consumption | 0W Best | 1200W | WhatsMiner M66S++ (356MH/s) |
| Efficiency | N/A | 104.35 J/TH | Contextual |
| Daily energy use | 0.0 kWh Best | 28.8 kWh | WhatsMiner M66S++ (356MH/s) |
| Net Daily Profit (Est.) | $13.11 Best | -$1.36 | WhatsMiner M66S++ (356MH/s) |
| Monthly Profit (Est.) | $393.38 Best | -$40.74 | WhatsMiner M66S++ (356MH/s) |
| Price | N/A | N/A | Contextual |
| Estimated ROI | N/A | N/A | Contextual |
| Cooling | AIR | AIR | Contextual |
| Dimensions | 267 x 401 x 147 mm | 150 x 370 x 136 mm | Contextual |
| Weight | 18000 g | 4700 g Best | AvalonMiner 821 (11.5TH/s) |
Performance
AvalonMiner 821 (11.5TH/s) has the hashrate edge for raw output potential.
Efficiency
Efficiency data is not available for this comparison.
Buying decision
Check live stock, delivery schedule, and hosting capacity on the product page before placing an order.
Frequently asked questions
Which is more powerful: WhatsMiner M66S++ (356MH/s) or AvalonMiner 821 (11.5TH/s)?
AvalonMiner 821 (11.5TH/s) has a higher hashrate of 11.5 TH/s compared to WhatsMiner M66S++ (356MH/s)'s 356 MH/s.
Is WhatsMiner M66S++ (356MH/s) more efficient than AvalonMiner 821 (11.5TH/s)?
Efficiency data is not available for this comparison.
Which miner has the better estimated ROI?
Estimated ROI is not available because one of the miners is missing current pricing or profit data.
Every Day You Wait is Revenue You Lose
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