AvalonMiner 821 (11.5TH/s) vs WhatsMiner M66S+ (318TH/s)
Compare pricing, hashrate, power draw, efficiency, ROI, and estimated hosted profitability before choosing your next mining setup.
Option 1
AvalonMiner 821 (11.5TH/s)
Option 2
WhatsMiner M66S+ (318TH/s)
WhatsMiner M66S+ (318TH/s) leads this comparison
WhatsMiner M66S+ (318TH/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 | AvalonMiner 821 (11.5TH/s) | WhatsMiner M66S+ (318TH/s) | Advantage |
|---|---|---|---|
| Brand | AvalonMiner | WhatsMiner | Contextual |
| Model | A8 | M66 | Contextual |
| Hashrate | 11.5 TH/s | 318 TH/s Best | WhatsMiner M66S+ (318TH/s) |
| Power Consumption | 1200W Best | 5406W | AvalonMiner 821 (11.5TH/s) |
| Efficiency | 104.35 J/TH | 17.00 J/TH Best | WhatsMiner M66S+ (318TH/s) |
| Daily energy use | 28.8 kWh Best | 129.7 kWh | AvalonMiner 821 (11.5TH/s) |
| Net Daily Profit (Est.) | -$1.36 | $2.40 Best | WhatsMiner M66S+ (318TH/s) |
| Monthly Profit (Est.) | -$40.74 | $71.86 Best | WhatsMiner M66S+ (318TH/s) |
| Price | N/A | $2,263.84 | Contextual |
| Estimated ROI | N/A | 31 mo | Contextual |
| Cooling | AIR | AIR | Contextual |
| Dimensions | 150 x 370 x 136 mm | 267 x 401 x 147 mm | Contextual |
| Weight | 4700 g Best | 18000 g | AvalonMiner 821 (11.5TH/s) |
Performance
WhatsMiner M66S+ (318TH/s) has the hashrate edge for raw output potential.
Efficiency
WhatsMiner M66S+ (318TH/s) is stronger when comparing joules per hash unit.
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: AvalonMiner 821 (11.5TH/s) or WhatsMiner M66S+ (318TH/s)?
WhatsMiner M66S+ (318TH/s) has a higher hashrate of 318 TH/s compared to AvalonMiner 821 (11.5TH/s)'s 11.5 TH/s.
Is AvalonMiner 821 (11.5TH/s) more efficient than WhatsMiner M66S+ (318TH/s)?
WhatsMiner M66S+ (318TH/s) is more energy efficient at 17.00 J/TH.
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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