SealMiner A2 Hydro (446MH/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
SealMiner A2 Hydro (446MH/s)
Option 2
AvalonMiner 821 (11.5TH/s)
SealMiner A2 Hydro (446MH/s) leads this comparison
SealMiner A2 Hydro (446MH/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 | SealMiner A2 Hydro (446MH/s) | AvalonMiner 821 (11.5TH/s) | Advantage |
|---|---|---|---|
| Brand | N/A | AvalonMiner | Contextual |
| Model | N/A | A8 | Contextual |
| Hashrate | 446 MH/s | 11.5 TH/s Best | AvalonMiner 821 (11.5TH/s) |
| Power Consumption | 0W Best | 1200W | SealMiner A2 Hydro (446MH/s) |
| Efficiency | N/A | 104.35 J/TH | Contextual |
| Daily energy use | 0.0 kWh Best | 28.8 kWh | SealMiner A2 Hydro (446MH/s) |
| Net Daily Profit (Est.) | $0.00 Best | -$1.36 | SealMiner A2 Hydro (446MH/s) |
| Monthly Profit (Est.) | $0.00 Best | -$40.74 | SealMiner A2 Hydro (446MH/s) |
| Price | N/A | N/A | Contextual |
| Estimated ROI | N/A | N/A | Contextual |
| Cooling | HYDRO | AIR | Contextual |
| Dimensions | N/A | 150 x 370 x 136 mm | Contextual |
| Weight | N/A | 4700 g | Contextual |
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: SealMiner A2 Hydro (446MH/s) or AvalonMiner 821 (11.5TH/s)?
AvalonMiner 821 (11.5TH/s) has a higher hashrate of 11.5 TH/s compared to SealMiner A2 Hydro (446MH/s)'s 446 MH/s.
Is SealMiner A2 Hydro (446MH/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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