AvalonMiner 821 (11.5TH/s) vs Gamma Duo 650 (1.63TH/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
Gamma Duo 650 (1.63TH/s)
Gamma Duo 650 (1.63TH/s) leads this comparison
Gamma Duo 650 (1.63TH/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) | Gamma Duo 650 (1.63TH/s) | Advantage |
|---|---|---|---|
| Brand | AvalonMiner | Bitaxe | Contextual |
| Model | A8 | Gamma | Contextual |
| Hashrate | 11.5 TH/s Best | 1.63 TH/s | AvalonMiner 821 (11.5TH/s) |
| Power Consumption | 1200W | 26W Best | Gamma Duo 650 (1.63TH/s) |
| Efficiency | 104.35 J/TH | 15.95 J/TH Best | Gamma Duo 650 (1.63TH/s) |
| Daily energy use | 28.8 kWh | 0.6 kWh Best | Gamma Duo 650 (1.63TH/s) |
| Net Daily Profit (Est.) | -$1.36 | $0.01 Best | Gamma Duo 650 (1.63TH/s) |
| Monthly Profit (Est.) | -$40.74 | $0.38 Best | Gamma Duo 650 (1.63TH/s) |
| Price | N/A | N/A | Contextual |
| Estimated ROI | N/A | N/A | Contextual |
| Cooling | AIR | AIR | Contextual |
| Dimensions | 150 x 370 x 136 mm | 10 x 5 x 12 mm | Contextual |
| Weight | 4700 g | 340 g Best | Gamma Duo 650 (1.63TH/s) |
Performance
AvalonMiner 821 (11.5TH/s) has the hashrate edge for raw output potential.
Efficiency
Gamma Duo 650 (1.63TH/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 Gamma Duo 650 (1.63TH/s)?
AvalonMiner 821 (11.5TH/s) has a higher hashrate of 11.5 TH/s compared to Gamma Duo 650 (1.63TH/s)'s 1.63 TH/s.
Is AvalonMiner 821 (11.5TH/s) more efficient than Gamma Duo 650 (1.63TH/s)?
Gamma Duo 650 (1.63TH/s) is more energy efficient at 15.95 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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