Antminer Z15 (420KH/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
Antminer Z15 (420KH/s)
Option 2
AvalonMiner 821 (11.5TH/s)
AvalonMiner 821 (11.5TH/s) leads this comparison
AvalonMiner 821 (11.5TH/s) comes out ahead on more buyer-facing signals here. Antminer Z15 (420KH/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 | Antminer Z15 (420KH/s) | AvalonMiner 821 (11.5TH/s) | Advantage |
|---|---|---|---|
| Brand | Antminer | AvalonMiner | Contextual |
| Model | Z15 | A8 | Contextual |
| Hashrate | 420 KH/s | 11.5 TH/s Best | AvalonMiner 821 (11.5TH/s) |
| Power Consumption | 1510W | 1200W Best | AvalonMiner 821 (11.5TH/s) |
| Efficiency | 3.60 J/KH Best | 104.35 J/TH | Antminer Z15 (420KH/s) |
| Daily energy use | 36.2 kWh | 28.8 kWh Best | AvalonMiner 821 (11.5TH/s) |
| Net Daily Profit (Est.) | $13.09 Best | -$1.36 | Antminer Z15 (420KH/s) |
| Monthly Profit (Est.) | $392.57 Best | -$40.74 | Antminer Z15 (420KH/s) |
| Price | N/A | N/A | Contextual |
| Estimated ROI | N/A | N/A | Contextual |
| Cooling | AIR | AIR | Contextual |
| Dimensions | 133 x 290 x 245 mm | 150 x 370 x 136 mm | Contextual |
| Weight | 9000 g | 4700 g Best | AvalonMiner 821 (11.5TH/s) |
Performance
AvalonMiner 821 (11.5TH/s) has the hashrate edge for raw output potential.
Efficiency
Antminer Z15 (420KH/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: Antminer Z15 (420KH/s) or AvalonMiner 821 (11.5TH/s)?
AvalonMiner 821 (11.5TH/s) has a higher hashrate of 11.5 TH/s compared to Antminer Z15 (420KH/s)'s 420 KH/s.
Is Antminer Z15 (420KH/s) more efficient than AvalonMiner 821 (11.5TH/s)?
Yes, Antminer Z15 (420KH/s) is more energy efficient at 3.60 J/KH.
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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