Canaan AvalonMiner 821 vs StealthMiner
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Canaan AvalonMiner 821 | Specification | StealthMiner |
|---|---|---|
| 11.5 TH/s | Hashrate | 800.0 GH/s |
| 1,200 W | Power Consumption | 18 W |
| 104.4 J/TH | Efficiency | 22.5 J/TH |
| — | Noise Level | 28 dB |
| 4,700.0 kg | Weight | 1.5 kg |
| 4,094 BTU/hr | BTU Output | 61 BTU/hr |
| 31/100 | Home Mining Score | 70/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Canaan | Manufacturer | D-Central |
Profitability Comparison
Canaan AvalonMiner 821
StealthMiner
Based on BTC price of $73,663 and current network difficulty as of Mar 17, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the StealthMiner wins on 4 of 6 factors (efficiency, power consumption, home mining score, noise level). The Canaan AvalonMiner 821 holds the edge in hashrate and price-performance. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Best For...
Best for Profitability
TieBoth miners produce similar daily profit.
Best for Home Mining
StealthMinerScore: 70/100. 28 dB noise level.
Best for Efficiency
StealthMiner22.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Canaan AvalonMiner 821 or StealthMiner more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the StealthMiner is more profitable at $-0.02/day compared to $-2.51/day for the Canaan AvalonMiner 821. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Canaan AvalonMiner 821 or StealthMiner?
The StealthMiner is quieter at 28 dB compared to the Canaan AvalonMiner 821 at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Canaan AvalonMiner 821 or StealthMiner?
The StealthMiner scores 70/100 on our Home Mining Score (vs 31/100 for the Canaan AvalonMiner 821). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
What is the efficiency difference between Canaan AvalonMiner 821 and StealthMiner?
The Canaan AvalonMiner 821 runs at 104.4 J/TH while the StealthMiner runs at 22.5 J/TH — a difference of 81.9 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.