Canaan AvalonMiner 921 vs Bitcoin Space Heater S9 Edition
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Canaan AvalonMiner 921 | Specification | Bitcoin Space Heater S9 Edition |
|---|---|---|
| 20.0 TH/s | Taux de hachage | 12.0 TH/s |
| 1,700 W | Consommation électrique | 1,100 W |
| 85.0 J/TH | Efficiency | 91.7 J/TH |
| — | Niveau de bruit | 50 dB |
| — | Weight | 8.0 kg |
| 5,800 BTU/hr | BTU Output | 3,753 BTU/hr |
| 28/100 | Home Mining Score | 59/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Canaan | Manufacturer | D-Central |
Profitability Comparison
Canaan AvalonMiner 921
Bitcoin Space Heater S9 Edition
Based on BTC price of $78,179 and current network difficulty as of May 17, 2026. Actual results vary.
Verdict
Selon notre analyse multifactorielle, le Canaan AvalonMiner 921 l'emporte sur 2 des 5 facteurs (efficacité, hashrate). The standout gap is 67% more hashrate (20.0 vs 12.0 TH/s) in the Canaan AvalonMiner 921's favour. The Bitcoin Space Heater S9 Edition claws back ground on consommation électrique and score de minage domestique and niveau sonore. Cross-check the spec deltas and ROI table above against your own electricity rate before deciding.
Spec Deltas
Stripped to the numbers, this is how far apart the Canaan AvalonMiner 921 and Bitcoin Space Heater S9 Edition sit on each measurable spec:
- Canaan AvalonMiner 921 67% more hashrate (20.0 vs 12.0 TH/s)
- Bitcoin Space Heater S9 Edition 35% better power draw (1,700 vs 1,100 W)
- Canaan AvalonMiner 921 7% better efficacité (85.0 vs 91.7 J/TH)
- Canaan AvalonMiner 921 55% more heat output (5,800 vs 3,753 BTU/hr)
- Bitcoin Space Heater S9 Edition 111% more score de minage domestique (28.0 vs 59.0)
Cost & ROI Over Time
Sticker price versus what the miner actually earns back: the table below projects cumulative net profit at a $0.10/kWh electricity rate.
| Canaan AvalonMiner 921 | Metric | Bitcoin Space Heater S9 Edition |
|---|---|---|
| — | Upfront cost (MSRP) | $499 |
| -$3.36 | Daily net profit | -$2.21 |
| -$1,227 | Net after 1 year | -$1,305 |
| -$2,453 | Net after 2 years | -$2,111 |
| -$3,680 | Net after 3 years | -$2,917 |
| — | Payback period | Does not pay back at current rates (negative daily profit) |
Projections assume continuous operation, a flat $0.10/kWh rate, and no hardware degradation, pool fees, or BTC price change. Real-world ROI varies.
Best For...
Best for Profitability
TieBoth miners produce similar daily profit.
Best for Home Mining
Bitcoin Space Heater S9 EditionScore: 59/100. 50 dB noise level.
Best for Efficiency
Canaan AvalonMiner 92185.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Canaan AvalonMiner 921 vs Bitcoin Space Heater S9 Edition: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Bitcoin Space Heater S9 Edition is more profitable at $-2.21/day compared to $-3.36/day for the Canaan AvalonMiner 921. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Canaan AvalonMiner 921 or Bitcoin Space Heater S9 Edition?
The Bitcoin Space Heater S9 Edition is quieter at 50 dB compared to the Canaan AvalonMiner 921 at 0 dB. For home mining, lower noise levels make a significant difference in livability.
For mining at home, should I pick the Canaan AvalonMiner 921 or the Bitcoin Space Heater S9 Edition?
The Bitcoin Space Heater S9 Edition scores 59/100 on our Home Mining Score (vs 28/100 for the Canaan AvalonMiner 921). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Canaan AvalonMiner 921 vs Bitcoin Space Heater S9 Edition: how much does the efficiency gap matter?
The Canaan AvalonMiner 921 runs at 85.0 J/TH while the Bitcoin Space Heater S9 Edition runs at 91.7 J/TH — a difference of 6.7 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 7% better efficacité (85.0 vs 91.7 J/TH).
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