Antminer S21+ vs Canaan AvalonMiner 841
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S21+ | Specification | Canaan AvalonMiner 841 |
|---|---|---|
| 216.0 TH/s | Hashrate | 13.6 TH/s |
| 3,564 W | Power Consumption | 1,290 W |
| 16.5 J/TH | Efficiency | 94.9 J/TH |
| 75 dB | Noise Level | — |
| 15.0 kg | Weight | 4,700.0 kg |
| 12,160 BTU/hr | BTU Output | 4,402 BTU/hr |
| 30/100 | Home Mining Score | 31/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Canaan |
Profitability Comparison
Antminer S21+
Canaan AvalonMiner 841
Based on BTC price of $77,866 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Antminer S21+, which leads on 3 of 5 weighted factors (efficiency, hashrate, noise level). The standout gap is 1488% more hashrate (216.0 vs 13.6 TH/s) in the Antminer S21+'s favour. The Canaan AvalonMiner 841 claws back ground on power consumption and home mining score. Cross-check the spec deltas and ROI table above against your own electricity rate before deciding.
Spec Deltas
Here is every spec where the Antminer S21+ and Canaan AvalonMiner 841 actually differ, with the gap quantified:
- Antminer S21+ 1488% more hashrate (216.0 vs 13.6 TH/s)
- Canaan AvalonMiner 841 64% better power draw (3,564 vs 1,290 W)
- Antminer S21+ 83% better efficiency (16.5 vs 94.9 J/TH)
- Antminer S21+ 100% better weight (15.0 vs 4,700.0 kg)
- Antminer S21+ 176% more heat output (12,160 vs 4,402 BTU/hr)
- Canaan AvalonMiner 841 3% more home mining score (30.0 vs 31.0)
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.
| Antminer S21+ | Metric | Canaan AvalonMiner 841 |
|---|---|---|
| $6,500 | Upfront cost (MSRP) | — |
| -$0.81 | Daily net profit | -$2.61 |
| -$6,797 | Net after 1 year | -$952 |
| -$7,094 | Net after 2 years | -$1,904 |
| -$7,391 | Net after 3 years | -$2,857 |
| Does not pay back at current rates (negative daily profit) | Payback period | — |
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
Canaan AvalonMiner 841Score: 31/100. 0 dB noise level.
Best for Efficiency
Antminer S21+16.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Antminer S21+ vs Canaan AvalonMiner 841: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S21+ is more profitable at $-0.81/day compared to $-2.61/day for the Canaan AvalonMiner 841. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Antminer S21+ vs Canaan AvalonMiner 841: which runs at a lower noise level?
The Antminer S21+ is quieter at 75 dB compared to the Canaan AvalonMiner 841 at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Antminer S21+ vs Canaan AvalonMiner 841: which fits a residential setup better?
The Canaan AvalonMiner 841 scores 31/100 on our Home Mining Score (vs 30/100 for the Antminer S21+). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
How far apart are the Antminer S21+ and Canaan AvalonMiner 841 on J/TH?
The Antminer S21+ runs at 16.5 J/TH while the Canaan AvalonMiner 841 runs at 94.9 J/TH — a difference of 78.4 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 83% better efficiency (16.5 vs 94.9 J/TH).