Antminer S21 XP vs Canaan AvalonMiner 921
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S21 XP | Specification | Canaan AvalonMiner 921 |
|---|---|---|
| 270.0 TH/s | Taux de hachage | 20.0 TH/s |
| 3,645 W | Consommation électrique | 1,700 W |
| 13.5 J/TH | Efficiency | 85.0 J/TH |
| 75 dB | Niveau de bruit | — |
| 15.4 kg | Weight | — |
| 12,437 BTU/hr | BTU Output | 5,800 BTU/hr |
| 30/100 | Home Mining Score | 28/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | Canaan |
Profitability Comparison
Antminer S21 XP
Canaan AvalonMiner 921
Based on BTC price of $62,980 and current network difficulty as of Jun 4, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the Antminer S21 XP edges it: 4 of 5 factors go its way (efficacité, hashrate, score de minage domestique, niveau sonore). The standout gap is 1250% more hashrate (270.0 vs 20.0 TH/s) in the Antminer S21 XP's favour. That said, the Canaan AvalonMiner 921 isn't beaten everywhere — it still wins consommation électrique. Cross-check the spec deltas and operating-cost table above against your own electricity rate before deciding.
Spec Deltas
Here is every spec where the Antminer S21 XP and Canaan AvalonMiner 921 actually differ, with the gap quantified:
- Antminer S21 XP 1250% more hashrate (270.0 vs 20.0 TH/s)
- Canaan AvalonMiner 921 53% better power draw (3,645 vs 1,700 W)
- Antminer S21 XP 84% better efficacité (13.5 vs 85.0 J/TH)
- Antminer S21 XP 114% more heat output (12,437 vs 5,800 BTU/hr)
- Antminer S21 XP 7% more score de minage domestique (30.0 vs 28.0)
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 XP | Metric | Canaan AvalonMiner 921 |
|---|---|---|
| $8,200 | Upfront cost (MSRP) | — |
| -$1.06 | Daily net profit | -$3.51 |
| -$8,585 | Net after 1 year | -$1,281 |
| -$8,970 | Net after 2 years | -$2,562 |
| -$9,355 | Net after 3 years | -$3,844 |
| 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
Antminer S21 XPScore: 30/100. 75 dB noise level.
Best for Efficiency
Antminer S21 XP13.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Antminer S21 XP vs Canaan AvalonMiner 921: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S21 XP is more profitable at $-1.06/day compared to $-3.51/day for the Canaan AvalonMiner 921. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Antminer S21 XP or the Canaan AvalonMiner 921 better for noise-sensitive spaces?
The Antminer S21 XP is quieter at 75 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 Antminer S21 XP or the Canaan AvalonMiner 921?
The Antminer S21 XP scores 30/100 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.
What is the efficiency difference between Antminer S21 XP and Canaan AvalonMiner 921?
The Antminer S21 XP runs at 13.5 J/TH while the Canaan AvalonMiner 921 runs at 85.0 J/TH — a difference of 71.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 84% better efficacité (13.5 vs 85.0 J/TH).