Bitmain Antminer S21 Hyd (335Th) vs Canaan Avalon Q
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S21 Hyd (335Th) | Specification | Canaan Avalon Q |
|---|---|---|
| 335.0 TH/s | Hashrate | 90.0 TH/s |
| 5,360 W | Power Consumption | 1,674 W |
| 16.0 J/TH | Efficiency | 18.6 J/TH |
| — | Noise Level | 45 dB |
| 14.2 kg | Weight | 10.5 kg |
| 18,288 BTU/hr | BTU Output | 5,712 BTU/hr |
| 16/100 | Home Mining Score | 56/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Canaan |
Profitability Comparison
Bitmain Antminer S21 Hyd (335Th)
Canaan Avalon Q
Based on BTC price of $79,032 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the Bitmain Antminer S21 Hyd (335Th) edges it: 3 of 6 factors go its way (efficiency, hashrate, price-performance). The standout gap is 272% more hashrate (335.0 vs 90.0 TH/s) in the Bitmain Antminer S21 Hyd (335Th)'s favour. That said, the Canaan Avalon Q isn't beaten everywhere — it still wins power consumption and home mining score and noise level. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
Stripped to the numbers, this is how far apart the Bitmain Antminer S21 Hyd (335Th) and Canaan Avalon Q sit on each measurable spec:
- Bitmain Antminer S21 Hyd (335Th) 272% more hashrate (335.0 vs 90.0 TH/s)
- Canaan Avalon Q 69% better power draw (5,360 vs 1,674 W)
- Bitmain Antminer S21 Hyd (335Th) 14% better efficiency (16.0 vs 18.6 J/TH)
- Canaan Avalon Q 26% better weight (14.2 vs 10.5 kg)
- Bitmain Antminer S21 Hyd (335Th) 220% more heat output (18,288 vs 5,712 BTU/hr)
- Canaan Avalon Q 250% more home mining score (16.0 vs 56.0)
Cost & ROI Over Time
Hardware cost is only half the story — here is how each miner's upfront price plays out against cumulative profit at a $0.10/kWh rate.
| Bitmain Antminer S21 Hyd (335Th) | Metric | Canaan Avalon Q |
|---|---|---|
| $3,999 | Upfront cost (MSRP) | $1,292 |
| -$0.68 | Daily net profit | -$0.74 |
| -$4,247 | Net after 1 year | -$1,563 |
| -$4,496 | Net after 2 years | -$1,835 |
| -$4,744 | Net after 3 years | -$2,107 |
| Does not pay back at current rates (negative daily profit) | 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
Canaan Avalon QScore: 56/100. 45 dB noise level.
Best for Efficiency
Bitmain Antminer S21 Hyd (335Th)16.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Bitmain Antminer S21 Hyd (335Th) vs Canaan Avalon Q: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S21 Hyd (335Th) is more profitable at $-0.68/day compared to $-0.74/day for the Canaan Avalon Q. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Bitmain Antminer S21 Hyd (335Th) or the Canaan Avalon Q better for noise-sensitive spaces?
The Canaan Avalon Q is quieter at 45 dB compared to the Bitmain Antminer S21 Hyd (335Th) at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Bitmain Antminer S21 Hyd (335Th) or Canaan Avalon Q?
The Canaan Avalon Q scores 56/100 on our Home Mining Score (vs 16/100 for the Bitmain Antminer S21 Hyd (335Th)). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Bitmain Antminer S21 Hyd (335Th) vs Canaan Avalon Q: how much does the efficiency gap matter?
The Bitmain Antminer S21 Hyd (335Th) runs at 16.0 J/TH while the Canaan Avalon Q runs at 18.6 J/TH — a difference of 2.6 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 14% better efficiency (16.0 vs 18.6 J/TH).