Antminer S9i vs Whatsminer M56S
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S9i | Specification | Whatsminer M56S |
|---|---|---|
| 14.0 TH/s | Hashrate | 212.0 TH/s |
| 1,320 W | Power Consumption | 5,550 W |
| 94.3 J/TH | Efficiency | 26.2 J/TH |
| 76 dB | Noise Level | 50 dB |
| 4.2 kg | Weight | 13.0 kg |
| 4,504 BTU/hr | BTU Output | 18,937 BTU/hr |
| 83/100 | Home Mining Score | 44/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | MicroBT |
Profitability Comparison
Antminer S9i
Whatsminer M56S
Based on BTC price of $78,165 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the Whatsminer M56S edges it: 3 of 5 factors go its way (efficiency, hashrate, noise level). Where it pulls away hardest is 1414% more hashrate (14.0 vs 212.0 TH/s). The Antminer S9i holds the edge in power consumption and home mining score. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
The Antminer S9i and Whatsminer M56S diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Whatsminer M56S 1414% more hashrate (14.0 vs 212.0 TH/s)
- Antminer S9i 76% better power draw (1,320 vs 5,550 W)
- Whatsminer M56S 72% better efficiency (94.3 vs 26.2 J/TH)
- Whatsminer M56S 34% better noise (76.0 vs 50.0 dB)
- Antminer S9i 68% better weight (4.2 vs 13.0 kg)
- Whatsminer M56S 320% more heat output (4,504 vs 18,937 BTU/hr)
- Antminer S9i 89% more home mining score (83.0 vs 44.0)
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 S9i | Metric | Whatsminer M56S |
|---|---|---|
| — | Upfront cost (MSRP) | $5,500 |
| -$2.66 | Daily net profit | -$5.69 |
| -$973 | Net after 1 year | -$7,578 |
| -$1,945 | Net after 2 years | -$9,657 |
| -$2,918 | Net after 3 years | -$11,735 |
| — | 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
Antminer S9iScore: 83/100. 76 dB noise level.
Best for Efficiency
Whatsminer M56S26.2 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Antminer S9i or Whatsminer M56S more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S9i is more profitable at $-2.66/day compared to $-5.69/day for the Whatsminer M56S. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Antminer S9i or the Whatsminer M56S better for noise-sensitive spaces?
The Whatsminer M56S is quieter at 50 dB compared to the Antminer S9i at 76 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Antminer S9i or Whatsminer M56S?
The Antminer S9i scores 83/100 on our Home Mining Score (vs 44/100 for the Whatsminer M56S). 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 S9i and Whatsminer M56S?
The Antminer S9i runs at 94.3 J/TH while the Whatsminer M56S runs at 26.2 J/TH — a difference of 68.1 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 72% better efficiency (94.3 vs 26.2 J/TH).