Bitmain Antminer S5 vs MicroBT Whatsminer M31S
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S5 | Specification | MicroBT Whatsminer M31S |
|---|---|---|
| 1.2 TH/s | Hashrate | 76.0 TH/s |
| 590 W | Power Consumption | 3,220 W |
| 510.8 J/TH | Efficiency | 42.4 J/TH |
| — | Noise Level | — |
| — | Weight | 12,500.0 kg |
| 2,013 BTU/hr | BTU Output | 10,987 BTU/hr |
| 30/100 | Home Mining Score | 22/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | MicroBT |
Profitability Comparison
Bitmain Antminer S5
MicroBT Whatsminer M31S
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 MicroBT Whatsminer M31S edges it: 2 of 4 factors go its way (efficiency, hashrate). Its biggest concrete edge: 6480% more hashrate (1.2 vs 76.0 TH/s). The Bitmain Antminer S5 claws back ground on 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 Bitmain Antminer S5 and MicroBT Whatsminer M31S diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- MicroBT Whatsminer M31S 6480% more hashrate (1.2 vs 76.0 TH/s)
- Bitmain Antminer S5 82% better power draw (590 vs 3,220 W)
- MicroBT Whatsminer M31S 92% better efficiency (510.8 vs 42.4 J/TH)
- MicroBT Whatsminer M31S 446% more heat output (2,013 vs 10,987 BTU/hr)
- Bitmain Antminer S5 36% more home mining score (30.0 vs 22.0)
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.
| Bitmain Antminer S5 | Metric | MicroBT Whatsminer M31S |
|---|---|---|
| — | Upfront cost (MSRP) | $91 |
| -$1.37 | Daily net profit | -$4.96 |
| -$502 | Net after 1 year | -$1,903 |
| -$1,003 | Net after 2 years | -$3,715 |
| -$1,505 | Net after 3 years | -$5,527 |
| — | 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
Bitmain Antminer S5Score: 30/100. 0 dB noise level.
Best for Efficiency
MicroBT Whatsminer M31S42.4 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S5 or MicroBT Whatsminer M31S more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S5 is more profitable at $-1.37/day compared to $-4.96/day for the MicroBT Whatsminer M31S. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Bitmain Antminer S5 vs MicroBT Whatsminer M31S: which runs at a lower noise level?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
For mining at home, should I pick the Bitmain Antminer S5 or the MicroBT Whatsminer M31S?
The Bitmain Antminer S5 scores 30/100 on our Home Mining Score (vs 22/100 for the MicroBT Whatsminer M31S). 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 Bitmain Antminer S5 and MicroBT Whatsminer M31S?
The Bitmain Antminer S5 runs at 510.8 J/TH while the MicroBT Whatsminer M31S runs at 42.4 J/TH — a difference of 468.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 92% better efficiency (510.8 vs 42.4 J/TH).
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