Bitmain Antminer S9i (14Th) vs MicroBT WhatsMiner M70
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S9i (14Th) | Specification | MicroBT WhatsMiner M70 |
|---|---|---|
| 14.0 TH/s | Taux de hachage | 236.0 TH/s |
| 1,320 W | Consommation électrique | 3,422 W |
| 94.3 J/TH | Efficiency | 14.5 J/TH |
| — | Niveau de bruit | 75 dB |
| 4,200.0 kg | Weight | 13.5 kg |
| 4,504 BTU/hr | BTU Output | 11,676 BTU/hr |
| 31/100 | Home Mining Score | 36/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | MicroBT |
Profitability Comparison
Bitmain Antminer S9i (14Th)
MicroBT WhatsMiner M70
Based on BTC price of $76,901 and current network difficulty as of May 18, 2026. Actual results vary.
Verdict
Weighing six performance factors, the MicroBT WhatsMiner M70 comes out ahead — it takes 4 of 5 (efficacité, hashrate, score de minage domestique, niveau sonore). Where it pulls away hardest is 1586% more hashrate (14.0 vs 236.0 TH/s). That said, the Bitmain Antminer S9i (14Th) 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 Bitmain Antminer S9i (14Th) and MicroBT WhatsMiner M70 actually differ, with the gap quantified:
- MicroBT WhatsMiner M70 1586% more hashrate (14.0 vs 236.0 TH/s)
- Bitmain Antminer S9i (14Th) 61% better power draw (1,320 vs 3,422 W)
- MicroBT WhatsMiner M70 85% better efficacité (94.3 vs 14.5 J/TH)
- MicroBT WhatsMiner M70 100% better weight (4,200.0 vs 13.5 kg)
- MicroBT WhatsMiner M70 159% more heat output (4,504 vs 11,676 BTU/hr)
- MicroBT WhatsMiner M70 16% more score de minage domestique (31.0 vs 36.0)
Cost & ROI Over Time
A miner pays for itself in profit, not specs. These projections track upfront cost against one, two and three years of net earnings at $0.10/kWh.
| Bitmain Antminer S9i (14Th) | Metric | MicroBT WhatsMiner M70 |
|---|---|---|
| $65 | Upfront cost (MSRP) | — |
| -$2.67 | Daily net profit | $0.14 |
| -$1,040 | Net after 1 year | +$51 |
| -$2,016 | Net after 2 years | +$101 |
| -$2,991 | Net after 3 years | +$152 |
| 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
MicroBT WhatsMiner M70$2.81/day higher profit at current rates.
Best for Home Mining
MicroBT WhatsMiner M70Score: 36/100. 75 dB noise level.
Best for Efficiency
MicroBT WhatsMiner M7014.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S9i (14Th) or MicroBT WhatsMiner M70 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the MicroBT WhatsMiner M70 is more profitable at $0.14/day compared to $-2.67/day for the Bitmain Antminer S9i (14Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Bitmain Antminer S9i (14Th) or the MicroBT WhatsMiner M70 better for noise-sensitive spaces?
The MicroBT WhatsMiner M70 is quieter at 75 dB compared to the Bitmain Antminer S9i (14Th) at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Bitmain Antminer S9i (14Th) vs MicroBT WhatsMiner M70: which fits a residential setup better?
The MicroBT WhatsMiner M70 scores 36/100 on our Home Mining Score (vs 31/100 for the Bitmain Antminer S9i (14Th)). 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 S9i (14Th) and MicroBT WhatsMiner M70?
The Bitmain Antminer S9i (14Th) runs at 94.3 J/TH while the MicroBT WhatsMiner M70 runs at 14.5 J/TH — a difference of 79.8 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 85% better efficacité (94.3 vs 14.5 J/TH).