Bitmain Antminer S9j (14.5Th) vs MicroBT WhatsMiner M70S+
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S9j (14.5Th) | Specification | MicroBT WhatsMiner M70S+ |
|---|---|---|
| 14.5 TH/s | Taux de hachage | 262.0 TH/s |
| 1,350 W | Consommation électrique | 3,275 W |
| 93.1 J/TH | Efficiency | 12.5 J/TH |
| — | Niveau de bruit | 75 dB |
| 4,200.0 kg | Weight | 13.5 kg |
| 4,606 BTU/hr | BTU Output | 11,174 BTU/hr |
| 31/100 | Home Mining Score | 36/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | MicroBT |
Profitability Comparison
Bitmain Antminer S9j (14.5Th)
MicroBT WhatsMiner M70S+
Based on BTC price of $78,071 and current network difficulty as of May 17, 2026. Actual results vary.
Verdict
Weighing six performance factors, the MicroBT WhatsMiner M70S+ comes out ahead — it takes 4 of 5 (efficacité, hashrate, score de minage domestique, niveau sonore). Its biggest concrete edge: 1707% more hashrate (14.5 vs 262.0 TH/s). That said, the Bitmain Antminer S9j (14.5Th) isn't beaten everywhere — it still wins consommation électrique. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Spec Deltas
The Bitmain Antminer S9j (14.5Th) and MicroBT WhatsMiner M70S+ diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- MicroBT WhatsMiner M70S+ 1707% more hashrate (14.5 vs 262.0 TH/s)
- Bitmain Antminer S9j (14.5Th) 59% better power draw (1,350 vs 3,275 W)
- MicroBT WhatsMiner M70S+ 87% better efficacité (93.1 vs 12.5 J/TH)
- MicroBT WhatsMiner M70S+ 100% better weight (4,200.0 vs 13.5 kg)
- MicroBT WhatsMiner M70S+ 143% more heat output (4,606 vs 11,174 BTU/hr)
- MicroBT WhatsMiner M70S+ 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 S9j (14.5Th) | Metric | MicroBT WhatsMiner M70S+ |
|---|---|---|
| $65 | Upfront cost (MSRP) | — |
| -$2.72 | Daily net profit | $1.55 |
| -$1,057 | Net after 1 year | +$567 |
| -$2,050 | Net after 2 years | +$1,134 |
| -$3,042 | Net after 3 years | +$1,700 |
| 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 M70S+$4.27/day higher profit at current rates.
Best for Home Mining
MicroBT WhatsMiner M70S+Score: 36/100. 75 dB noise level.
Best for Efficiency
MicroBT WhatsMiner M70S+12.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S9j (14.5Th) or MicroBT WhatsMiner M70S+ more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the MicroBT WhatsMiner M70S+ is more profitable at $1.55/day compared to $-2.72/day for the Bitmain Antminer S9j (14.5Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer S9j (14.5Th) or MicroBT WhatsMiner M70S+?
The MicroBT WhatsMiner M70S+ is quieter at 75 dB compared to the Bitmain Antminer S9j (14.5Th) at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Bitmain Antminer S9j (14.5Th) or MicroBT WhatsMiner M70S+?
The MicroBT WhatsMiner M70S+ scores 36/100 on our Home Mining Score (vs 31/100 for the Bitmain Antminer S9j (14.5Th)). 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 S9j (14.5Th) and MicroBT WhatsMiner M70S+?
The Bitmain Antminer S9j (14.5Th) runs at 93.1 J/TH while the MicroBT WhatsMiner M70S+ runs at 12.5 J/TH — a difference of 80.6 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 87% better efficacité (93.1 vs 12.5 J/TH).
Compare Bitmain Antminer S9j (14.5Th) with...
Compare MicroBT WhatsMiner M70S+ with...
- MicroBT WhatsMiner M70S+ vs MicroBT Whatsminer D1
- MicroBT WhatsMiner M70S+ vs MicroBT Whatsminer M10
- MicroBT WhatsMiner M70S+ vs MicroBT Whatsminer M10S
- MicroBT WhatsMiner M70S+ vs MicroBT Whatsminer M20S
- MicroBT WhatsMiner M70S+ vs MicroBT Whatsminer M21
- MicroBT WhatsMiner M70S+ vs MicroBT Whatsminer M21S