Bitmain Antminer S9i (13Th) vs GMO miner B2
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S9i (13Th) | Specification | GMO miner B2 |
|---|---|---|
| 13.0 TH/s | Hashrate | 24.0 TH/s |
| 1,280 W | Power Consumption | 1,950 W |
| 98.5 J/TH | Efficiency | 81.3 J/TH |
| — | Noise Level | — |
| 4,200.0 kg | Weight | — |
| 4,367 BTU/hr | BTU Output | 6,653 BTU/hr |
| 31/100 | Home Mining Score | 28/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | GMO miner |
Profitability Comparison
Bitmain Antminer S9i (13Th)
GMO miner B2
Based on BTC price of $78,153 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the GMO miner B2, which leads on 2 of 4 weighted factors (efficiency, hashrate). The standout gap is 85% more hashrate (13.0 vs 24.0 TH/s) in the GMO miner B2's favour. That said, the Bitmain Antminer S9i (13Th) isn't beaten everywhere — it still wins 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 S9i (13Th) and GMO miner B2 diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- GMO miner B2 85% more hashrate (13.0 vs 24.0 TH/s)
- Bitmain Antminer S9i (13Th) 34% better power draw (1,280 vs 1,950 W)
- GMO miner B2 17% better efficiency (98.5 vs 81.3 J/TH)
- GMO miner B2 52% more heat output (4,367 vs 6,653 BTU/hr)
- Bitmain Antminer S9i (13Th) 11% more home mining score (31.0 vs 28.0)
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 S9i (13Th) | Metric | GMO miner B2 |
|---|---|---|
| $65 | Upfront cost (MSRP) | — |
| -$2.60 | Daily net profit | -$3.82 |
| -$1,016 | Net after 1 year | -$1,393 |
| -$1,966 | Net after 2 years | -$2,786 |
| -$2,917 | Net after 3 years | -$4,179 |
| 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
TieBoth miners produce similar daily profit.
Best for Home Mining
Bitmain Antminer S9i (13Th)Score: 31/100. 0 dB noise level.
Best for Efficiency
GMO miner B281.3 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S9i (13Th) or GMO miner B2 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S9i (13Th) is more profitable at $-2.60/day compared to $-3.82/day for the GMO miner B2. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer S9i (13Th) or GMO miner B2?
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 S9i (13Th) or the GMO miner B2?
The Bitmain Antminer S9i (13Th) scores 31/100 on our Home Mining Score (vs 28/100 for the GMO miner B2). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
How far apart are the Bitmain Antminer S9i (13Th) and GMO miner B2 on J/TH?
The Bitmain Antminer S9i (13Th) runs at 98.5 J/TH while the GMO miner B2 runs at 81.3 J/TH — a difference of 17.2 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 17% better efficiency (98.5 vs 81.3 J/TH).