Antminer S9j vs Bitcoin Space Heater S19 Edition
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S9j | Specification | Bitcoin Space Heater S19 Edition |
|---|---|---|
| 14.5 TH/s | Taux de hachage | 80.0 TH/s |
| 1,350 W | Consommation électrique | 2,400 W |
| 93.1 J/TH | Efficiency | 30.0 J/TH |
| 76 dB | Niveau de bruit | 55 dB |
| 4.2 kg | Weight | 18.0 kg |
| 4,606 BTU/hr | BTU Output | 8,189 BTU/hr |
| 83/100 | Home Mining Score | 54/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | D-Central |
Profitability Comparison
Antminer S9j
Bitcoin Space Heater S19 Edition
Based on BTC price of $78,179 and current network difficulty as of May 17, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Bitcoin Space Heater S19 Edition, which leads on 3 of 5 weighted factors (efficacité, hashrate, niveau sonore). Where it pulls away hardest is 452% more hashrate (14.5 vs 80.0 TH/s). The Antminer S9j claws back ground on consommation électrique and score de minage domestique. Cross-check the spec deltas and ROI table above against your own electricity rate before deciding.
Spec Deltas
The Antminer S9j and Bitcoin Space Heater S19 Edition diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Bitcoin Space Heater S19 Edition 452% more hashrate (14.5 vs 80.0 TH/s)
- Antminer S9j 44% better power draw (1,350 vs 2,400 W)
- Bitcoin Space Heater S19 Edition 68% better efficacité (93.1 vs 30.0 J/TH)
- Bitcoin Space Heater S19 Edition 28% better noise (76.0 vs 55.0 dB)
- Antminer S9j 77% better weight (4.2 vs 18.0 kg)
- Bitcoin Space Heater S19 Edition 78% more heat output (4,606 vs 8,189 BTU/hr)
- Antminer S9j 54% more score de minage domestique (83.0 vs 54.0)
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 S9j | Metric | Bitcoin Space Heater S19 Edition |
|---|---|---|
| — | Upfront cost (MSRP) | $1,299 |
| -$2.72 | Daily net profit | -$2.88 |
| -$992 | Net after 1 year | -$2,351 |
| -$1,984 | Net after 2 years | -$3,403 |
| -$2,977 | Net after 3 years | -$4,455 |
| — | 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 S9jScore: 83/100. 76 dB noise level.
Best for Efficiency
Bitcoin Space Heater S19 Edition30.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Antminer S9j or Bitcoin Space Heater S19 Edition more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S9j is more profitable at $-2.72/day compared to $-2.88/day for the Bitcoin Space Heater S19 Edition. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Antminer S9j vs Bitcoin Space Heater S19 Edition: which runs at a lower noise level?
The Bitcoin Space Heater S19 Edition is quieter at 55 dB compared to the Antminer S9j at 76 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Antminer S9j or Bitcoin Space Heater S19 Edition?
The Antminer S9j scores 83/100 on our Home Mining Score (vs 54/100 for the Bitcoin Space Heater S19 Edition). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
How far apart are the Antminer S9j and Bitcoin Space Heater S19 Edition on J/TH?
The Antminer S9j runs at 93.1 J/TH while the Bitcoin Space Heater S19 Edition runs at 30.0 J/TH — a difference of 63.1 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 68% better efficacité (93.1 vs 30.0 J/TH).
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