Bitmain Antminer R4 vs Bitcoin Space Heater S9 Edition
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer R4 | Specification | Bitcoin Space Heater S9 Edition |
|---|---|---|
| 8.7 TH/s | Hashrate | 12.0 TH/s |
| 845 W | Power Consumption | 1,100 W |
| 97.1 J/TH | Efficiency | 91.7 J/TH |
| — | Noise Level | 50 dB |
| 2,500.0 kg | Weight | 8.0 kg |
| 2,883 BTU/hr | BTU Output | 3,753 BTU/hr |
| 28/100 | Home Mining Score | 59/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | D-Central |
Profitability Comparison
Bitmain Antminer R4
Bitcoin Space Heater S9 Edition
Based on BTC price of $79,069 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Bitcoin Space Heater S9 Edition, which leads on 4 of 5 weighted factors (efficiency, hashrate, home mining score, noise level). The standout gap is 38% more hashrate (8.7 vs 12.0 TH/s) in the Bitcoin Space Heater S9 Edition's favour. The Bitmain Antminer R4 claws back ground on power consumption. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
Stripped to the numbers, this is how far apart the Bitmain Antminer R4 and Bitcoin Space Heater S9 Edition sit on each measurable spec:
- Bitcoin Space Heater S9 Edition 38% more hashrate (8.7 vs 12.0 TH/s)
- Bitmain Antminer R4 23% better power draw (845 vs 1,100 W)
- Bitcoin Space Heater S9 Edition 6% better efficiency (97.1 vs 91.7 J/TH)
- Bitcoin Space Heater S9 Edition 100% better weight (2,500.0 vs 8.0 kg)
- Bitcoin Space Heater S9 Edition 30% more heat output (2,883 vs 3,753 BTU/hr)
- Bitcoin Space Heater S9 Edition 111% more home mining score (28.0 vs 59.0)
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 R4 | Metric | Bitcoin Space Heater S9 Edition |
|---|---|---|
| — | Upfront cost (MSRP) | $499 |
| -$1.71 | Daily net profit | -$2.20 |
| -$625 | Net after 1 year | -$1,303 |
| -$1,249 | Net after 2 years | -$2,107 |
| -$1,874 | Net after 3 years | -$2,912 |
| — | 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
Bitcoin Space Heater S9 EditionScore: 59/100. 50 dB noise level.
Best for Efficiency
Bitcoin Space Heater S9 Edition91.7 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer R4 or Bitcoin Space Heater S9 Edition more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer R4 is more profitable at $-1.71/day compared to $-2.20/day for the Bitcoin Space Heater S9 Edition. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer R4 or Bitcoin Space Heater S9 Edition?
The Bitcoin Space Heater S9 Edition is quieter at 50 dB compared to the Bitmain Antminer R4 at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Bitmain Antminer R4 vs Bitcoin Space Heater S9 Edition: which fits a residential setup better?
The Bitcoin Space Heater S9 Edition scores 59/100 on our Home Mining Score (vs 28/100 for the Bitmain Antminer R4). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Bitmain Antminer R4 vs Bitcoin Space Heater S9 Edition: how much does the efficiency gap matter?
The Bitmain Antminer R4 runs at 97.1 J/TH while the Bitcoin Space Heater S9 Edition runs at 91.7 J/TH — a difference of 5.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 6% better efficiency (97.1 vs 91.7 J/TH).
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