Antminer K7 vs Bitmain Antminer R4
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer K7 | Specification | Bitmain Antminer R4 |
|---|---|---|
| 63.5 TH/s | Hashrate | 8.7 TH/s |
| 3,080 W | Power Consumption | 845 W |
| 48.5 J/TH | Efficiency | 97.1 J/TH |
| 75 dB | Noise Level | — |
| 14.0 kg | Weight | 2,500.0 kg |
| 10,509 BTU/hr | BTU Output | 2,883 BTU/hr |
| 36/100 | Home Mining Score | 28/100 |
| — | Release Year | — |
| Eaglesong | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer K7
Bitmain Antminer R4
Based on BTC price of $79,027 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the Antminer K7 edges it: 4 of 5 factors go its way (efficiency, hashrate, home mining score, noise level). Where it pulls away hardest is 630% more hashrate (63.5 vs 8.7 TH/s). That said, the Bitmain Antminer R4 isn't beaten everywhere — it still wins power consumption. Cross-check the spec deltas and ROI table above against your own electricity rate before deciding.
Spec Deltas
Stripped to the numbers, this is how far apart the Antminer K7 and Bitmain Antminer R4 sit on each measurable spec:
- Antminer K7 630% more hashrate (63.5 vs 8.7 TH/s)
- Bitmain Antminer R4 73% better power draw (3,080 vs 845 W)
- Antminer K7 50% better efficiency (48.5 vs 97.1 J/TH)
- Antminer K7 99% better weight (14.0 vs 2,500.0 kg)
- Antminer K7 265% more heat output (10,509 vs 2,883 BTU/hr)
- Antminer K7 29% more home mining score (36.0 vs 28.0)
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.
| Antminer K7 | Metric | Bitmain Antminer R4 |
|---|---|---|
| $3,500 | Upfront cost (MSRP) | — |
| -$5.08 | Daily net profit | -$1.71 |
| -$5,355 | Net after 1 year | -$625 |
| -$7,210 | Net after 2 years | -$1,249 |
| -$9,066 | Net after 3 years | -$1,874 |
| 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
Antminer K7Score: 36/100. 75 dB noise level.
Best for Efficiency
Antminer K748.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Antminer K7 or Bitmain Antminer R4 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 $-5.08/day for the Antminer K7. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Antminer K7 or Bitmain Antminer R4?
The Antminer K7 is quieter at 75 dB compared to the Bitmain Antminer R4 at 0 dB. For home mining, lower noise levels make a significant difference in livability.
For mining at home, should I pick the Antminer K7 or the Bitmain Antminer R4?
The Antminer K7 scores 36/100 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.
Antminer K7 vs Bitmain Antminer R4: how much does the efficiency gap matter?
The Antminer K7 runs at 48.5 J/TH while the Bitmain Antminer R4 runs at 97.1 J/TH — a difference of 48.6 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 50% better efficiency (48.5 vs 97.1 J/TH).