Antminer K7 vs Bitmain Antminer V9 (4Th)
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer K7 | Specification | Bitmain Antminer V9 (4Th) |
|---|---|---|
| 63.5 TH/s | Hashrate | 4.0 TH/s |
| 3,080 W | Power Consumption | 1,027 W |
| 48.5 J/TH | Efficiency | 256.8 J/TH |
| 75 dB | Noise Level | — |
| 14.0 kg | Weight | 3,050.0 kg |
| 10,509 BTU/hr | BTU Output | 3,504 BTU/hr |
| 36/100 | Home Mining Score | 31/100 |
| — | Release Year | — |
| Eaglesong | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer K7
Bitmain Antminer V9 (4Th)
Based on BTC price of $79,240 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Antminer K7 wins on 4 of 5 factors (efficiency, hashrate, home mining score, noise level). The standout gap is 1488% more hashrate (63.5 vs 4.0 TH/s) in the Antminer K7's favour. That said, the Bitmain Antminer V9 (4Th) isn't beaten everywhere — it still wins power consumption. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Spec Deltas
Here is every spec where the Antminer K7 and Bitmain Antminer V9 (4Th) actually differ, with the gap quantified:
- Antminer K7 1488% more hashrate (63.5 vs 4.0 TH/s)
- Bitmain Antminer V9 (4Th) 67% better power draw (3,080 vs 1,027 W)
- Antminer K7 81% better efficiency (48.5 vs 256.8 J/TH)
- Antminer K7 100% better weight (14.0 vs 3,050.0 kg)
- Antminer K7 200% more heat output (10,509 vs 3,504 BTU/hr)
- Antminer K7 16% more home mining score (36.0 vs 31.0)
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 K7 | Metric | Bitmain Antminer V9 (4Th) |
|---|---|---|
| $3,500 | Upfront cost (MSRP) | — |
| -$5.00 | Daily net profit | -$2.31 |
| -$5,327 | Net after 1 year | -$845 |
| -$7,153 | Net after 2 years | -$1,690 |
| -$8,980 | Net after 3 years | -$2,534 |
| 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 V9 (4Th) more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer V9 (4Th) is more profitable at $-2.31/day compared to $-5.00/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 V9 (4Th)?
The Antminer K7 is quieter at 75 dB compared to the Bitmain Antminer V9 (4Th) at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Antminer K7 or Bitmain Antminer V9 (4Th)?
The Antminer K7 scores 36/100 on our Home Mining Score (vs 31/100 for the Bitmain Antminer V9 (4Th)). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Antminer K7 vs Bitmain Antminer V9 (4Th): how much does the efficiency gap matter?
The Antminer K7 runs at 48.5 J/TH while the Bitmain Antminer V9 (4Th) runs at 256.8 J/TH — a difference of 208.3 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 81% better efficiency (48.5 vs 256.8 J/TH).