Antminer K7 vs Bitmain Antminer S19j Pro (100Th)
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer K7 | Specification | Bitmain Antminer S19j Pro (100Th) |
|---|---|---|
| 63.5 TH/s | Hashrate | 100.0 TH/s |
| 3,080 W | Power Consumption | 3,050 W |
| 48.5 J/TH | Efficiency | 30.5 J/TH |
| 75 dB | Noise Level | — |
| 14.0 kg | Weight | 13,200.0 kg |
| 10,509 BTU/hr | BTU Output | 10,407 BTU/hr |
| 36/100 | Home Mining Score | 22/100 |
| — | Release Year | — |
| Eaglesong | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer K7
Bitmain Antminer S19j Pro (100Th)
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 Bitmain Antminer S19j Pro (100Th) edges it: 4 of 6 factors go its way (efficiency, hashrate, power consumption, price-performance). Where it pulls away hardest is 37% better efficiency (48.5 vs 30.5 J/TH). The Antminer K7 holds the edge in home mining score and noise level. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Spec Deltas
The Antminer K7 and Bitmain Antminer S19j Pro (100Th) diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Bitmain Antminer S19j Pro (100Th) 57% more hashrate (63.5 vs 100.0 TH/s)
- Bitmain Antminer S19j Pro (100Th) 1% better power draw (3,080 vs 3,050 W)
- Bitmain Antminer S19j Pro (100Th) 37% better efficiency (48.5 vs 30.5 J/TH)
- Antminer K7 100% better weight (14.0 vs 13,200.0 kg)
- Antminer K7 1% more heat output (10,509 vs 10,407 BTU/hr)
- Antminer K7 64% more home mining score (36.0 vs 22.0)
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.
| Antminer K7 | Metric | Bitmain Antminer S19j Pro (100Th) |
|---|---|---|
| $3,500 | Upfront cost (MSRP) | $600 |
| -$5.08 | Daily net profit | -$3.68 |
| -$5,355 | Net after 1 year | -$1,944 |
| -$7,210 | Net after 2 years | -$3,289 |
| -$9,066 | Net after 3 years | -$4,633 |
| Does not pay back at current rates (negative daily profit) | 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 K7Score: 36/100. 75 dB noise level.
Best for Efficiency
Bitmain Antminer S19j Pro (100Th)30.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Antminer K7 vs Bitmain Antminer S19j Pro (100Th): which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S19j Pro (100Th) is more profitable at $-3.68/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 S19j Pro (100Th)?
The Antminer K7 is quieter at 75 dB compared to the Bitmain Antminer S19j Pro (100Th) 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 S19j Pro (100Th)?
The Antminer K7 scores 36/100 on our Home Mining Score (vs 22/100 for the Bitmain Antminer S19j Pro (100Th)). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
What is the efficiency difference between Antminer K7 and Bitmain Antminer S19j Pro (100Th)?
The Antminer K7 runs at 48.5 J/TH while the Bitmain Antminer S19j Pro (100Th) runs at 30.5 J/TH — a difference of 18.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 37% better efficiency (48.5 vs 30.5 J/TH).