Antminer K7 vs Bitmain Bitcoin Miner S19j XP
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer K7 | Specification | Bitmain Bitcoin Miner S19j XP |
|---|---|---|
| 63.5 TH/s | Hashrate | 151.0 TH/s |
| 3,080 W | Power Consumption | 3,247 W |
| 48.5 J/TH | Efficiency | 21.5 J/TH |
| 75 dB | Noise Level | — |
| 14.0 kg | Weight | — |
| 10,509 BTU/hr | BTU Output | 11,079 BTU/hr |
| 36/100 | Home Mining Score | 22/100 |
| — | Release Year | — |
| Eaglesong | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer K7
Bitmain Bitcoin Miner S19j XP
Based on BTC price of $78,004 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Weighing six performance factors, the Bitmain Bitcoin Miner S19j XP comes out ahead — it takes 3 of 6 (efficiency, hashrate, price-performance). Its biggest concrete edge: 138% more hashrate (63.5 vs 151.0 TH/s). That said, the Antminer K7 isn't beaten everywhere — it still wins power consumption and home mining score and noise level. Cross-check the spec deltas and ROI table above against your own electricity rate before deciding.
Spec Deltas
The Antminer K7 and Bitmain Bitcoin Miner S19j XP diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Bitmain Bitcoin Miner S19j XP 138% more hashrate (63.5 vs 151.0 TH/s)
- Antminer K7 5% better power draw (3,080 vs 3,247 W)
- Bitmain Bitcoin Miner S19j XP 56% better efficiency (48.5 vs 21.5 J/TH)
- Bitmain Bitcoin Miner S19j XP 5% more heat output (10,509 vs 11,079 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 Bitcoin Miner S19j XP |
|---|---|---|
| $3,500 | Upfront cost (MSRP) | $999 |
| -$5.11 | Daily net profit | -$2.37 |
| -$5,366 | Net after 1 year | -$1,865 |
| -$7,232 | Net after 2 years | -$2,731 |
| -$9,098 | Net after 3 years | -$3,597 |
| 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 Bitcoin Miner S19j XP21.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Antminer K7 vs Bitmain Bitcoin Miner S19j XP: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Bitcoin Miner S19j XP is more profitable at $-2.37/day compared to $-5.11/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 Bitcoin Miner S19j XP?
The Antminer K7 is quieter at 75 dB compared to the Bitmain Bitcoin Miner S19j XP at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Antminer K7 vs Bitmain Bitcoin Miner S19j XP: which fits a residential setup better?
The Antminer K7 scores 36/100 on our Home Mining Score (vs 22/100 for the Bitmain Bitcoin Miner S19j XP). 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 Bitcoin Miner S19j XP?
The Antminer K7 runs at 48.5 J/TH while the Bitmain Bitcoin Miner S19j XP runs at 21.5 J/TH — a difference of 27.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 56% better efficiency (48.5 vs 21.5 J/TH).