Antminer K7 vs Bitmain Antminer Z15
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer K7 | Specification | Bitmain Antminer Z15 |
|---|---|---|
| 63.5 TH/s | Taux de hachage | 420.0 Ksol/s |
| 3,080 W | Consommation électrique | 1,510 W |
| 48.5 J/TH | Efficiency | 3.6 J/TH |
| 75 dB | Niveau de bruit | — |
| 14.0 kg | Weight | 9.0 kg |
| 10,509 BTU/hr | BTU Output | 5,152 BTU/hr |
| 36/100 | Home Mining Score | 28/100 |
| — | Release Year | — |
| Eaglesong | Algorithme | Equihash |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer K7
Bitmain Antminer Z15
Based on BTC price of $64,340 and current network difficulty as of Jun 4, 2026. Actual results vary.
Verdict
Weighing six performance factors, the Bitmain Antminer Z15 comes out ahead — it takes 4 of 6 (efficacité, hashrate, consommation électrique, rapport qualité-prix). The standout gap is 93% better efficacité (48.5 vs 3.6 J/TH) in the Bitmain Antminer Z15's favour. That said, the Antminer K7 isn't beaten everywhere — it still wins score de minage domestique and niveau sonore. Cross-check the spec deltas and operating-cost table above against your own electricity rate before deciding.
Spec Deltas
Here is every spec where the Antminer K7 and Bitmain Antminer Z15 actually differ, with the gap quantified:
- Bitmain Antminer Z15 561% more hashrate (63.5 vs 420.0 TH/s)
- Bitmain Antminer Z15 51% better power draw (3,080 vs 1,510 W)
- Bitmain Antminer Z15 93% better efficacité (48.5 vs 3.6 J/TH)
- Bitmain Antminer Z15 36% better weight (14.0 vs 9.0 kg)
- Antminer K7 104% more heat output (10,509 vs 5,152 BTU/hr)
- Antminer K7 29% more score de minage domestique (36.0 vs 28.0)
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 Z15 |
|---|---|---|
| $3,500 | Upfront cost (MSRP) | $998 |
| -$5.54 | Daily net profit | $8.60 |
| -$5,523 | Net after 1 year | +$2,141 |
| -$7,547 | Net after 2 years | +$5,281 |
| -$9,570 | Net after 3 years | +$8,420 |
| Does not pay back at current rates (negative daily profit) | Payback period | Pays for itself in ~4 months at current rates |
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
Bitmain Antminer Z15$14.14/day higher profit at current rates.
Best for Home Mining
Antminer K7Score: 36/100. 75 dB noise level.
Best for Efficiency
Bitmain Antminer Z153.6 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Antminer K7 or Bitmain Antminer Z15 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer Z15 is more profitable at $8.60/day compared to $-5.54/day for the Antminer K7. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Antminer K7 vs Bitmain Antminer Z15: which runs at a lower noise level?
The Antminer K7 is quieter at 75 dB compared to the Bitmain Antminer Z15 at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Antminer K7 vs Bitmain Antminer Z15: which fits a residential setup better?
The Antminer K7 scores 36/100 on our Home Mining Score (vs 28/100 for the Bitmain Antminer Z15). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Antminer K7 vs Bitmain Antminer Z15: how much does the efficiency gap matter?
The Antminer K7 runs at 48.5 J/TH while the Bitmain Antminer Z15 runs at 3.6 J/TH — a difference of 44.9 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 93% better efficacité (48.5 vs 3.6 J/TH).