Bitmain Antminer Z15 vs Bitmain Antminer Z9
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer Z15 | Specification | Bitmain Antminer Z9 |
|---|---|---|
| 420.0 Ksol/s | Hashrate | 42.0 Ksol/s |
| 1,510 W | Power Consumption | 970 W |
| 3.6 J/TH | Efficiency | 23.1 J/TH |
| — | Noise Level | — |
| 9,000.0 kg | Weight | 4,700.0 kg |
| 5,152 BTU/hr | BTU Output | 3,310 BTU/hr |
| 28/100 | Home Mining Score | 31/100 |
| — | Release Year | — |
| Equihash | Algorithm | Equihash |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer Z15
Bitmain Antminer Z9
Based on BTC price of $78,194 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Bitmain Antminer Z15 wins on 2 of 4 factors (efficiency, hashrate). The standout gap is 900% more hashrate (420.0 vs 42.0 TH/s) in the Bitmain Antminer Z15's favour. That said, the Bitmain Antminer Z9 isn't beaten everywhere — it still wins power consumption and home mining score. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
Here is every spec where the Bitmain Antminer Z15 and Bitmain Antminer Z9 actually differ, with the gap quantified:
- Bitmain Antminer Z15 900% more hashrate (420.0 vs 42.0 TH/s)
- Bitmain Antminer Z9 36% better power draw (1,510 vs 970 W)
- Bitmain Antminer Z15 84% better efficiency (3.6 vs 23.1 J/TH)
- Bitmain Antminer Z9 48% better weight (9,000 vs 4,700 kg)
- Bitmain Antminer Z15 56% more heat output (5,152 vs 3,310 BTU/hr)
- Bitmain Antminer Z9 11% more home mining score (28.0 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.
| Bitmain Antminer Z15 | Metric | Bitmain Antminer Z9 |
|---|---|---|
| $998 | Upfront cost (MSRP) | — |
| $11.49 | Daily net profit | -$0.82 |
| +$3,196 | Net after 1 year | -$298 |
| +$7,389 | Net after 2 years | -$596 |
| +$11,583 | Net after 3 years | -$894 |
| Pays for itself in ~87 days at current rates | 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
Bitmain Antminer Z15$12.31/day higher profit at current rates.
Best for Home Mining
Bitmain Antminer Z9Score: 31/100. 0 dB noise level.
Best for Efficiency
Bitmain Antminer Z153.6 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer Z15 or Bitmain Antminer Z9 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer Z15 is more profitable at $11.49/day compared to $-0.82/day for the Bitmain Antminer Z9. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer Z15 or Bitmain Antminer Z9?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
Which is better for home mining, the Bitmain Antminer Z15 or Bitmain Antminer Z9?
The Bitmain Antminer Z9 scores 31/100 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.
How far apart are the Bitmain Antminer Z15 and Bitmain Antminer Z9 on J/TH?
The Bitmain Antminer Z15 runs at 3.6 J/TH while the Bitmain Antminer Z9 runs at 23.1 J/TH — a difference of 19.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 84% better efficiency (3.6 vs 23.1 J/TH).