ASIC Review
Antminer Z15 vs Z15 Pro: Which Equihash Miner Should You Buy?
The Z15 Family: Bitmain’s Equihash Champions
The Antminer Z15 and Z15 Pro both mine Equihash — the algorithm behind Zcash (ZEC) and several privacy coins. Both are built by Bitmain with proven reliability records. But they serve different use cases.
Specs: Head-to-Head
| Spec | Antminer Z15 | Antminer Z15 Pro |
|---|---|---|
| Hashrate | 420 kh/s | 840 kh/s |
| Power consumption | 1,510W | 2,780W |
| Efficiency | 3.6 j/kSOL | 3.31 j/kSOL |
| Noise | 72 dB | 75 dB |
| Price (MinerKuber) | ~$420 | ~$840 |
The Z15 Pro delivers 2x the hashrate at 1.84x the power — meaning it’s more efficient per sol/s. And since fixed costs (pool fees, hosting slot) are the same at either hashrate, the Pro scales better.
Profitability Comparison (at $0.065/kWh, June 2026)
| Metric | Z15 (420 kh/s) | Z15 Pro (840 kh/s) |
|---|---|---|
| Daily revenue | $21.10 | $42.19 |
| Daily electricity | $2.36 | $4.34 |
| Daily net profit | $18.74 | $37.85 |
| Machine price | $420 | $840 |
| Payback period | ~22 days | ~22 days |
The payback period is nearly identical — but the Z15 Pro earns twice as much per day. Same ROI speed, double the output. For hosted miners, the Pro is the obvious choice.
Z15: When It Makes Sense
- Your budget is limited and you want to start smaller
- You’re testing Equihash mining for the first time
- You want to scale gradually: start with one Z15, add more over time
Z15 Pro: When It Makes Sense
- You want maximum earnings per hosting slot
- You’re mining professionally and hosting off-site
- You have the budget for the higher upfront investment
Our Recommendation
Buy the Z15 Pro. At an 18-day payback at current ZEC prices, it’s the best ROI machine we currently stock. The efficiency advantage and double daily income make it the clear winner for any serious miner.
Buy the Antminer Z15 Pro
Currently the highest-ROI miner we stock — 18-day payback at $0.065/kWh.
