Bitmain Antminer Z15 Pro
Bitmain- Hashrate
- 840.0 Ksol/s
- Power
- 2,780W
- Efficiency
- 3.3 J/TH
- Noise
- N/A
- BTU Output
- 9,485 BTU/hr
- Price
- $1,800
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Bitcoin accepted at checkout | Ships from Laval, QC, Canada | Expert support since 2016
Maximum hashrate per watt — the efficiency kings of Bitcoin mining.
Efficiency (measured in joules per terahash, or J/TH) determines how much hashrate you get per watt of electricity. Lower J/TH means better efficiency. These are the most power-efficient Bitcoin miners available, ranked from best to worst efficiency.
| Rank | Miner | Efficiency (J/TH) | Price | |
|---|---|---|---|---|
| 1 | Bitmain Antminer Z15 Pro | 3.3 J/TH | $1,800 | Details ↓ |
| 2 | Bitmain Antminer Z15 | 3.6 J/TH | $998 | Details ↓ |
| 3 | Bitmain Antminer S23 Hyd 3U | 9.5 J/TH | $7,988 | Details ↓ |
| 4 | Bitmain Antminer S23 Hyd | 9.5 J/TH | $12,995 | Details ↓ |
| 5 | Bitmain Antminer S23e U2H | 10.0 J/TH | $19,600 | Details ↓ |
Showing top 5 of 560 qualifying miners. Scroll down for full details.
Miners are ranked by Efficiency (J/TH) (lowest first). Profitability is calculated server-side using live BTC price and network difficulty, with a default electricity rate of $0.0735/kWh (Quebec average). Daily revenue uses the standard formula: (hashrate x 10^12 x 86,400 x block_reward) / (difficulty x 2^32). You can adjust the electricity rate above to recalculate profitability for your location.
All data comes from our ASIC Miner Database. Scores, specs, and profitability update automatically. Only miners meeting this page's filter criteria are shown.
J/TH (joules per terahash) measures efficiency — how much energy a miner uses per unit of hashrate. Lower is better. The best 2026 miners achieve 15-20 J/TH compared to 80+ J/TH for older models.
Efficiency directly impacts profitability. A more efficient miner produces the same hashrate for less electricity cost. At high electricity rates, efficiency is the difference between profit and loss.
The latest-generation ASICs from Bitmain (S21 series) and MicroBT (M60 series) lead in efficiency. Check our live rankings above — they update automatically as new models are added.
It depends on your electricity cost. At cheap rates (under $0.08/kWh), raw hashrate matters more. At expensive rates (over $0.15/kWh), efficiency is critical for profitability.
Open-source miners like Bitaxe use the same ASIC chips as commercial miners (BM1366, BM1368) and achieve similar per-chip efficiency. Their total hashrate is lower but efficiency per watt is competitive.
Browse all 108+ miners with live profitability data, specs, and filtering. The most comprehensive Bitcoin miner database available.
Explore DatabaseSelect up to 4 miners and compare them side-by-side on specs, profitability, noise, and home mining viability.
Compare ToolEnter your miner specs and electricity rate for a detailed profitability breakdown with live BTC price and difficulty.
Calculate ProfitRankings update automatically with live market data. Profitability estimates use current BTC price and network difficulty and do not account for pool fees, hardware degradation, or price changes. Not financial advice. Electricity rate default is Quebec residential ($0.0735/kWh).
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