Antminer Z15 vs Z15 PRO: The Ultimate 2025 Equihash Mining Comparison

The Antminer Z15 and Z15 PRO stand among the most successful Equihash ASIC miners available in 2025. Designed for mining privacy-focused cryptocurrencies like Zcash (ZEC) and Horizen (ZEN), these miners deliver exceptional power efficiency, long-term stability, and consistently strong mining profitability.

In this guide, we compare the Z15 and Z15 PRO in detail—covering performance, mining profitability, power efficiency, noise, setup, environmental requirements, ZEC/ZEN coin introduction, and which machine is right for you in 2025.

1. What Are Antminer Z15 and Z15 PRO?

The Antminer Z15 was Bitmain’s breakthrough Equihash miner, offering an extremely efficient 420 KSol/s hashrate with low power consumption. It quickly became the industry’s most trusted ZEC miner.

The Antminer Z15 PRO is the upgraded version, delivering double the performance while maintaining excellent efficiency, making it the most powerful Equihash ASIC miner Bitmain has ever released.

✔ Key Differences at a Glance

2. ZEC & ZEN – Two Major Coins for Z15 & Z15 PRO

2.1 Zcash (ZEC) – The Top Privacy Coin

Zcash (ZEC) is known for its industry-leading privacy technology powered by zk-SNARKs, allowing users to transact with full encryption while keeping the blockchain valid and secure.

Why ZEC is ideal for Z15 miners:

• Uses the Equihash algorithm
• High liquidity & long-term user base
• Strong developer ecosystem
• Consistent block rewards
• One of the most profitable Equihash coins

ZEC has been the primary mining target of the Z15 series since its launch.

2.2 Horizen (ZEN) – A Privacy Infrastructure Ecosystem

Horizen (ZEN) is more than a cryptocurrency — it’s a full privacy-focused computing ecosystem supporting:

• Sidechains
• EVM compatibility
• Zero-knowledge applications
• Decentralized services

Why ZEN is great for Z15 PRO:

• Also based on Equihash
• Competitive profitability vs ZEC
• Enterprise adoption increasing
• Strong long-term use cases

For miners looking to diversify, ZEN is one of the strongest alternatives to ZEC.

3. Antminer Z15 Specifications

The Bitmain Antminer Z15 is a highly efficient Equihash miner designed for stable and profitable long-term operation. Delivering 420 KSol/s hashrate with only 1510W of power consumption, it offers an excellent efficiency rating of 3.6 J/KSol, making it a strong choice for mining Zcash (ZEC), Horizen (ZEN), and other Equihash-based coins.

4. Antminer Z15 PRO Overview (840 KSol/s)

Bitmain Antminer Z15 Pro is an ASIC miner designed for Equihash algorithm (Equihash Miner), specifically targeting ZEC (Zcash) and ZEN (Horizen). It delivers a maximum hashrate of 840kh/s while consuming 2780W of power, resulting in an energy efficiency of 3.31j/kSOL. With double the hashrate of the original Z15 and improved energy efficiency, the Z15 Pro delivers stable, high-performance 24/7 mining for users seeking top-tier Equihash profitability.

5. Z15 vs Z15 PRO: Full Comparison

In real-world use, the Z15 PRO delivers almost exactly double the performance of the Z15 while maintaining superior efficiency.

6. Step-by-Step Setup Guide (Z15 & Z15 PRO)

Both miners share nearly identical setup steps.

Step 1: Hardware Connections

• 3× PCIe 12V cables per hashboard
• 1× PCIe 12V cable for the control board
• Plug Ethernet cable into the “ETH” port

Step 2: Obtain IP Address

• Use Bitmain IP Reporter
• Or check router DHCP list

Note: The server and the computer must be connected to the same network; otherwise, they will not be able to receive the signals sent back by the server.

Step 3: Login to Dashboard

• Default login: root / root
• Change password immediately

Step 4: Configure Mining Pool

Go to Configuration → Mining Pool
Enter:

• Pool URL
• Worker (wallet or worker name)
• Password (x)

Step 5: Temperature Safety

• Auto shutdown at 80°C PCB
• Shutdown at 110°C chip temp

Z15 PRO has improved cooling, but environmental airflow still matters.

Step 6: Save and Start Mining

The miner will begin hashing within 1–2 minutes.

Note: The Z15 server is a frequency-sweeping machine. When the PCB temperature reaches 80℃ or the chip temperature reaches 110℃, the firmware will stop running and an error message “Fatal Error: Temperature is too high!” will appear at the bottom of the kernel log page.

7. Environment Requirements for Best Performance

Recommended:

• Temperature: 25–30°C
• Humidity: < 65%
• Avoid dust & pollution
• Stable voltage & proper grounding
• Never use POE switches
• Keep miner in a clean, ventilated room

Avoid:

• Polluted industrial zones
• High-salt coastal areas
• Confined spaces without airflow

Good environmental control significantly impacts hashrate stability and miner lifespan.

8. Profitability & ROI in 2025

Z15

• Lower power consumption
• Great for home setups
• Stable long-term ROI
• Quieter for indoor use

Z15 PRO

• Double ZEC/ZEN output
• Good for farms with low electricity costs
• Faster ROI
• Best choice for maximizing profit per square meter

If your electricity rate is ≤ $0.10/kWh, the Z15 PRO provides superior long-term returns.

9. Who Should Buy the Z15 or Z15 PRO?

✔ Choose Z15 if:

• You mine at home
• You prefer lower noise
• Your electricity cost is higher
• You want stable, long-lasting hardware
• You want a budget-friendly Equihash miner

✔ Choose Z15 PRO if:

• You want the highest Equihash performance
• You mine in a farm or industrial environment
• Your electricity is cheap
• You want the fastest ROI
• You want to maximize ZEC/ZEN production

Conclusion

Both the Antminer Z15 and Antminer Z15 PRO stand as two of the most efficient and profitable Equihash ASIC miners available in 2025. The Z15 remains the ideal option for home miners and users with higher electricity pricing, offering stable long-term ZEC production with minimal heat and noise. Meanwhile, the Z15 PRO delivers double the hashrate and superior energy efficiency, making it the top choice for professional mining operations and anyone seeking faster ROI.

By choosing the right model—paired with optimized pool settings, proper maintenance, and strategic power management—you can significantly boost your mining income and extend the lifespan of your equipment. As the demand for privacy tokens like Zcash continues to grow, the Z15 series remains one of the most reliable ways to mine Equihash coins steadily and profitably.

Thank you for your patient reading. For any inquiries or to explore these miners further, welcome to contact BT-MINERS.