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| Parameter | Specification |
|---|---|
| Manufacturer | MicroBT |
| Model | WhatsMiner M78S |
| SKU | WhatsMiner M78S |
| Release Date | December 2025 |
| Algorithm | SHA-256 |
| Hash Rate | 472–522 TH/s |
| Power Efficiency | 13.5 J/TH |
| Cooling System | Immersion Cooling (Oil-Cooled) |
| Input Voltage | AC 380 V – 480 V |
| Dimensions (L×W×H) | 267 × 147 × 401 mm |
| Weight | 22,000g (22.0 kg) |
| Noise Level | 75dB |
| Interface | Ethernet |
| Operating Temperature | 5 – 45 °C |
| Operating Humidity | 5 – 95 % |
The MicroBT WhatsMiner M78S is a premium oil‑cooled ASIC miner engineered for the highest echelons of efficient, high-density Bitcoin mining. Designed specifically for the SHA‑256 algorithm, it delivers an impressive hash rate range of 472–522 TH/s alongside an exceptional 13.5 J/TH energy efficiency. This advanced immersion cooling system is the cornerstone of its performance, guaranteeing stable operating temperatures, whisper-quiet 75dB operation, and a completely dust-free environment that drastically reduces maintenance demands and significantly extends hardware lifespan. Whether for expansive, high-density mining farms or optimized compact setups, the M78S is meticulously crafted to maximize Bitcoin output while minimizing energy consumption, offering professional miners a cutting-edge solution in oil-cooled cryptocurrency mining.
472–522 TH/s Hash Rate – Exceptional computational power for top-tier Bitcoin mining profitability.
13.5 J/TH High Energy Efficiency – Premium efficiency that directly translates to lower electricity costs and superior profit margins.
Industrial High-Voltage Input – Operates on AC 380V – 480V three-phase power for optimal performance in professional data centers.
SHA-256 Algorithm Optimized – Dedicated hardware for maximum Bitcoin (BTC) mining output.
Ensures Stable Temperatures – Maintains consistent thermal conditions for unwavering hash rate stability and hardware reliability.
Silent, Dust-Free Operation – The sealed immersion system operates at a low 75dB and eliminates dust ingress, the primary cause of failure in air-cooled units.
Dramatically Reduces Maintenance – No fans to clean or replace, leading to significantly lower operational overhead and higher uptime.
Extends Hardware Lifespan – Minimizes thermal stress on ASICs and components, protecting your long-term capital investment.
Superior Heat Dissipation – Advanced cooling architecture provides optimal thermal stability under continuous 24/7 loads.
Maximizes BTC Output – Designed to deliver the highest possible mining yield within its efficiency class.
Minimizes Energy Consumption – The 13.5 J/TH rating ensures more work is done per watt of electricity consumed.
Ideal for High-Density & Compact Setups | Versatile design supports deployment in both large-scale farms and space-optimized configurations.
Premium Tier Performance – Delivers hash rates up to 522 TH/s, placing it at the top of its performance category.
Best-in-Class 13.5 J/TH Efficiency – This elite efficiency metric is critical for maintaining profitability against rising network difficulty and energy costs.
Consistent, Reliable Output – Advanced immersion cooling prevents thermal throttling, ensuring you realize the full advertised hash rate 24/7.
Unmatched Hardware Longevity – Cooler, stable operation directly correlates to a longer operational lifespan for your mining assets.
Transformational Operational Simplicity – Eliminate the constant battle against dust and fan failures that plague traditional mining farms.
Enables Maximum Density | The robust cooling allows for tighter packing of units, maximizing the hash power per square foot of your facility.
Quiet and Clean Operation | Create a more manageable and sustainable mining environment.
Optimized Total Cost of Ownership (TCO) | While a premium solution, its efficiency, low maintenance, and extended lifespan deliver a superior lifetime ROI.
Future-Proof Your Mining Operation | Investing in 13.5 J/TH technology prepares your business for the future of energy-conscious mining.
Cutting-Edge Solution | Position your operation at the forefront of mining technology with advanced oil-cooling architecture.
Scalable Foundation | Perfect for building or expanding a high-performance, efficient immersion mining fleet.
Optimized for Dielectric Fluid | Every component, from the PCB substrate to connectors, is selected for compatibility and performance in an oil-immersion environment.
Enhanced Thermal Mass Design | The construction facilitates rapid and even heat transfer from the ASICs into the surrounding cooling fluid.
Robust 22kg Build | The increased weight (vs. some models) often indicates a more substantial heatsink or construction, contributing to its thermal stability.
Total Component Submersion | Unlike hybrid cooling, full immersion ensures every hot component is directly and uniformly cooled.
Passive and Inherently Reliable | Removes all internal moving parts (fans), relying on the external immersion system’s pumps for circulation.
Complete Environmental Isolation | Provides an unparalleled defense against moisture, dust, and corrosive elements.
Next-Gen Immersion Data Centers | The ideal workhorse for professional facilities designed around maximum hash density and efficiency.
Fleet Modernization | Replace multiple older, less efficient miners with fewer M78S units to increase total hash power while decreasing power consumption.
Maximizing Infrastructure Investment | Extract the highest possible return from your capital expenditure on power distribution and cooling systems.
Operations in High-Cost Energy Regions | The 13.5 J/TH efficiency is not an option but a necessity for profitability where electricity is expensive.
Sustainable Mining Initiatives | Achieve a significantly better performance-per-watt ratio, reducing the overall carbon footprint of your mining activities.
Long-Term Asset Holders | For miners who view hardware as a multi-year investment where durability and efficiency dictate ultimate returns.
Tier-1 Hosting Service Asset | Offer clients a premium, high-uptime, low-maintenance mining solution with clear efficiency advantages.
Institutional-Grade Equipment | Suitable for corporate or fund-backed mining ventures that require reliable, top-tier hardware.
Uniform Fleet Deployment | Simplifies management, optimization, and maintenance when deploying a large number of identical, high-performance units.
Immersion Cooling System: Mandatory. Must be installed in a professionally engineered immersion tank containing dielectric fluid, with integrated pumps, filtration, and external heat exchangers or dry-coolers.
Industrial Power Supply: Requires a stable, dedicated three-phase AC 380-480V circuit with appropriate safety breakers and conditioning.
Tank Integration: The miner is designed to be fully submerged. Layout planning for fluid flow and spacing is crucial.
Network Connectivity: Utilizes Ethernet connectivity via waterproof pass-through connectors designed for immersion environments.
Fluid Quality Management: Use only specified dielectric fluids and implement a rigorous schedule for testing fluid purity and particulate levels.
Systematic Thermal Management: Ensure the external cooling loop has adequate capacity to handle the combined thermal load of all miners in the tank.
Professional Installation & Service: Engagement with specialists in immersion cooling system design and maintenance is highly recommended.
Proactive Remote Monitoring: Implement comprehensive monitoring for individual miner hash rate, efficiency, and the health of the immersion system parameters (fluid temp, flow rate).
Q: Is the WhatsMiner M78S better than the standard M78 model?
A: Yes, the M78S is an enhanced model. It offers a higher hash rate (472-522T vs. 440-486T) and superior efficiency (13.5 J/T vs. 14.5 J/T), representing a clear performance and economic upgrade for serious mining operations.
Q: Can I run this miner in a standard server rack with air cooling?
A: No, under any circumstances. The M78S is an immersion-cooled (oil-cooled) miner. It must be fully submerged in a tank of dielectric fluid. Operating it in air will cause instant, catastrophic overheating and permanent damage.
Q: What are the real-world benefits of “dust-free performance”?
A: Dust is a major killer of air-cooled miners, clogging fans and heatsinks, causing overheating and failures. A dust-free immersion environment eliminates this entire category of problems, leading to dramatically higher hardware reliability and uptime.
Q: What kind of setup is required for this miner?
A: It requires a complete immersion mining infrastructure: a sealed tank filled with dielectric fluid, a circulation pump system, and an external method to reject the heat (like a cooling tower or dry-cooler). This is a professional data center solution, not a plug-and-play home device.
Q: Why is the 13.5 J/TH efficiency so important?
A: This figure represents energy efficiency. A lower J/TH means you use less electricity to produce the same amount of hash power. In an industry where electricity is the largest ongoing cost, 13.5 J/TH is a top-tier rating that directly and significantly increases your mining profitability and protects you against rising energy prices.
The WhatsMiner M78S is engineered for the mining visionary who recognizes that long-term dominance is built on superior technology. It’s not merely about hash rate; it’s about achieving that hash rate with intelligent efficiency and relentless reliability. Choose the M78S to power the most advanced, profitable, and sustainable chapter of your Bitcoin mining enterprise.
🎯 Perfect For:
Professional mining operations building or expanding immersion-cooled data centers.
Miners for whom cutting-edge efficiency (13.5 J/TH) is the primary investment criterion.
Large-scale and institutional operations requiring maximum output density and minimum operational overhead.
Forward-thinking miners investing in the sustainable future of Bitcoin mining.
*Note: The MicroBT WhatsMiner M78S is a specialized immersion-cooled mining system. Operation is strictly contingent upon being fully integrated into a compatible dielectric fluid immersion cooling infrastructure. Operating this unit outside of its intended immersion environment will result in immediate and irreparable damage. Installation, maintenance, and handling must be performed by qualified professionals.*
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