Key Takeaways
MicroBT introduced its petahash-level miner as mining competition and revenues tighten.
The 1.35 PH/s M79S boosts density but demands massive industrial power.
Efficiency now matters more than bitcoin price, with Bitmain slightly ahead.
Mining Efficiency Becomes the New Battleground
MicroBT has taken a major step forward in Bitcoin mining technology. At the Bitcoin MENA 2025 conference in Abu Dhabi, the company introduced its new WhatsMiner M70 series. The highlight of the launch is a powerful new machine that can produce more than one petahash per second (PH/s) of computing power on its own.
This launch comes at a tough time for Bitcoin miners. The total computing power of the Bitcoin network has passed one zettahash per second (ZH/s), which makes mining more competitive than ever. At the same time, mining income is near record lows, at about $35 per PH/s per day. For many miners, profits are shrinking fast.
MicroBT says the answer is better efficiency. During the launch, founder and CEO Yang Zuoxing explained that miners can no longer rely on bitcoin price increases alone. Instead, he said long-term success depends on using less electricity to produce the same amount of hashpower.
The company summed up this idea with the slogan, “Green-Driven, Ecosystem Redefined.” The most talked-about machine in the new lineup is the hydro-cooled WhatsMiner M79S.

The new Whatsminer M79S is a rack-mount device
In its highest performance mode, it can reach up to 1.35 PH/s, or 1,350 terahash per second. That makes it one of only two Bitcoin miners in the world capable of true petahash-level output. The other is Bitmain’s Antminer S23 Hydro 3U.
This level of power changes how mining farms can be built. One M79S can replace many older machines, saving space and simplifying operations. With this announcement, the individual mining power for each machine officially enters the PH/s era, offering power that once required entire racks of hardware.

Whatsminer M79S general specs
However, this hashrate comes at a cost. The M79S uses about 20,000 watts of electricity and runs at roughly 14.8 joules per terahash (J/TH). Bitmain’s competing machine uses less power and is more efficient, which gives it an advantage in daily earnings under today’s conditions.
Bitmain’s Antminer S23 Hydro 3U offers 1,160 TH/s at 11,000 watts, which gives it an efficiency of 9.5 J/TH.
Based on current estimates, Bitmain’s miner earns about $26.15 per day before electricity costs, while the M79S earns about $30.70. If electricity prices are factored in, the Bitmain device becomes more appealing. MicroBT notes that the M79S can also run in a lower-power mode, using around 14,000 watts and improving efficiency to about 13.5 J/TH.
While the M79S gets the most attention, the M70 series includes many other machines. MicroBT released air-cooled, hydro-cooled, and immersion-cooled models, giving miners options at different sizes and budgets.
Efficiency levels range from 14.5 J/TH down to a leading 12.5 J/TH. Air-cooled models like the M70 and M70S are designed for small and mid-size miners. They are easier to install and do not require special cooling systems.
These machines offer a simple upgrade path for operators who want better efficiency without major infrastructure changes. Hydro-cooled and immersion-cooled models target large industrial farms.
Machines like the M73S+ can reach up to 600 TH/s at 12.5 J/TH, making them some of the most efficient miners available today. Rack-mounted models such as the M79 series are built specifically for data centers with advanced power and cooling systems.
MicroBT is clear that these high-end machines are not for home use. As one description states, the M79S is “almost certainly not” suitable for home mining due to its massive power and cooling needs.
The miner’s price has not been officially announced. However, several websites across the internet have listed the device for presale, with prices ranging from $7,000 to as high as $20,000.





