When we talk about Bitcoin mining, the name that often stands out from the crowd is Bitmain. Their Antminer series of Bitcoin miners are widely regarded as some of the most reliable and powerful on the market. The Antminer S19j Pro is no exception, boasting an impressive blend of power, efficiency, and innovative design.
This article presents a thorough exploration of the Antminer S19j Pro, assessing its physical and performance characteristics, energy efficiency, cooling systems, and potential drawbacks.

The Antminer S19j Pro (100Th): Specifications and Performance Metrics

The Antminer S19j Pro is a robust and compact miner, measuring 195 x 290 x 370 mm and weighing approximately 13.2 kg. Its compact size and relatively light weight make it suitable for various mining setups, including home-based mining stations and larger mining farms.
In terms of performance, the S19j Pro provides a hash rate of approximately 100 ± 5% Terahashes per second (TH/s) while consuming around 2950 ± 5% Watts of power. This remarkable combination of power and efficiency makes it one of the most powerful and energy-efficient miners currently available.

Energy Efficiency: The J/T Ratio of Antminer S19j Pro

A crucial metric when considering a Bitcoin miner’s efficiency is its energy cost per Terahash or J/T. The J/T is a measurement of the amount of energy a miner uses to compute a terahash of data. The lower the J/T, the more energy-efficient the miner.
For the Antminer S19j Pro, with its power consumption of 2950 ± 5%W and a hash rate of 100 ± 5% TH/s, its J/T comes in at an impressive 29.5 ± 5% J/T. This high energy efficiency means that the S19j Pro offers exceptional performance while still keeping electricity costs relatively low, making it an excellent option for Bitcoin miners looking to maximize their return on investment.

Cooling Systems and Potential Disadvantages

To combat the significant heat generated during the mining process, the Antminer S19j Pro utilizes a dual-fan design. These fans, combined with heat sinks, work together to dissipate heat and keep the miner working within optimal temperature ranges. This air-cooling approach is relatively standard across the Antminer series and provides adequate cooling for most mining environments.
Despite its effectiveness, the cooling system in the S19j Pro does have a few potential disadvantages. Firstly, the fans can be quite loud, which may be a problem for miners in noise-sensitive environments. Secondly, while air-cooling is suitable for most situations, it is generally less effective than liquid-cooling systems, especially for larger mining operations or in environments with higher ambient temperatures.
The Antminer S19j Pro is a compact and powerful Bitcoin miner that offers an excellent balance of performance and efficiency. While its air-cooling system may have some potential drawbacks, particularly for large-scale mining operations or those in warmer climates, its high hash rate and low J/T ratio make it a strong contender for those seeking to maximize their Bitcoin mining returns.
As Bitcoin mining continues to grow more competitive, selecting the right miner becomes increasingly crucial. With its impressive specs and reliable performance, the Antminer S19j Pro represents a compelling choice for both amateur and professional miners alike.

Liquid Cooling Vs. Air Cooling: Why Upgrade?

Air cooling, the more traditional cooling method, uses fans and heat sinks to dissipate heat generated by the miner’s components. However, this method can be inefficient, particularly when dealing with powerful miners like the S19j series that generate a lot of heat. Air-cooled systems also have noise issues due to the fan operation and are more prone to dust accumulation, which can reduce their efficiency over time.
In contrast, liquid cooling systems like the TANKBOX use a dielectric coolant that directly contacts the components, absorbing and carrying away heat much more efficiently than air. These systems are also quieter, more dust-resistant, and allow for more compact setups due to their superior heat removal capabilities.

SAI’s TANKBOX Cooling System

The Antminer series typically uses a traditional air-cooling system. However, as the demand for high-performance mining increases, more efficient cooling methods are required. SAI‘s TANKBOX cooling system offers such an alternative. Designed as a liquid immersion cooling solution, the TANKBOX can replace the original air cooling system of the Antminer models, offering significant advantages.

Advantages of SAI’s TANKBOX

The TANKBOX isn’t just a regular liquid cooling system; it’s a specialized solution designed with advanced features. It can significantly reduce the overall operating temperature of the mining hardware, increasing its lifespan and potentially allowing for safer overclocking, thereby boosting mining performance.
The TANKBOX is also adaptable to varying climates, with an operational temperature range of -40 to 50°C. This wide range means miners in different geographical locations can use the system without concerns about environmental temperature.
Additionally, the TANKBOX’s liquid immersion cooling method minimizes common issues such as overheating, fan failure, noise, and dust, improving reliability and reducing maintenance needs. Moreover, it enables waste heat recovery, facilitating energy reuse and supporting zero carbon emission goals. This potential for ‘green’ operation aligns with the growing need for environmentally friendly mining operations.


In summary, while the Antminer S19j Pro offers significant mining capabilities, which mining machine to use depends on the miner’s priorities regarding power and energy efficiency. However, irrespective of the choice, upgrading the miner’s cooling system with SAI’s TANKBOX can significantly improve its performance, longevity, and environmental footprint. It’s a worthy consideration for any miner looking to optimize their operations and embrace more sustainable practices.