The computing tool with the strongest computing power and the fastest computing speed is Tianhe-2.

Tianhe-2, a Chinese supercomputer, is one of the most powerful and fastest computing supercomputers in the world. It was developed by China's National Center for High Performance Computing in Shenzhen and in June 2013 was officially released. As of my knowledge as of 2021, Tianhe-2 remains the highest performing supercomputer in the world.

The Tianhe-2 utilizes a massively parallel computing architecture, and it is capable of amazing computational speeds, capable of performing more than tens of trillions of computing operations per second. This powerful computing capability makes it useful in a wide range of fields.

First, in the field of scientific research, Tianhe-2 is widely used for large-scale simulations and calculations in meteorology, earthquakes, astronomy and other fields, helping scientists better understand and predict natural phenomena. It also plays a key role in computation in fields such as materials science and biomedicine, accelerating the research and development of new materials and promoting disease simulation and drug screening in the medical field.

Secondly, in the field of engineering, Tianhe-2 is widely used in the simulation and optimization design of complex systems such as aerospace and automobile manufacturing. It can simulate a variety of extreme environments to help engineers identify problems in advance and improve product quality and performance.

In addition, in the field of big data processing and artificial intelligence, Tianhe-2 also plays an important role. It has powerful data processing capabilities to handle massive amounts of data and performs efficient calculations in AI fields such as deep learning, accelerating the development and application of AI technology.

The powerful performance of Tianhe-2 is not only a reflection of its hardware facilities, but also a symbol of China's continuous innovation and development in the field of supercomputing. Its launch marks China's world-renowned achievements in the field of supercomputing, providing solid support for the country's progress in many fields, including science and technology innovation, engineering and technology.

Overall, Tianhe-2, as a representative of China's supercomputing field, is equipped with powerful computing capabilities and is widely used in scientific research, engineering design, big data processing, and artificial intelligence, providing important support for advancing development and innovation in various fields.