A fifth-grade student has made a supercomputer at home.

He didn't spend a lot of money and time for device. The price was too low and gave hope to repeat project.
It didn't mean that hand-made supercomputer could compete with industrial or science supercomputers.

However,the scheme of hand-made supercomputer was made on single-board computers. It gave opportunity to increase the power by adding new single-board. Computer's power was sufficient to solve complex task such us: computational science, weather forecasting, physical simulations and so on.
Alternatively, we could use that kind of supercomputers like a masternode.

P.S.
Original article in Russian
https://www.iguides.ru/main/other/rossiyskiy_pyatiklassnik_sobral_miniatyurnyy_superkompyuter_za_10000_rubley/?utm_referrer=https%3A%2F%2Fzen.yandex.com