It is a garbage article. You absolutely need new hardware, the tests that show double speed are done with a dedicated AI addon card, as this better article details:

https://www.tomshardware.com/pc-components/cpus/multi-threaded-computing-across-multiple-processors-demoed-promises-big-gains-in-ai-performance-and-efficiency

It also requires that software is rewritten to take advantage of the new hardware, and some tasks show little to no gain.