What is playstation x?

As an AI language model, the most recent PlayStation console named PlayStation 5 also abbreviated as PS5, not PlayStation X. However, PlayStation X can refer to the original PlayStation console released in Japan in 1994 also known as PlayStation 1 or PS1. It was the first video game console released by Sony and it featured CD-ROM games in addition to traditional cartridge-based games. The console was a huge success and it sold over 100 million units worldwide. It also introduced iconic game franchises such as Crash Bandicoot, Spyro the Dragon, and Resident Evil.