Which is the most significant (important) console in history?

[SecondWar]

Other, went with the original PlayStation, as it basically kickstarted the modern video game market. NES second for me, just as it didn't push teh market's popularity as far as the PS did.

VAMatt said:

PSX ushered in 3D graphics, and was the first significant console released by non-gaming focus company. Without the success of PSX, I doubt that we would have MS in the industry now. Without Sony and MS, the gaming world would be a really different place.

https://en.m.wikipedia.org/wiki/PSX_(digital_video_recorder)

Are you talking about something else? The only info I could find on the PSX says its a peripheral for the PS2, so not even a console.