Generations 1 to 4 were cartridge based systems restricted by the limitations of old technology from the 1970s to the early 1990s.
Generation 5: The Play Station (PSX) introduced CD format that significantly improved upon cartridges. Nintendo sticking with cartridges was a huge mistake and limited N64. PSX outsold N64 by a huge margin in world wide console sales. Third party developers released more games on the PS due to CD being easier to port/develop games than the cartridge based N64.
Generation 6: The PS2's introduction of DVD format, improved performance and storage capacity over CD format.
Generation 7: The PS3 introduced Blu-Ray player stores more content/data on a disc than DVD discs. 7th generation made online gaming and online game purchases and content popular during 7th generation.
Generation 8: Has been a run away victory for the PS4 over its competitors. 8th generation has been an increase in game console storage capacity and improvement in online gaming/content.







