Badassbab on 23 January 2014
I think the RAM allocation on PS4 is wrong. It should read 4.5GB conventional RAM available for games plus 1GB OS controlled flex memory split into two. 512MB physical and 512MB paged. So in reality Developers get 5GB like the Xbone.
http://www.eurogamer.net/articles/digitalfoundry-ps3-system-software-memory
