He made a good point about the 32bit vs 64bit. Even though a good percentage of PC owners have Windows 7 which is predominately 64bit, as far as I know, all PC games are 32bit executables which does restrict memory addressing to a max of 4GB. Was just searching the web to see if there is such thing as a Crysis 3 64bit EXE. I don't think there is. Though Crytek recommend a PC with 8GB, this would ensure the EXE gets a full 4GB with Windows having access for the rest. But I would think if any developer makes a cross platform game, most likely it will be native 32bit because of PC legacy.
Interesting point though. Does this mean in theory, that PS4 and 720 games could always be compiled in 64bit which equates to the full memory being adressible? This was all irrelevant with the last consoles since RAM was so small.
I think in the PS4, there will be a reserve or portion of the 8GB GDDR5 for the system; who knows, maybe 2GB, but I think it is safe to assume that gaming on the PS4 can access more than the 32bit limit of 4GB.
