Sony has allocated 4.5GB of GDDR5 RAM to games, according to a new report on Eurogamer. It states that out of the 8GB GDDR5 RAM the system posseses, 4.5GB RAM is reserved for games, and 1GB is flexible memory which can be assigned to the games or the operating system.
So basically 3.5GB RAM is being assigned for things that are not games.
“PlayStation 4 reserves 3.5GB of its 8GB GDDR5 memory for the operating system, leaving 4.5GB of space for game code, according to current PlayStation 4 documentation shown to Digital Foundry by a well-placed development source,” the site wrote.
“However, further sources suggest that an additional 1GB of “flexible memory” may be reclaimed from the OS reservation, based on availability.”
This would mean the RAM allocation to the OS is the same as the one in the Xbox One, and that would nullify the advantage Sony has over Microsoft when it comes to RAM. The thing to note here is that the PS4 RAM is faster than the Xbox One RAM, but has a bit more latency.
Mark Cerny, lead architect of the PS4, had earlier revealed that the PS4 GDDR5 RAM latency wasn’t an issue.