By using this site, you agree to our Privacy Policy and our Terms of Use. Close
Adinnieken on 27 July 2013
Edit Thread
Nsanity said:

Eurogamer

UPDATE: A new source familiar with the matter has provided additional information to Digital Foundry that confirms only 4.5GB of the PS4's 8GB GDDR5 memory pool is guaranteed to game developers right now, while also clarifying how the PS4's "flexible memory" works in practice.

In real terms, an additional 512MB of physical RAM may be available in addition to the 4.5GB mentioned in the SDK. Flexible memory consists of physical and virtual spaces, and the latter introduces paging issues which impact performance. In our original story we combined them together.

For practical game applications, the correct figures for this story, as we understand it now, are a guaranteed 4.5GB for development and a further 512MB from the flexible pool. We have updated the headline accordingly.

http://www.eurogamer.net/articles/digitalfoundry-ps3-system-software-memory

This is not good.  The last thing you want to do is have to page data in a disk cache.  It's much less efficient.