PS3 memory foot print explained
Via Inner Bit,
First, the base memory footprint of the PS3 OS in main memory has been reduced from 56 MB to 52 MB. These values will lead to some confusion, as we?ve previously reported that the memory footprint was 64 MB. 8MB of memory was given back to developers sometime before Christmas, and now a further 4 MB has been returned. Currently, as of SDK 1.60, the PS3 operating system takes up 52 MB of main memory and 32 MB of graphics memory (84 MB total). As a comparison, the Xbox 360 still only uses 32 MB of shared memory for all its system utilities.
We have also learned that processing-wise, games are expected to maintain at least 30 frames per second, regardless of how much CPU time is used by the OS. Specifically, there is a Sony technical requirement that states that titles cannot rely on the CPU processing speed. There is no explicit ceiling set on how much processing time the OS can use through its higher priority threads. Of course, Sony will make sure whatever is performed in the background will have very minimal impact on processing time, but the lack of an explicit cap concerns us.
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