Blaze Lord
13/Apr/06, 05:02 PM
The PS3 OS, like the 360's, is one that is constantly running, especially during games. But how much system resources does it use?
"- 64mb of the 256mb of available XDR memory off the Cell CPU
- 32mb of the 256mb of available GDDR3 memory off the RSX chip
- 1 SPE of 7 constantly reserved
- 1 SPE of 7 able to be "taken" by the OS at a moments notice (games have to give it up if requested)
In the case of the PS3 this equates to 14% of the available Cores on the CPU, 12.5% of the available RSX memory and 25% of XDR Cell memory. Balancing these out, one could argue that Sony has removed a total of 14% of the available CPU power and 18.75% of RAM for these features as well as others that are not mentioned here or will be added in future updates to the PS3 Operation System."
What about the 360?
" In the case of the Xbox 360, this cost is approximately 2% of total CPU time and 6.25% of the Xbox 360's total available RAM. "
And, the CPU figure is a little skewed. Both the 360 and the PS3 are multithreaded. The 360 OS uses 3% of 2 of the 3 cores. The first wave of games haven't even used multithreads, and were running, afaik, on just the one core. The core that the OS wasn't touching.
Of course, the PS3 is claiming to have one-to-many voice chat across all games (something the 360 refuses to have, even outside of games, 'due to bandwidth') and one-to-many video chat (something the 360 hasn't announced anything on).
http://www.ps3portal.com/ps3/article/352/1
"- 64mb of the 256mb of available XDR memory off the Cell CPU
- 32mb of the 256mb of available GDDR3 memory off the RSX chip
- 1 SPE of 7 constantly reserved
- 1 SPE of 7 able to be "taken" by the OS at a moments notice (games have to give it up if requested)
In the case of the PS3 this equates to 14% of the available Cores on the CPU, 12.5% of the available RSX memory and 25% of XDR Cell memory. Balancing these out, one could argue that Sony has removed a total of 14% of the available CPU power and 18.75% of RAM for these features as well as others that are not mentioned here or will be added in future updates to the PS3 Operation System."
What about the 360?
" In the case of the Xbox 360, this cost is approximately 2% of total CPU time and 6.25% of the Xbox 360's total available RAM. "
And, the CPU figure is a little skewed. Both the 360 and the PS3 are multithreaded. The 360 OS uses 3% of 2 of the 3 cores. The first wave of games haven't even used multithreads, and were running, afaik, on just the one core. The core that the OS wasn't touching.
Of course, the PS3 is claiming to have one-to-many voice chat across all games (something the 360 refuses to have, even outside of games, 'due to bandwidth') and one-to-many video chat (something the 360 hasn't announced anything on).
http://www.ps3portal.com/ps3/article/352/1