The PS3 (and other consoles) handle their games so well because they are not running a full OS, and the games are hard-coded for their specific hardware and software.
If you took the hardware of a high-end PC, put a custom made OS in it that was for gaming only, then wrote games for that setup only, it would shred ANYTHING MS or Sony could come up with right now.
If you took the hardware of a high-end PC, put a custom made OS in it that was for gaming only, then wrote games for that setup only, it would shred ANYTHING MS or Sony could come up with right now.