shigure, there is no PS3 emulator, nor is there a PS2 emulator that works to an acceptable level.
Plus, if you would simply read you would see that Gorilla said "disc".
A good rule of thumb for emulation is the CPU of the console times 100. So, to appreciably emulate SNES games you need a 350mhz proc in your PC. The PS3 runs at 3.2 ghz. Good luck.