Emulator

You're right.Great response,anyway I know that this emu will become faster in future,however it will be harder for rpcs3 because only one person is working at it now.I didn't know about interpreter and recompiler.

It is at early stages, emu cores normally arent coded by large groups (partially because you have to be a little insane to do it :p) once it is working somewhat other devs will cheer up and come to work on stuff like sound, video, input etc. The core is a bit punk

Just one last example about what a recompiler can do: If I turn off the JIT on dolphin (GC and Wii emu) most games I could run at steady 60fps come down to 5-15fps. A recompiler can be very powerful for emulation, and it is interesting to notice how we've been able to run the Tetris homebrew on RPCS3's interpreter at somewhat playable speeds.

A proper JIT would give us dozens more fps. Of course the simplest ps3 game will be much, much heavier than that, not to mention we are still emulating mere fractions of the core, which should be much heavier when done, but this actually makes me feel more hopeful about where this is going.