It can currently boot over 99% of the PS3 library, with a huge portion of those games being "Playable" from start to finish.
A 32-bit Windows operating system can only address a maximum of 4GB of RAM . The PS3's architecture and the overhead required to translate its "Cell Broadband Engine" to a PC require significantly more memory to run smoothly. ps3 emulator pc 32 bit
To put it simply: