Not to mention the PS3 hardware architecture is much more complex than psp's, which makes it even harder to develop an emulator and fix problems, so it takes more time to evolve.
My Rig:
OS: Windows 7 Professional 64bit SP1
CPU: AMD Phenom II X4 955 3.2 GHz Stock
Graphics Card: Nvidia GeForce GTX 560 1GB GDDR5
Motherboard: Gigabyte GA-870A-USB3 AM3+ Revision
RAM: Geil 4GB Dual Channel @ 1600Mhz