No, not even close. Just for starters, you have a quad core CPU, the PS3 has a 7 core CPU, so that right there would be a problem. Each of those cores runs at 3.2GHz, whereas yours run at 2.5GHz. These are some pretty fatal flaws, and we haven't even gotten to the significant overhead that comes from CPU instruction emulation, the need for a bluray drive or at least enough disk space to be able to handle 20-50GB/game.
Last I checked, PlayStation 1 emulators were still far from perfected, and computers were just starting to get powerful enough to make PS2 emulation a possibility. So we're probably a good 3-5 years from even basic PS3 emulation.