QUOTE (Shoma @ Feb 9 2008, 12:41 AM)

I thought it didnt matter what cpu i had, the emu just couldnt emulate it quick enough.
That was true in the past, but PCSX2 has improved by leaps and bounds since then. AFAIK, PCSX2 has had dual core optimizations for a while now. I can't tell you what speeds you'll get, as I am not interested in PS2 emulation nor is my computer even in the same ballpark as yours (needless to say, things go slow on my end, and I don't have a multi-core system to begin with).
Sure, 2D games will run faster than 3D ones, in general.