Quote Originally Posted by Lucifer View Post
Sorry but you're wrong.
Phenom 2 is garbage compared to the i5.
I upgraded not too long ago myself and now I can safely say that the i5 2500 is a monster.
You totally didn't get the topic it seems. The op is looking for a way to make the game run smoother on his machine and a new CPU won't help at all. And I doubt you switched from Phenom II to i5 as the difference in games is almost none(I have both in my house with the same GPUs).
About SLI/Crossfire: causes too much trouble, never scales well, almost never works in windowed mode, requires a strong PSU and produces too much heat for normal gamers. Better go with a single card if you're not sure about it.