Really? That's great, maybe I'll upgrade my quad to the 6 core (1065T or 1090T I think is what it's model is) for my personal christmas present to myself if it will help Civ 5.
I dont' have any other games that take advantage of multiple cores, Civ will be the first to utlize more than one core, although having a quad core for the way that I use a computer has been great since I'm a very sloppy computer user and multitasking is my 2nd name, I often drive my wife nuts with how many programs I have open at one time and moving back and forth between them on a constant basis, she can't figure out how I manage to keep it all going in my old brain.