getochkn :
Considering you are going to need a $300+ video card to MAX out those games, good luck on getting the rest of the system, OS, etc for $500 and not have it bottleneck the card you need.
People need to realized maxing a new game just released at 1080p and the words budget doing go hand in hand. You can get close to maxing them for $800, or spend more. As the other poster said though, you don't need 10543 threads on the same topic. Make one and stick to it.
Airm3n :
Well some people have preferences I just listed both.
I have no preference one way or the other, and typically my choices are solely based on money available, but the truth is, currently, bang for the buck wise, amd has the market cornered. Also, i wouldn't suggest sli nor cf for a base rig, spending what one can on the best single gpu you can afford is always the best option. As a possible future addon, sure, why not.