Hey guys, I have been pondering upgrading my current system. Which is a phenom ii x6 1100t with a msi 785gt-e86 mother board and 6850 graphics card. I have been thinking about going with a i5 2400 and keeping my 6850. How much of an improvement would I see in gaming? And as far as a mother board goes if someone could suggest one under 100 dollars that would be great.