I'm trying to build a budget gaming system. since I'm on a budget, I wanted to get a mobo with g-card in it so I can get a better g-card later, is this good mobo for that? also when I add another card does it have more performance?. thanx for any help.
Well, as I said, it's nice to have for troubleshooting purposes, but in this case, you will definitely want to go with a dedicated graphics card regardless of which motherboard you get. On-board chipsets are not intended to be used for gaming (other than winmine and solitaire).
Since gaming is your direction, dedicated graphics card is a must. The 770 board will pair nicley with the Phenom II X3/X4. Think Tom's actually did a review of the 770 where is was better than the 780 chip from a gaming performance perspective, but I notice you have stated the 785. The extra saving could go into a better video card.
Getting the board with the GPU won't hurt anything, they're just saying that you shouldn't expect to game using the on-board GPU. It's nice to have as a backup in case you have a problem with your dedicated GPU. On-board GPU's work fine for office type work and watching DVD's and TV, but they're not made for gaming.