Its seems that i have no option , other to buy a sound card.
But since Gigabyte put the PCI slots next to PCI-Ex 16 - 1 and PCi ex 16x- 2, i cant use them because of my SLI.
I cant use the PCI ex 16 -3 (actually at 8x speed) because gigabyte put it too low and my video card wont fit the case (have no problem with my past evga 780i MB). and maybe if has a space, i think my IDE harddrive cable wont let the card fit.
I have to go for the expensive PCI-ex sound cards.
GB lost a lot of points to me.