I'm sure the sound quality between them would be hard to tell but which one offers better 3d position in games and better utilization from current games? and since the realtek is onboard, would that give a little performance boost over using a seperate pci card like the SB? if they're performance was about the same, i was thinking of selling it and reinvesting it into something else like, a stick of 256 DDR or a faster burner.