Re: Video and sound card compatibility
Anything that's a PCI Express video card will work, as will most discreet sound cards. Some of those sound cards aren't much better quality (Audio-wise) compared to the onboard, so pick carefully. Discreet sound cards are useful, even if you get a lower priced one, because of the isolation that an expansion card provides over the onboard audio. You'll typically get less electrical noise with an add-in sound card than you would with the onboard.