I found an article on tomshardware dated from 2003, so I don't know if it's still accurate anymore. It said that built-in sound can slow down games because it's using the MB CPU, and benchmarks with add-in sound cards showed the add-in cards were slightly faster. I have a new asus p4p800-deluxe with an 8-channel ALC850 chip built in, and an older audigy 1 sound card. Should I bother to use the audigy? thanks.