Are you talking about sound quality or overall effectiveness of the on-board sound?
Although I haven't used that board I would still opt for a stand alone sound card. They are not very expensive. On board sound takes up resources from the rest of the system. The last time I did a test between onboard sound and an add in card I noticed a very significant increase in performance, although it was on an older system. Since that time and with the relatively low cost of a mid range sound card I've never even thought about using onboard sound since.