The latest onboard sound is Realtek 1220 or some variation. It's supposed to be pretty good but I'm personally having problems with static / cross-talk on my Taichi - same case and same parts as my previous x99 build - which had no problems at all. Thought it might be a bad board so bought another one from a different vendor and both seem to have it. Not sure if it's so new that the drivers aren't mature or what but YMMV.