jay_nar2012 :
Yea i was thinking about that but the HD3000's sound capabilities aren't ever used as manufacturers put another sound chip on the mobo (Realtek most of the time).
The reason motherboard manufacturers put sound chips on motherboards is because people are not interested in running a HDMI or DP cable from IGP to HDMI/DP AV receiver just for sound in a typical desktop setup on top of the cable from GPU card to display... or running analog cables from the display to the AV receiver.
In a living room environment with AV receiver or direct-to-TV connection scenario though (as appears to be the OP's case), it makes perfect sense since it eliminates cable clutter and analog audio between the PC and receiver/TV.