Your question is out of my league but ! Why do you need a raid card when new MB have 2 SATA3 contorller both capable of seperate raid and a SATA2 Controller with raid also? Sound is built in too, maybe you need that for recording. Your answer may help me even if this does not help you. I have AutoCad, wish I had Inventor.
I'll bet not engough SATA ports with only two per controller.