If you're looking to upgrade your onboard sound (and you should), the
DIAMOND Xtreme Sound 7.1 is an option worthy of consideration. Find
out how it compares to Realtek onboard sound, and an Asus Xonar
Phoebus soundcard that uses a similar chipset.
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips