Well, it's really going to come down to trial and error, jcool. While nVidia's Performance Tools or whatever do seem to work on this chipset, it's far from perfect. You have a better chance than I since you're using Tyan gear, however. On my Supermicro, once the nVidia crap has been installed I get fun system behaviors like hard lockup when a new user profile is created (ie: first time a user account logs in after the software is installed if they hadn't logged in already). It also has a tendency to lock up for no good reason like if one clicks on the performance profile tab. Ultimately, it should work though. You'll just have to tip toe through it when using it.

You also have the possibility of editing addresses via SMBus directly, which has come in handy for me for things like NB multiplier. Don't worry, we'll get you figured out.