No, my profile is up to date BUT I can also see mem timings on a P4/Intel MoBo/Crucial box, and a Athlon/EPoX MoBo/Kingmax box using cpu-z, so I don't think it's too finicky. Maybe it's your SIS chip that doesnt go down well with cpu-z? It doesn't seem to mind Intel or AMD/Via though.
BTW: My own RAM is Corsair but it's using Samsung chips, FWIW.
Don't have any other suggestions. It's not easy finding an app that accurately shows memory timings. Sandra seems OK with frequency, but not CAS settings....