I'd also like to know something about these drivers. Does it mean that the official drivers from nVIDIA's site do not work well with the ASUS boards?
What sort of differences are there that would require a separate driver package?
I'm about to make my decision about a new MB, and if the ASUS board does not work well with the regular drivers from nVIDIA I think I'll go for MSI instead. I don't really need onboard ethernet or sound since I have PCI cards for that, so in the case that the difference only affects that I would go for ASUS.