hello,
in general you can use official drivers by nvidia as well as the drivers provided by asus.
there is no exclusion of supported drivers and/or grafic-cards manufactured by asus, when you use the original driver made by nvidia.
there is nothing like the sony-thing with asus.
one little exception is here as well : sometimes the original drivers don't work at first install. then you need the (older) driver provided by asus, than after installation and a reboot you can install the original nvidia driver. then he updates all necessary files, software and drivers automatically.
hope this helps you figure out your problem...
best regards nayss