This is not neccesary correct. If you are doing a clean installation, you can use either manufacturer driver or nVidia reference driver. If you have manufacturer driver installed then you should stick to manufacturer driver because, at least is confirmed on Asus A7N8X series that Asus have their driver tweaked. But if you have the nVidia reference driver installed, then you should always use the nVidia reference driver. This can reduce the problems you may have in the future.don't download the drivers from Nvidia but use the ones on the CD