I could be wrong, but to me "optimised BIOS for nvidia cards" sounds like something the folks in Asrock's marketing dept would come up with. It is realistic to say that nVidia chipsets are optimised for nvidia cards in comparison to ATI cards, but to say that a BIOS plays such a big deal sounds like pushing the limits.ASrock on the other hand is regularly giving out specific optimised BIOS for nvidia cards for this board
This is turning into an unending debate over Asrock products. Like I said before, Asrock hasnt left a mark in the motherboard world as a maker of "quality" products. I have personally seen friends having weird problems with their systems, only to open up and discover there's an Asrock/Mercury etc under the hood.