Hellfire13 :
Nope. There are standard technical architectures for each(gpu/chipset) and they are not relevant to brand coherence. Asus/Gigabyte/MSI does not add anything extra on their card to work better with their board or vice versa.
That doesn't matter, if your using integrated graphics made by AMD and put in an NVidia card, or the other way around, the dedicated card just takes over control.