Why don't you actually check the bios, insted of checking the specs on the site...anyway try getting hold of the 80 series drivers. Think it's just a software/driver error anyway, don't worry too much as long as the temps and fps are good enough
I used to get the card not working in Sli mode message everytime when windows started with the 91.xx series drivers even though my board is non sli, no such message with the 84 series and 92 series .