Joey Makoto :
bignastyid :
Sli requires atleast an 8x slot. If the board only has a 16 and 4x slot then it probably doesn't support SLI. To confirm what's the make and model of the motherboard.
heres a print screen
No your not doing SLI, the second card is acting as a Physx dedicated card. SLI is when both card shared the load, and in this case its not doing that.