Use a magnifying glass and check the soldered components to see if any components may have become slighlty loose.On a next point to me only the corner of the pcb seems damaged, shouldn't be a major issue for the card. I assemble and take apart systems on my bed so there's little chance of components getting dropped.
any bruises or visible damage? what surface it fell on? and changes in temps? fan on vc still fully functional? if its playing games u should be fine.sincerly doubt you have anything to worry about. just keep testing it. if it was only 2 feet i really doubt any serious damage will occur.