I've got a pair of DELL P2314T's on my new Win 8.1 setup, so not directly equivalent, but similar.
I did install the DELL drivers whilst trying to get both touch-screens working properly. I'm not sure whether it was absolutely essential, because in the end I found that the touch-screens were sensitive to which USB ports they were connected to, and then didn't un-install the drivers once I'd got a working system (if it ain't broke, etc...!)
Mike.