I just bought a pny made ti4400 on ebay for 56$. I am currently running a BBA 9600 non pro (128bit). I bought the card becuase I am in a Call of Duty clan and the 4400 really crushes my 9600 in that game.(+40% according to THG) This is probably a noob question but seeing as though the Ti is dx8.1 and I have dx9.0b installed is this gonna be a problem? Is it possible to revert back a version in DX or is it even necessary?