Would it be beneficial for me to continue to use my 470 gtx and my main video card but use a 260 gtx for physX? Or should I just not use the 260 at all?
If it is possible I do not see why not, of course, it is only going to help in games that use PhysX. I kind of think of it as a cheap and much more varied type of SLI, but as I stated can only be used for certain games. Just make sure your PSU is good enough, I don't see it posted in your specs.