I recently built a new PC based on the HD6870 card. I have an eVGA 9800GTX+ from my old build, just gathering dust. Would it be worthwhile to install it with my 6870 and do the hack to enable Physx, or is that more trouble than it is worth?
I don't know if it's worth the trouble, but if it was me I might do it simply because it was there assuming a good PSU and good case temperatures. I say go for it, try a few games with PhysX, and then decide if you want to keep it in there ^_^