I ended up getting a 780, I think that should be more than enough!!
I have an EVGA 680 w/ 2GB of RAM. Newegg today has 660s for $150. Would a 660 2GB be overkill?
Looking to improve my BF4 experiance
physx is the physics engine for modern UE 3 games but only a handful of those games offer optional hardware effects.Just about any Unreal Engine game uses PhysX. Is a PhysX card necessary? No. It usually has nicer visuals with the PhysX cards though like clothes that flap in the wind, fog effects, etc. If you like these nice touches the PhysX is more then justifiable. A lot of people just get caught up in the FPS the card produces instead of what is actually being put on the screen. This is coming from a Radeon guy.