My current gfx card is radeon hd 7950, And I'm looking at a near future upgrade, so I just wanted to know if its worth upgrading my card or put that money in a more ram, new Cpu etc.
You really do not need to upgrade.. But if you HAVE to, why not just add another hd 7950 to your rig?
Usually a single card setup is better that double cards, however, there is no single card that will match two hd 7950's..