I have a Zotac GT 580 in my computer as a primary graphic card. I have a three monitor setup to get the wide screen view in the game. To get proper effects of PhysX, I installed Zotac GT 430 in my computer. I have been playing Mafia II on my computer and I think that having a dedicated graphic card for PhysX will take off the load from graphic card for this part. But the thing I am worried about is that Zotac GT430 and Zotac GT 580 are totally different graphic cards. So are there any chances of bottlenecks being created in performance of these graphic cads.
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