Hi Guys, I am planning to build a Hybrid Physx setup, I have the following rig: 1. AMD fx-4100 2. MSI 890GXM-g65 3. XFX HD 7870 2 GB Dual Dissipation 4. 600 W cooler master elite power 5. 4 Gigs of Corsair RAM 1333 Mhz 6. I need an nVidia card and cant decide on what .. My queries: 1. My mobo runs the pci-e lanes at x8 / x8 if 2 cards are inserted. I cannot change my mobo, will there be any performance issues? 2. I cannot have the new card with external power from PSU. dont have more power room left, Either i will have to buy a molex to pcie power converter [if they are good and actually work] Please advice on how to proceed with this ..