I just upgraded my PC. I'm running a i7-6700 on a Asus Maximus VIII - Hero with 32GB and a 1060 GPU. My old rig had 2 560s in SLI. I'm wondering if I should use one of my old 560s to process PhysX? I know that there is a system of checks and balances and my concern is that the card itself might drain resources, slowing the rig as a whole.