I'm looking to build this computer a little future proofed, so I don't have to update components for a little while... If I'm operating two 580s in SLI on my upcoming build, would I see any increase in performance or eye-candy from getting a 3rd, lesser, card as a dedicated PhysX card? Would it detrimentally interfere with the number of PCIe lanes on the board (happens to be an ASUS P8P67 WS REVOLUTION with NVIDIA NF200 for enabling dual 16x) so much as to cause more harm than good?
If it would be beneficial, what kind of card would you recommend?
I appreciate any advice you can offer!
DO NOT get a dedicated PhysX card! It will bottleneck your setup. Your system will run faster if you let the gtx 580's handle the PhysX. The only way to prevent the bottleneck, would be to use a high-end card, or another 580, dedicated to doing just PhysX. That would be overkill, and you'll be throwing away money. Don't listen to guys that say just throw ANY card in to handle PhysX. While it would work in low-end setup, you wouldn't want to do it in a high-end setup. Here's a link to a vid showing what I'm talking about...http://www.youtube.com/watch?v=cbww3dhzK0M&feature=BFp&list=WL73C03D61B7D5D4E4&index=18