How to setup a video card as a dedicated PhysX card

Hello, I just got a GTX680 to replace my GTX 560 ti 448 cores video card and I was wondering if it would be a good idea to setup the 448 cores gpu as a dedicated PhysX card and if so how do you do that?
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  1. Yes you should, and you plug it into one of your other pcie slots ,but make sure your psu can handle it i recomend at least a 1000 watt for a 680 and additional card upto another 680.. three 680s you may need 1200 wattthe 680 should go in the top slot btw...
  2. I wouldn't do it, unless you have a motherboard that supports x16/x16 dual pci lanes. If not, both cards will work at PCIe 2.0 x8, and GTX 680 might get bottlenecked.
  3. Just plug the older card into one of the lower PCIe slots. When you boot, windows will install it with the same driver as the 680.
    Right click on the desktop and open the nvidia control panel.
    Under 3d Settings click on SLI physx tab.
    In the physx pull down menu change it fron auto or CPU to the 560.
    Hit apply and you are good to go.
  4. Hmm I guess I wont do it. I could use the money anyway since my 448 cores is in great condition. I was more of just curious I guess. I'm sure if I play a game with PhysX the single GTX680 will handle it fine. And to the first post no way am I spending money on a 1000watt psu at this time, I just got a 680 lol :D My 650watt psu is more than enough to handle the gtx680 and my 4.5ghz overclocked i5 2500k. But I know having a little more would be nice. I would love to get an 850watt psu in the future.
  5. If you did add a dedicated PhysX card, you would put it in the x4 PCIe slot to maintain the full x16 capability of your primary graphics card. x4 is plenty of bandwidth for a dedicated PhysX card.

    A GTX 560 Ti will give you a boost in PhysX games, but probably is not enough to make it worth it.

  6. Alright. Oh and just so people know. My mobo is PCIe 3.0 and both slots will run at 16x
  7. The rumor mill often reported that the GTX 680 was going to have some new dedicated PhysX circuitry. Since the release of the cards I haven't heard anything else about it.
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