SLI and Physx problem

[rydehard]

I've got an EVGA 790i Ultra SLI Mobo. The problem I'm having is: I have 2 9800 gt's running in SLI and 1 8800 gt that I want to use for physx. I have the latest drivers and the latest version of NVidia control panel. I can enable SLI through the control panel, but the cards don't actually go into SLI. Another problem is that I can't adjust the fan settings through the GPU settings tab.

Is this a drivers issue?

 

[dagger]

I've got an EVGA 790i Ultra SLI Mobo. The problem I'm having is: I have 2 9800 gt's running in SLI and 1 8800 gt that I want to use for physx. I have the latest drivers and the latest version of NVidia control panel. I can enable SLI through the control panel, but the cards don't actually go into SLI. Another problem is that I can't adjust the fan settings through the GPU settings tab.

Is this a drivers issue?

Driver issue. You cannot dedicate one card to physx while in sli mode. 180s drivers is supposed to enable it, although I haven't tried.
http://downloads.guru3d.com/GeForce-Forceware-180.43-Vista-64-bit-download-2109.html