Re: with two GTX 280 and a phyics card
The way Nvidia drivers work with SLI and identical cards and PhysX is.
1) SLI Enabled + PhysX enabled
First GPU does PhysX Workload + Rendering workload. Second GPU does all Rendering workload.
2) SLI Disabled
First GPU does rendering workload, Second GPU does physics workload.
If you were to add a 9800GTX to the mix.
You'd now have the option to set its own seperate PhysX device. Keep in mind this cannot be done with 3 identical cards due to the limitation of the driver currently. You will need an card with a different deviceID/type.
3) SLI cards do full rendering workload and 9800GTX does PhysX.
|CPU: Intel I7 Lynnfield @ 3.0 Ghz|Mobo:Asus P7P55 WS Supercomputer |Memory:8 Gigs DDR3 1333|Video:Geforce GTX 295 Quad SLI|Monitor:Samsung Syncmaster 1680x1080 3D Vision\/Olevia 27 Inch Widescreen HDTV 1920x1080
|CPU: AMD Phenom 9600 Black Edition @ 2.5 Ghz|Mobo:Asus M3n HT Deluxe Nforce 780A|Memory: 4 gigs DDR2 800| Video: Geforce GTX 280x2 SLI
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