Thread: GTX 470 Sli
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Old 04-14-10, 06:53 PM   #15
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Default Re: GTX 470 Sli

Originally Posted by brunner View Post
Do Nvidia drivers now let the user allocate 2 GPUs to rendering graphics and 1 to PhysX? The main reason why I never went with triple-sli is that the NV drivers wouldn't let the user dedicate one of the 3 cards to Physx. It's why I went with 2x280GTX or 2x295 + 1 9800GT for Physx instead. In Physx games, 2 GPUs in SLI plus one for PhysX is always faster than 3 GPUs in SLI (assuming they're from the same class).

I think that's why Just Cause 2's performance is somewhat disappointing even on a 480GTX. The developer's choice to use CUDA instead of Physx meant that the water effects can't be offloaded to a GPU that was just dedicated to physics calculations.
Not if your at higher resoultions with alot of everything on higher settings, three is better than two.
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