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AMD for graphics, nVIDIA for physix?

avatar_raq

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Can anybody tell if an ATI 4890 can get along well with a GF 8800GT for physix? Will there be driver interference?
Did anyone try this?
Can this combination run on intel mobos? Or nForce mobos?
 

daedalus685

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Well, the 400 thousand posts about this over the last couple of days about how nvidia removed the possibility of doing this in thier new drivers might give it away...
 

smoggy12345

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To be honest i doubt physx will ever take off on a big scale, 'Havok' have a good physx engine that is used only on the CPU so their is no need for the GPU.

And using physX takes up a whole grpahx card so halves ur framerate.
 

darkvine

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In short what everyone is saying is it was possible but Nvidia shut it down quick with an update.

and while physX takes a card you can get an cheap 50-70 dollar card that will run it so that it doesn't mess with your frames.
 

darkvine

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No idea. I am passing on information based on hear say as I never tried it myself. Not sure if it was added to past drivers as well or which drivers have them myself.
 

avatar_raq

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I would buy a physics card, problem is it's not available in my country and I was planning to use my current main GPU (8800 GT) as a physics card for my next build.
One question though: will physics codes written for nvidia GPUs (in Mirror's Edge for example) run on the old Ageia physics card without a problem?
 

orangegator

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No, I did not. As was stated, Nvidia made it that with the newer drivers, starting with 186.xx, they disable physx if an ATI graphics card is also present.
 

daedalus685

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You can dedicate which card to use for physX in a situation where you are not using SLI, but the card is not entirely used by it. For instance, a single GPU set up can use physX just fine, compared to the graphics work load the physics computation is rather negligable, though there will be somewhat of a performance hit on some rigs.
 

avatar_raq

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The performance hit affects slower GPUs for 2 reasons:
1-With physix enabled there'll be more particles in the scene, i.e more pixels to draw in the early rendering stages.
2-Physix computing costs some GPU cycles, the number of which increases if the GPU is slow.
 

trkorecky

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Thanks NVIDIA, I'm so glad you can prevent me from using my dedicated PhysX card that I purchased before you owned the damn technology just because I have a 4870X2... And you actually expect this technology to go somewhere? Idiots...
 

smoggy12345

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Never actually thought about this... Surely they can't do that!!!!
 

OvrClkr

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Yes this can be achieved, contrary to what everyone is tellin you..... But you have a 50/50 chance of stability due to driver conflics....for the physics processor (9800), you can go to start/all programs/nvidia corp/physics properties and in there there is an option for g-force physics or ageia (enable). Make sure you have both drivers up to date and they have to be both legit from their respective websites, don't use any Beta drivers..... I have not tested this in Win 7, only in Vista and XP PRO...

 

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