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AMD for graphics, nVIDIA for physix?

Last response: in Graphics & Displays
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August 12, 2009 4:16:38 PM

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?
August 12, 2009 4:31:55 PM

What? I'm serious..Is it possible?
August 12, 2009 4:32:40 PM

What? Are you saying it's not possible? Why?
I'm serious BTW..
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a b U Graphics card
August 12, 2009 4:36:25 PM

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...
August 12, 2009 7:39:48 PM

damm you nvidia
August 12, 2009 7:47:08 PM

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.
a b U Graphics card
August 12, 2009 7:52:41 PM

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.
August 12, 2009 7:55:25 PM

Are you saying it was possible in the previous drivers? What drivers? I'm ready to roll back..
a b U Graphics card
August 12, 2009 7:55:50 PM

smoggy12345 said:
And using physX takes up a whole grpahx card so halves ur framerate.


That is not at all how it works...
a b U Graphics card
August 12, 2009 7:57:24 PM

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.
August 12, 2009 8:08:04 PM

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?
a b U Graphics card
August 12, 2009 8:13:26 PM

It is possible to do, but can be a little tricky. I've done it. Read this thread for all the info you'll need. http://tinyurl.com/q9b3sg
August 12, 2009 8:39:15 PM

Thanks orangegator.
August 12, 2009 8:40:13 PM

daedalus685 said:
That is not at all how it works...


Thats what happened on the UT3 physx demo??? Used one card for physx and one for rendering????
August 12, 2009 8:50:11 PM

Orangegator,Did you try it with the 190.xx drivers?
August 12, 2009 8:55:54 PM

^ IIRC they've disabled it since the 180 drivers, although it might be 190.
a b U Graphics card
August 12, 2009 8:57:11 PM

avatar_raq said:
Orangegator,Did you try it with the 190.xx drivers?


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.
a b U Graphics card
August 12, 2009 8:57:30 PM

smoggy12345 said:
Thats what happened on the UT3 physx demo??? Used one card for physx and one for rendering????

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.
a b U Graphics card
August 12, 2009 9:07:18 PM

yeah but the hit would be 5-8 frames at worse. Unless you have some really weird factor going on.
August 12, 2009 9:14:06 PM

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.
August 12, 2009 11:06:51 PM

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...
August 12, 2009 11:20:54 PM

trkorecky said:
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...


Never actually thought about this... Surely they can't do that!!!!
a c 273 U Graphics card
a b À AMD
a c 172 Î Nvidia
August 13, 2009 12:21:28 AM

trkorecky said:
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...

Have you tried the standalone driver? http://www.nvidia.com/object/physx_9.09.0428_whql.html
a b U Graphics card
August 13, 2009 12:45:35 AM

avatar_raq said:
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?



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...

a b U Graphics card
August 13, 2009 1:17:42 AM

On older drivers, itll work. New ones, no. Support has ended, and wont improve
a b U Graphics card
August 13, 2009 1:23:50 AM

OvrClkr said:
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...



Won't work if you have the newest drivers. Nvidia has it set up now that it won't even allow physX to appear in the menu if there is another card that isn't Nvidia installed.
a b U Graphics card
August 13, 2009 1:27:53 AM

Well it worked for me a couple of months a ago with the Nvidia 178.24 drivers...didnt know they dropped the support.... :o 
a b U Graphics card
August 13, 2009 1:33:57 AM

OvrClkr said:
Well it worked for me a couple of months a ago with the Nvidia 178.24 drivers...didnt know they dropped the support.... :o 


They did, was all the rage in the news last few days :p 
a b U Graphics card
August 13, 2009 1:34:38 AM

Ya know, its supposed to be open, and non proprietary, this kind of action flies in the face of that.
I can understand there maybe problems, as oc said, achieving a workable solution, but owners of ATI products I think would rather find those workarounds, and put up with those problems than have nVidia cut of support for this supposedly "open" ability
August 13, 2009 11:12:44 AM

I totally agree..But no problem, I keep the older versions of forceware, so I'm gonna use them, and try to have the best in the two worlds, Physix and DX 10.1 ! Thanks guys.
When I started this thread I wasn't sure this is even possible, and I was surprised everyone is talking about it and how nvidia disabled it in the new drivers..Idiots indeed. They could've increased their market share and upped the demand for their slower GPUs..
!