Possible to have a ATI as the main card and Nvidia for physX?

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hofuldig

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#1 hofuldig
Member since 2004 • 5126 Posts

Well i remember a long time ago i installed like 3 Graphics cards in my pc 2 of witch were Nvidia and 1 was ATI There was A TUN of conflicts but eventually it started working without problems.

so i am thinking now i have an ATI HD 4870. if i were to ADD a 9800GT for PhysX (with Drivers) do you think it would allow me to enable PhysX in game?

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DGFreak

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#2 DGFreak
Member since 2003 • 2234 Posts
You cannot link different GPUs, especially when they aren't even from the same GPU manufactuerer.
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kodex1717

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#3 kodex1717
Member since 2005 • 5925 Posts
Yes, that would work just fine, but it would be overkill. Just get a 9400GT and use that as a PhysX slave, because it has plenty of power to handle the load. Also, if you have any newer ATi cards around, there are PhysX drivers out there for them, too. And, believe it or not, Nvidia helped to create them. :o EDIT: He's not trying to "link" his GPU's, he just wants them to run code under CUDA, which they can do no problem. Just remember that you have to use XP drivers in SP2 compatibilty mode if you're on Vista, because the cards would be from different vendors.
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DGFreak

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#4 DGFreak
Member since 2003 • 2234 Posts
Yes, that would work just fine, but it would be overkill. Just get a 9400GT and use that as a PhysX slave, because it has plenty of power to handle the load. Also, if you have any newer ATi cards around, there are PhysX drivers out there for them, too. And, believe it or not, Nvidia helped to create them. :okodex1717
Are you sure about this? I'm fairly certain that this is not doable with the currently-available drivers. I think he would need a dedicated PhysX card to do what he is describing.
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kodex1717

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#5 kodex1717
Member since 2005 • 5925 Posts
Yes, I'm sure. I'm running such a setup as I type here.
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RayvinAzn

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#6 RayvinAzn
Member since 2004 • 12552 Posts
Yes, I'm sure. I'm running such a setup as I type here.kodex1717
How did you get it working if you don't mind me asking? I might consider such a setup myself sometime in the future, since I have a 9800GT already that could be put to good PhysX use. Did you just install the ATI drivers and then pick up just the PhysX package?
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machiavell8x8

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#7 machiavell8x8
Member since 2008 • 1399 Posts
im not sure why anyone would want physx right now in the first place, there's only one good game that uses it. if better games start using it then upgrade to it then.
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kodex1717

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#8 kodex1717
Member since 2005 • 5925 Posts
How did you get it working if you don't mind me asking? I might consider such a setup myself sometime in the future, since I have a 9800GT already that could be put to good PhysX use. Did you just install the ATI drivers and then pick up just the PhysX package?RayvinAzn
After checking myself, I'm not actually running a PhysX-capable card (4850 & 7300GS), though I did try it a few months ago. As I recall I tried both the full drivers and the CUDA package for Nvidia, but I don't remember which worked. The PhysX control panel told me that I had no physics accerators, but I was was running scenes smoothly that would have otherwise killed my CPU, so I believe it worked.
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cpdowling

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#9 cpdowling
Member since 2007 • 87 Posts

The 4870 is just fine for physics calculations, unless you already have the 9800gt forget it

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joshuahaveron

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#10 joshuahaveron
Member since 2004 • 2165 Posts

[QUOTE="RayvinAzn"]How did you get it working if you don't mind me asking? I might consider such a setup myself sometime in the future, since I have a 9800GT already that could be put to good PhysX use. Did you just install the ATI drivers and then pick up just the PhysX package?kodex1717
After checking myself, I'm not actually running a PhysX-capable card (4850 & 7300GS), though I did try it a few months ago. As I recall I tried both the full drivers and the CUDA package for Nvidia, but I don't remember which worked. The PhysX control panel told me that I had no physics accerators, but I was was running scenes smoothly that would have otherwise killed my CPU, so I believe it worked.

So do you just install the nvidia physx only drivers and it works?

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kodex1717

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#11 kodex1717
Member since 2005 • 5925 Posts
So do you just install the nvidia physx only drivers and it works?joshuahaveron
For the most part, yes. Just remember to use XP drivers in SP2 compatibilty mode if you have Vista; the WWDM standard doesn't allow for graphics cards fromdifferent vendors.
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Rhamsus

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#12 Rhamsus
Member since 2007 • 1078 Posts
im not sure why anyone would want physx right now in the first place, there's only one good game that uses it. if better games start using it then upgrade to it then.machiavell8x8
perhaps because people have those games? (UT and Mirror's Edge)
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codezer0

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#13 codezer0
Member since 2004 • 15898 Posts
im not sure why anyone would want physx right now in the first place, there's only one good game that uses it. if better games start using it then upgrade to it then.machiavell8x8
It's the only physics engine that can be accelerated by hardware at all; HavoK FX isn't happening, especially now that intel bought the company. And until someone else can make a better physics engine that can be accelerated with either dedicated hardware or some-similar, PhysX is it.
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machiavell8x8

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#14 machiavell8x8
Member since 2008 • 1399 Posts
nvidia knows physx is going down the drain, but they also know its a good hype train till it does. it also serves as a plateform to opencl "On 10th December 2008, both AMD and NVIDIA demonstrated the world's first public OpenCL demo, they shared a 75 minute presentation at Siggraph Asia 2008. AMD showed a sample on CPU accelerated OpenCL demo explaining the scalability of OpenCL on one or more cores while NVIDIA showed a sample on GPU accelerated demo.[11][12] On 26th March 2009 at GDC 2009, AMD and Havok demonstrated the first working implementation for OpenCL accelerating Havok Cloth on AMD Radeon HD 4000 series GPU.[13] " so no it doesn't look like havok is going anywhere anytime soon
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codezer0

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#15 codezer0
Member since 2004 • 15898 Posts
Never said HavoK was going anywhere; only that it likely won't be hardware accelerated in any way, shape, or form.
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machiavell8x8

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#16 machiavell8x8
Member since 2008 • 1399 Posts
well the way im reading that quote above, amd/ati used opencl to accelerate havok with their GPU, so unless im reading that wrong somehow they can indeed accelerate with hardware.