Ati + Nvidia For Physics

[SuperEmotastix]

I recently upgraded my graphics card to a Sapphire 4890 OC, just wondering is it possible to use my old EVGA 8800GT card just for physics in games like mirror's edge. So have the ati card for rendering graphics and the nvidia card doing gpu accelerated physics? I'm using Win 7 RTM x64

 

[mickey megabyte]

i really don't think you can. it seems too hairy to even contemplate. your cpu should be able to handle the physx.

but please correct me, somebody, if i'm wrong.

 

[SuperEmotastix]

I think I read somewhere that with nvidia's new drivers as soon as it detects a non-nvidia gpu it disables physics, but supposedly it works with the old drivers. I've seen a few videos on youtube of it working on windows 7, so i'm not really sure if I should give it a try. Don't really want to ditch my 8800GT just yet.

 

[KazeNoKoe23]

I don't think an 8800GT + PhysX is going to provide ANY sort of visual/performance advantage that you would be missing with an OC'd 4890.

That said, I still don't believe it's possible to use ATI and nVidia cards simultaneously like that.

 

[Steve123MC]

Apparently you can.
Hope this helps ATI + Nvidia for physx? YES! - [H]ard|Forum

 

[mickey megabyte]

i stand corrected, well done steve. not the sort of thing i would try myself though...*shudders*

 

[stormy13]

but please correct me, somebody, if i'm wrong.

OK you're wrong.

Yes it can be done (only in XP and 7, won't work in Vista), and as SuperEmotastix said Nvidia has made a change in the latest drivers that if a card other than Nvidia is detected it will disable Physx,

PhysX won't work with ati anymore - Rage3D Discussion Area

 

[KazeNoKoe23]

Apparently you can.
Hope this helps ATI + Nvidia for physx? YES! - [H]ard|Forum

I stand corrected. This is interesting.

 

[SuperEmotastix]

I think I might give this a try like right now, lol. If I were which driver set should I use, could I use a older driver set then just update the physics software? My 4890 Is connected using the dvi cable, so I guess i'll just use the vga cable to connect my 8800GT?

 

[mickey megabyte]

don't ask me *shudders uncontrollably*

good luck!

 

[Steve123MC]

I did a little research on those forums and it looks like you'll have to use some old drivers 182.xx(they are working on some modded drivers)
have a look here Nvidia disables PhysX when ATI card is present - Page 10 this seems like a active thread.

Good luck!

 

[SuperEmotastix]

I think I got it to work almost perfect If I select display 1, it uses the 4890, fluidmark (physx benchmark) only got a score around 1800. If I extend the display's it uses both cards and fluidmark got a score of 7719. Only one minor problem, I don't have 2 monitors so when I select extend display's I can drag a program or the mouse off the screen, so what I done is drag the #2 display to the bottom right corner of #1 display, that way the only way to move the mouse off the screen is in the bottom right corner which is almost perfect.

 

[SuperEmotastix]

What's everybody's FluidMark Score?

 

[holo88]

probably the same as my credit score ....23 :roflmao:

 

[mckillwashere]

At one point in time PhysX was its own company with its own PCI card. About 2 years ago Nvidia bought them out, to me a kinda cheap move. But it made it cheaper to purchase those PCI chips. They were about $99.99. Then when nvidia bout them out they started building them into there graphics cards.

So theoretically, they functioned as a stand alone once why cant they now just under a second graphics card?

 

[stormy13]

So theoretically, they functioned as a stand alone once why cant they now just under a second graphics card?

Because Nvidia is having a pout, and like a little kid taking their ball and going home. Wonder if it has anything to do with the fact that ATI is going to have DX11 parts out several months before Nvidia does.

 

[smarteyeball]

Nvidia claim it's because it makes driver support more difficult.

I say it's a poor marketing and developmental decision with a hint of sour grapes.