I have 2 gtx 670's SLI - Can I add a quadro just for dedicated physyx?

therabidwookiee · Jun 3, 2013

I have two Geforce GTX 670 4Gig SLI, and someone just up and handed me a couple of Nvidia Quadro cards one of them being an FX 4800. I was wondering If I could install one of these in my 3rd slot and just run it as a dedicated physx (not sli-ing it with the other two cards) so as to take more load off of my GPU's and the CPU. Would this work since the 670's are Geforce and the FX 4800 is a Quadro?

By the way ...i am a heavy PC gamer

derekullo · Jun 3, 2013

I don't think so.

Without the link in scalable link interface the cards wouldn't be able to communicate with each other to share the workload.

Edit: You can't SLI 2 different cards together much less 2 cards from 2 different families.

techgeek · Jun 3, 2013

You can use a dedicated nVidia GPU and if doesn't have to be one of your 670's. However I'm not sure that it can be a Quadro. The Quadro is a professional card and although it's supported with DirectX and OpenGL in it's drivers, I don't think it's supported by the Physx API. I could be wrong. Now you could have any other nVidia card right down to the 8000 series and it would work. So for instance you could have an old 400 series card and from the nVidia control panel, you could select that card for Physx.

Edit: I just found this

http://www.overclock.net/t/589202/faq-physx

It looks like Quadro does support Physx. However your setup should be powerful enough to perform Physx calculations and render frames at the same time. I guess that is depending on what resolution you are playing at and with how many monitors.

17seconds · Jun 3, 2013

It should work, but really the best way to find out is to plug it in and try it.

First question though, What PhysX games do you intend to play?

Mousemonkey · Jun 3, 2013

derekullo :

A dedicated PhysX card does not need to be SLi'd and if you read the OP properly you would see that there no mention of SLi'ing different cards.

derekullo · Jun 4, 2013

Sorry I did misread it.

Your quadro should be able to do it.

The Quadro FX 4800 isn't very good at gaming since it isn't a gaming card.

http://www.videocardbenchmark.net/gpu.php?gpu=Quadro+FX+4800

You may hurt your fps more than help getting it involved.

But you can try like the previous poster mentioned.

17seconds · Jun 4, 2013

Just to be clear, PhysX calculations have nothing to do with graphics performance. It is the CUDA computational abilities that matter most in a dedicated PhysX card. A Quadro card might just make a really good PhysX card.

Of course, none of this matters if you don't actually play any GPU-accelerated PhysX games.

derekullo · Jun 4, 2013

Equally important are the drivers for the Quadro card which may not deliver the performance desired.

jthmfreak · Oct 16, 2013

I'm running ski 670 ftws at 680 clocks with a gtx 275 oc'ed to the max for physx and the difference is negligible. A difference of maybe 2 fps on the metro 2033 benchmark.

17seconds · Oct 16, 2013

Metro 2033 is PhysX lite. Not very many PhysX effects and relatively low performance impact. Try Metro Last Light, Batman, or Borderlands 2.

RobCrezz · Oct 16, 2013

Dont bother.

The problem isnt that its a quadro, the problem is that its an old card and there would be no performance benefit. It has roughly the same power as a Geforce GTX 260.

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