SLI? GPU Question

[Todd Kopriva]

> “So Im assuming No for Ray-tracing Yey for Open GL?”

That sentence shows a couple of misunderstandings.

First, the GPU acceleration of the ray-traced 3D renderer in After Effects has nothing at all to do with OpenGL. It depends on CUDA. OpenGL and CUDA are two extremely different GPU technologies, for very different things.

Second, the absence of a card on our list of tested and supported cards means just that: the card isn’t tested and supported.

Read these two pages carefully:

https://blogs.adobe.com/aftereffects/2013/09/gpu-changes-for-cuda-and-opengl-in-after-effects-cc-12-1.html

https://blogs.adobe.com/aftereffects/2012/05/gpu-cuda-opengl-features-in-after-effects-cs6.html

There’s also an explicit answer there to your question about multiple GPUs. (summary: yes)

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Todd Kopriva, Adobe Systems Incorporated
After Effects quality engineering
After Effects team blog
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[Adam Lewen]

Thank you Todd for the informative reply!
I will read the links.
Have a great weekend.

[Brad Magnus]

Hi Todd,

I know you answer alot of questions about GPU and Ray Traced 3D. I looked over these links and I don’t see the answer to my specific question. If I have two GPU’s (GeForce GTX 760’s), is it better to run them SLI or just have both installed? If it’s not SLI will After Effects, Premiere, and Media Encoder put the second card to use during rendering? And lastly, is the second card only used during rendering, with no playback improvement or RAM preview improvement?

Oh, and I’m not really using the Raytraced render engine, so if I’m not is there really any benefit to having the second card?

Thanks!