Different GPUs and using secondary GPU in After effects

[Daniel Bull]

Nope Didn’t work.

Ay other suggestions?

[Daniel Bull]

Hi Walter,

What about multiple GPUs?

As i understand it, one can stack GPUs up for Octane to use so long as they are the same card?

Would I be able to do this with a different secondary GPU from my main GPU? So that my setup could theoretically be:

Quadro 4000 (primary) GTX 980Ti (secondary) GTX 908Ti (tertiary) GTX 908Ti (etc…)

Of course I know i would have to get extra power supply installed to handle these extra GPUs – but is this possible? Is it advisable?

If this is the case, would you recommend getting one Titan X? Or two GTX 980Tis? Or even 4 GTX 750Tis with 4GB?

[Walter Soyka]

I’m pretty new to Octane myself and unfortunately I’m not sure I can help with this question.

Walter Soyka
Designer & Mad Scientist at Keen Live [link]
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
@keenlive   |   RenderBreak [blog]   |   Profile [LinkedIn]

[Daniel Bull]

I thought there were potential issues with using different GPUs for the same application, but these benchmarks are showing multiple different GPUs.

https://render.otoy.com/octanebench/results.php

Are these bridges GPUs, or just simply two GPUs assigned to Octane Render via the software controls? If this is the case, could I dedicate 2 (or more) GPUs to Octane, whilst keeping my primary GPU for all other applications? Ergo:

Quadro 4000 (primary GPU for most applications and display) Titan X (secondary GPU for Octane) GTX 750Ti (tertiary GPU for Octane)

Would this work? Would I need to somehow bridge the secondary and tertiary GPU? Or would Octane simply use the Titan X, then switch to the GTX 750Ti if and when it ran out of memory with the Titan?