the discriminator for a final decision seems to be the amount of VRAM (3Gb effectively in the 780/790 line, 6Gb in the Titan line). Is anyone facing the limits of 3Gb VRAM using Poser / Octane and advocating 6Gb instead? As for the same amount of money I've got to trade VRAM vs CUDAS (performance), or: single Titan vs double 780 (or a 790).

I would say that over 99% of Poser scenes are going to fit in 3GB.  And those that don't, you can use the texture compression script supplied with the plugin to reduces the memory requirement.  3Gb is a massive amount of memory to fill with polygons and texturemaps.  The texturemaps slots would be a bigger limiting factor - but with the 600 series you get 144 RGB and 68 grayscale, which is a lot!

is the demo full functioning?

It is limited in resolution (1000 x 600 from memory), and you cannot save, which means no rendering animations too (since that involves saving each frame).  And you cannot access the material database.  But it still gives you an excellent idea of the capabilities of the plugin, and how well it will run on your card.  I've just packaged up the latest demo version, so email me at the address above and I will send you a pre-release.

Paul

Creator of PoserPhysics
Creator of OctaneRender for Poser
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