Quote - > Quote - Paul, it is not just "very large scenes". If you take a default V4 figure it already takes 8 RGB maps and at at least 6 grayscale maps, add a hair piece and add at least 2 RGB and 2 transmaps, add skirt, shoes and shirt and another 3 of each. So 2 clothed figures take at least 30 RGB maps and 22 grayscale maps. Add a few props and you run out of grayscale maps on a 64/32 GTX 580. And 2 figures with a few props is not a large scene by any means in Poser. When I was testing the GTX 580 I was unable to load 90% of my scenes without removing the bump maps

 

 

 Your 580 is a 1.5 GB of ram which is a very small amount, I gather 3 & 4 is more appropriate but does that extra 1Gig between the 580 3G & the 680 4G makes such a big difference?

 

A GTX580 has 64 RGB slots and 32 Grayscale slots and an additional GTX580 will double that (so 128 and 64). A texture connected to a diffuse channel takes a RGB slot and a texture connected to transmap/bumpmap will take a grayscale slot.>>

 

Is the information above the numbers for the GTX580 1.5GB or the GTX 580 3GB?

 

I ran out of texture slots before I ran out of memory. And you can reduce texture size, remapping props and figures is not as easy.

I gave you the limitation of using a GTX580, if you think that is not a problem in your case, then all is fine. I just want you to be aware of it before you buy your second video card