MMmmmmm, I was sure I reponded to this, but Rendo eat my msg.

For textures number it's more complex. For exemple: V4, Marai from Surreality, UraalNys clothes from Awfulsoul, Midnight summer dream hair, path scene from vikike: 120 textures approx!! The only solution I found was 2 or 3 exports from Poser, geometry object node in octane, 2 or 3 renders and after postwork!

Whilst FX 4800 is listed as around $700, a $200 GTX 600 series card with double the cuda cores is about $200, and this should give you 256 rbg textures and 128 grayscale textures, which would fit the large scenes you are rendering.

Creator of PoserPhysics
Creator of OctaneRender for Poser
Blog
Facebook