I don't play games, either, nor do I have a GPU renderer.

My intent is to give Poser's Preview Window more VRAM to maintain smooth navigation when working with scenes with high poly counts.

For example, I recently bought this Loft Apartment.  The genius who created it made the whole thing and its contents one giant, non-adjustable Prop.  Navigation slows to a crawl when I venture inside, and is reduced to a virtual slide-show when I add V4 and M4 to the scene.  I'm hoping the extra VRAM will smooth things out again.