Its my guess that the performance of a video card doesnt matter if you want to create or use 3D models. All the computing is done inside your cpu, not in the graphic card. These graphic cards are good for gamers, because new games just send vectors of objects to the card, which calculates lights and maps textures on it, fast enough for dozens of frames per second. The CPU itself doesnt know about the result of this operation. But if you are using poser for example, you want the CPU to calculate the whole image, because you want to save it afterwards. So 3D acceleration probably wont give you any advantage while rendering, it might speed up redrawing of windows and menus, but I doubt that this sppe gain will be noticeable. So save your money on the card, get more memory... (You cant have enough of this...)