"But I've also heard hints that heavy-duty PC gaming type cards aren't the best for 3D apps like Poser." This is true. I've got one machine with a Quadro4 750 XGL (pro) and one with a GeForce FX 5200 (game). The GeForce GREATLY outperforms the Quadro4. On my pro card machine Scree3D was actually faster than OpenGL.