On a GeForce 6800 gt, i have gotten well above 1 million. The trick is to not have many enties(with a small number of polys), but one entity(with many polys). I have a house with nearly 50000 polys. I duplicated it many many times and made a rectanlge block of houses. This also doesn't include and normalmapping or shaders. Don't focus on how many polys an engine can handle, focus on the artwork(including shaders). That's what makes a game look good. I've personally seen meshes that were skinned horribly, and had several hundred thousand polys, and they still looked like dirt.