I say about 50,000 - that's what I get a good frame rate on my Radeon 9600 XT with antianalizing cranked up all the way (in the Catylst Control Center) , and I can get a good 50 fps with that, but with antianil off, i can get 800 fps (on the dragon demo)! lol...but if you are worried about a poly limit, you can use EntityAlpha mesh,0 or VertexAlpha# (curface, index) ...