dark basic poly count

first of all, your post didn't make any sense. But here's me trying to answer your question anyway:

I think you are referring here to the max polys that the darkbasic (http://darkbasic.thegamecreators.com) language can handle. Well that isn't a question that can be answered just like that. What I can tell you is that the max poly/vertex count for models used in Dark Basic is around 65536 - but you can split your models and join them in-game.

As for what it can run... well, that depends on your computer.