Um. People don't live here or nothing. I check the forums MAYBE one time a day. And not much on weekends, I'm usually out doing junk.

Anyway.

Use Map->Show Information and check Solids.

Why only 600 brushes? That's not going to make very much map...

There is a maximum of 512 brush-entities (entities made out of brushes) and 1024 entities total (including point-entities).

If you get even kind of close to those limits, though, you might crash.

Also, you are not supposed to go above 600-800 world polygons visible at a time while playing in your map. You can check this by using r_speeds in the console, type this:

r_speeds 1

This will show a display including wpolys. If you're wpolys get to high (i.e. over 1000) you should remove brush detail from your map, or break up large areas.

600 polygons at a time. 1 brush often equals several polygons.

There is no direct correlation from brushes->polygons.

Compiling converts all your brushes into polygons.

For a simple cube brush, you will probably get 6 polygons, one for each face.

But if it is a big cube or the texture on it repeats a lot, you can get 2,4,6,8,16 or more polygons per face.

If the cube is touching something, so that a face is totally touching the ground, or a wall, or any other brush, that face will not become a polygon. It will get thrown out.

If PART of a face is touching or intersected with another brush, it will be converted into polygons to fill just the visible part.

If you have really complicated, odd-angled brushes intersecting or touching or just floating there sometimes, a couple brushes can turn into many many polygons.

A polygon also can not span more than one "quadrant" so if a brush crosses one of the bluish lines in hammer, it will be converted into extra polygons. There are more invisible quadrants too, every 2048 units, I think.