Hello, what are nowadays the maximum values for that parameters?

Are there special limits that should not be exceed?

Values to get sure, that there will be no problem with the game. I know it is not possible to use unlimited different models in one level because of memory consumption. Also for textures. But what should be the maximum value in kb for that things? Any idea?

memory kb:
nx nexus memory consumption (nexus)
m virtual memory allocation (sys_memory)
geo map surface video memory consumption
sha shadow map video memory consumption
ent models/sprites/sky video memory consumption
bmp bmap/font video memory consumption
v available video memory (can be inaccurate)