ZBrushCentral

what settings should i use in the mem tab?

hi,
i’m running ZB4 on windows 7 64 bit, Intel Core 2 Quad CPU, 2.40 GHz, 4 GB of RAM.
what are the best settings for me to put in the mem tab?

3000 if you don’t have anything else running.

thanks!
what about the polygons per mesh?