512x512 running pak64 is currently using 29MB physical memory, 51MB total
640x640 running pak128 - 94MB physical, 104MB total
384x384 running pak128.Britain - 82MB physical, 85MB total
459x771 running pak128 (moblet server) - 81MB physical, 103MB total
All of those are maps which have been running a couple weeks or so.