I used to run 4 D3 clients and 4 DBs that took up about 7.5gig of ram.
Judge from there.
Advanced Settings:
Now close Diablo 3, and go to your "My Documents" folder, and open the "Diablo 3" folder - in this folder you will see a file called "D3prefs.txt". Edit this WHILE DIABLO IS CLOSED.
Find these settings and change them to what I have listed below - these will make your graphics VERY VERY BAD!
DisplayModeBitDepth "16"
Vsync "0"
Antialiasing "0"
DisableTrilinearFiltering "1"
MipBias "2.000000"
HardwareClass "1"
will altering gfx settings and doing the *Advance Settings Fix*
lower the RAM usage? Don't know if the gfx settings will be related or not.