This is what is typically shown in my ZBrush here

The Mem thing means Mem > PhysicalMem + VirtualMem, Free > AvailablePhysicalMem ?
If my interpretation is correct … I have 4GB RAM. Why doesn’t ZBrush use it? In Preferences>Mem>Auto Compact Mem I have the value 3150 (although it is always reset to 256 everytime I restart ZBrush, don’t know how to keep it at ~3150).
Thanks.
